./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-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/egcd-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 e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 04:38:17,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 04:38:17,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 04:38:17,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 04:38:17,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 04:38:17,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 04:38:17,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 04:38:17,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 04:38:17,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 04:38:17,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 04:38:17,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 04:38:17,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 04:38:17,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 04:38:17,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 04:38:17,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 04:38:17,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 04:38:17,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 04:38:17,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 04:38:17,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 04:38:17,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 04:38:17,938 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 04:38:17,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 04:38:17,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 04:38:17,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 04:38:17,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 04:38:17,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 04:38:17,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 04:38:17,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 04:38:17,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 04:38:17,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 04:38:17,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 04:38:17,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 04:38:17,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 04:38:17,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 04:38:17,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 04:38:17,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 04:38:17,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 04:38:17,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 04:38:17,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 04:38:17,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 04:38:17,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 04:38:17,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 04:38:17,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 04:38:17,994 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 04:38:17,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 04:38:17,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 04:38:17,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 04:38:17,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 04:38:17,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 04:38:17,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 04:38:17,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 04:38:17,997 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 04:38:17,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 04:38:17,999 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 04:38:17,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 04:38:17,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 04:38:17,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 04:38:17,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 04:38:17,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 04:38:18,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 04:38:18,000 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 04:38:18,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 04:38:18,001 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 04:38:18,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 04:38:18,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 04:38:18,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 04:38:18,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 04:38:18,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:38:18,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 04:38:18,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 04:38:18,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 04:38:18,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 04:38:18,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 04:38:18,004 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 04:38:18,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 04:38:18,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 04:38:18,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 [2022-07-12 04:38:18,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 04:38:18,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 04:38:18,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 04:38:18,281 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 04:38:18,283 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 04:38:18,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2022-07-12 04:38:18,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80eb16781/e0dfaf35359049aabd625c650f4ddea9/FLAGa9296fce4 [2022-07-12 04:38:18,702 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 04:38:18,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2022-07-12 04:38:18,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80eb16781/e0dfaf35359049aabd625c650f4ddea9/FLAGa9296fce4 [2022-07-12 04:38:19,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80eb16781/e0dfaf35359049aabd625c650f4ddea9 [2022-07-12 04:38:19,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 04:38:19,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 04:38:19,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 04:38:19,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 04:38:19,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 04:38:19,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:38:19" (1/1) ... [2022-07-12 04:38:19,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ae5ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:38:19, skipping insertion in model container [2022-07-12 04:38:19,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:38:19" (1/1) ... [2022-07-12 04:38:19,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 04:38:19,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 04:38:19,273 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/egcd-ll_valuebound2.c[489,502] [2022-07-12 04:38:19,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:38:19,338 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 04:38:19,350 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/egcd-ll_valuebound2.c[489,502] [2022-07-12 04:38:19,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:38:19,372 INFO L208 MainTranslator]: Completed translation [2022-07-12 04:38:19,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:38:19 WrapperNode [2022-07-12 04:38:19,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 04:38:19,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 04:38:19,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 04:38:19,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 04:38:19,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:38:19" (1/1) ... [2022-07-12 04:38:19,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:38:19" (1/1) ... [2022-07-12 04:38:19,413 INFO L137 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-07-12 04:38:19,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 04:38:19,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 04:38:19,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 04:38:19,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 04:38:19,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:38:19" (1/1) ... [2022-07-12 04:38:19,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:38:19" (1/1) ... [2022-07-12 04:38:19,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:38:19" (1/1) ... [2022-07-12 04:38:19,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:38:19" (1/1) ... [2022-07-12 04:38:19,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:38:19" (1/1) ... [2022-07-12 04:38:19,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:38:19" (1/1) ... [2022-07-12 04:38:19,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:38:19" (1/1) ... [2022-07-12 04:38:19,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 04:38:19,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 04:38:19,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 04:38:19,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 04:38:19,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:38:19" (1/1) ... [2022-07-12 04:38:19,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:38:19,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:38:19,487 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 04:38:19,489 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 04:38:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 04:38:19,513 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 04:38:19,514 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 04:38:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 04:38:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 04:38:19,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 04:38:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 04:38:19,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 04:38:19,563 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 04:38:19,565 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 04:38:19,724 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 04:38:19,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 04:38:19,733 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 04:38:19,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:38:19 BoogieIcfgContainer [2022-07-12 04:38:19,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 04:38:19,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 04:38:19,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 04:38:19,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 04:38:19,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 04:38:19" (1/3) ... [2022-07-12 04:38:19,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c64f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:38:19, skipping insertion in model container [2022-07-12 04:38:19,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:38:19" (2/3) ... [2022-07-12 04:38:19,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c64f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:38:19, skipping insertion in model container [2022-07-12 04:38:19,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:38:19" (3/3) ... [2022-07-12 04:38:19,744 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.c [2022-07-12 04:38:19,758 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 04:38:19,758 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 04:38:19,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 04:38:19,834 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@2b27049d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@64914c79 [2022-07-12 04:38:19,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 04:38:19,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-12 04:38:19,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-12 04:38:19,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:38:19,850 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:38:19,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:38:19,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:38:19,861 INFO L85 PathProgramCache]: Analyzing trace with hash 516392259, now seen corresponding path program 1 times [2022-07-12 04:38:19,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:38:19,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316539233] [2022-07-12 04:38:19,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:19,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:38:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:38:20,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 04:38:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:38:20,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 04:38:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:38:20,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 04:38:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:38:20,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 04:38:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:38:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 04:38:20,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:38:20,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316539233] [2022-07-12 04:38:20,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316539233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:38:20,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:38:20,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 04:38:20,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99442215] [2022-07-12 04:38:20,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:38:20,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 04:38:20,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:38:20,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 04:38:20,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 04:38:20,072 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 04:38:20,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:38:20,097 INFO L93 Difference]: Finished difference Result 61 states and 99 transitions. [2022-07-12 04:38:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 04:38:20,099 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-07-12 04:38:20,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:38:20,107 INFO L225 Difference]: With dead ends: 61 [2022-07-12 04:38:20,108 INFO L226 Difference]: Without dead ends: 28 [2022-07-12 04:38:20,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 04:38:20,118 INFO L413 NwaCegarLoop]: 42 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, 42 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 04:38:20,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:38:20,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-12 04:38:20,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-07-12 04:38:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 04:38:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2022-07-12 04:38:20,151 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 29 [2022-07-12 04:38:20,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:38:20,153 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2022-07-12 04:38:20,153 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 04:38:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2022-07-12 04:38:20,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-12 04:38:20,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:38:20,155 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:38:20,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 04:38:20,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:38:20,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:38:20,156 INFO L85 PathProgramCache]: Analyzing trace with hash 501437177, now seen corresponding path program 1 times [2022-07-12 04:38:20,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:38:20,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280209551] [2022-07-12 04:38:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:20,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:38:20,173 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:38:20,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359797091] [2022-07-12 04:38:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:20,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:38:20,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:38:20,179 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 04:38:20,236 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 04:38:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:38:20,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 04:38:20,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:38:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 04:38:20,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:38:20,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:38:20,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280209551] [2022-07-12 04:38:20,453 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:38:20,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359797091] [2022-07-12 04:38:20,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359797091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:38:20,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:38:20,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:38:20,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852932676] [2022-07-12 04:38:20,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:38:20,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:38:20,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:38:20,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:38:20,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:38:20,456 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 04:38:20,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:38:20,524 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2022-07-12 04:38:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:38:20,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-07-12 04:38:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:38:20,525 INFO L225 Difference]: With dead ends: 44 [2022-07-12 04:38:20,525 INFO L226 Difference]: Without dead ends: 42 [2022-07-12 04:38:20,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 04:38:20,526 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:38:20,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 127 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:38:20,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-12 04:38:20,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-07-12 04:38:20,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-12 04:38:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2022-07-12 04:38:20,535 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 29 [2022-07-12 04:38:20,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:38:20,535 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2022-07-12 04:38:20,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 04:38:20,536 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2022-07-12 04:38:20,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 04:38:20,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:38:20,537 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:38:20,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 04:38:20,754 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 04:38:20,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:38:20,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:38:20,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1017640517, now seen corresponding path program 1 times [2022-07-12 04:38:20,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:38:20,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535563034] [2022-07-12 04:38:20,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:20,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:38:20,777 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:38:20,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168962307] [2022-07-12 04:38:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:20,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:38:20,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:38:20,779 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 04:38:20,814 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 04:38:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:38:20,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-12 04:38:20,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:38:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 04:38:21,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:38:21,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:38:21,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535563034] [2022-07-12 04:38:21,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:38:21,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168962307] [2022-07-12 04:38:21,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168962307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:38:21,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:38:21,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 04:38:21,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324747416] [2022-07-12 04:38:21,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:38:21,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 04:38:21,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:38:21,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 04:38:21,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-12 04:38:21,103 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-12 04:38:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:38:21,259 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2022-07-12 04:38:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 04:38:21,260 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 34 [2022-07-12 04:38:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:38:21,263 INFO L225 Difference]: With dead ends: 66 [2022-07-12 04:38:21,263 INFO L226 Difference]: Without dead ends: 64 [2022-07-12 04:38:21,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-12 04:38:21,264 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 31 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:38:21,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 149 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:38:21,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-12 04:38:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-07-12 04:38:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-12 04:38:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2022-07-12 04:38:21,291 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 34 [2022-07-12 04:38:21,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:38:21,291 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2022-07-12 04:38:21,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-12 04:38:21,292 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2022-07-12 04:38:21,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-12 04:38:21,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:38:21,293 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:38:21,316 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 04:38:21,498 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 04:38:21,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:38:21,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:38:21,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1133401081, now seen corresponding path program 1 times [2022-07-12 04:38:21,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:38:21,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060684238] [2022-07-12 04:38:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:21,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:38:21,514 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:38:21,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571033751] [2022-07-12 04:38:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:21,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:38:21,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:38:21,525 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 04:38:21,528 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 04:38:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:38:21,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-12 04:38:21,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:38:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 04:38:21,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:38:21,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:38:21,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060684238] [2022-07-12 04:38:21,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:38:21,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571033751] [2022-07-12 04:38:21,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571033751] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 04:38:21,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 04:38:21,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-07-12 04:38:21,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522979021] [2022-07-12 04:38:21,727 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 04:38:21,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 04:38:21,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:38:21,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 04:38:21,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 04:38:21,729 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 9 states, 8 states have (on average 2.125) 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), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-12 04:38:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:38:21,861 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2022-07-12 04:38:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 04:38:21,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) 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), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 39 [2022-07-12 04:38:21,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:38:21,863 INFO L225 Difference]: With dead ends: 64 [2022-07-12 04:38:21,863 INFO L226 Difference]: Without dead ends: 60 [2022-07-12 04:38:21,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-12 04:38:21,864 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 17 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:38:21,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 156 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:38:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-07-12 04:38:21,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-07-12 04:38:21,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-12 04:38:21,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2022-07-12 04:38:21,873 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 39 [2022-07-12 04:38:21,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:38:21,873 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2022-07-12 04:38:21,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) 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), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-12 04:38:21,873 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2022-07-12 04:38:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-12 04:38:21,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:38:21,874 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:38:21,894 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 04:38:22,080 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 04:38:22,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:38:22,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:38:22,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1954831506, now seen corresponding path program 1 times [2022-07-12 04:38:22,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:38:22,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666323816] [2022-07-12 04:38:22,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:22,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:38:22,094 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:38:22,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401487195] [2022-07-12 04:38:22,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:22,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:38:22,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:38:22,105 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 04:38:22,106 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 04:38:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:38:22,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 04:38:22,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:38:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 04:38:22,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:38:22,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:38:22,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666323816] [2022-07-12 04:38:22,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:38:22,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401487195] [2022-07-12 04:38:22,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401487195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:38:22,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:38:22,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:38:22,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605950983] [2022-07-12 04:38:22,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:38:22,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:38:22,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:38:22,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:38:22,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:38:22,155 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 04:38:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:38:22,181 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2022-07-12 04:38:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:38:22,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2022-07-12 04:38:22,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:38:22,183 INFO L225 Difference]: With dead ends: 66 [2022-07-12 04:38:22,183 INFO L226 Difference]: Without dead ends: 64 [2022-07-12 04:38:22,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 04:38:22,184 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:38:22,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:38:22,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-12 04:38:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-07-12 04:38:22,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-12 04:38:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2022-07-12 04:38:22,199 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 45 [2022-07-12 04:38:22,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:38:22,200 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2022-07-12 04:38:22,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 04:38:22,200 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2022-07-12 04:38:22,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-12 04:38:22,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:38:22,202 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:38:22,225 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 04:38:22,419 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 04:38:22,419 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:38:22,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:38:22,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1265228631, now seen corresponding path program 1 times [2022-07-12 04:38:22,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:38:22,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643088117] [2022-07-12 04:38:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:22,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:38:22,429 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:38:22,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223178988] [2022-07-12 04:38:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:22,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:38:22,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:38:22,431 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 04:38:22,432 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 04:38:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:38:22,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 04:38:22,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:38:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 04:38:22,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:38:22,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:38:22,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643088117] [2022-07-12 04:38:22,536 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:38:22,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223178988] [2022-07-12 04:38:22,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223178988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:38:22,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:38:22,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:38:22,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711215909] [2022-07-12 04:38:22,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:38:22,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:38:22,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:38:22,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:38:22,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:38:22,554 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 04:38:22,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:38:22,594 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2022-07-12 04:38:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:38:22,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-07-12 04:38:22,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:38:22,597 INFO L225 Difference]: With dead ends: 80 [2022-07-12 04:38:22,598 INFO L226 Difference]: Without dead ends: 78 [2022-07-12 04:38:22,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 04:38:22,601 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:38:22,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 127 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:38:22,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-12 04:38:22,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2022-07-12 04:38:22,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-12 04:38:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2022-07-12 04:38:22,624 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 47 [2022-07-12 04:38:22,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:38:22,624 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2022-07-12 04:38:22,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 04:38:22,625 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2022-07-12 04:38:22,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-12 04:38:22,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:38:22,628 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:38:22,658 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 04:38:22,837 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 04:38:22,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:38:22,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:38:22,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1617953190, now seen corresponding path program 1 times [2022-07-12 04:38:22,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:38:22,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786196537] [2022-07-12 04:38:22,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:22,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:38:22,846 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:38:22,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158492156] [2022-07-12 04:38:22,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:22,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:38:22,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:38:22,848 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 04:38:22,849 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 04:38:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:38:22,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 04:38:22,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:38:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-12 04:38:22,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:38:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-12 04:38:22,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:38:22,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786196537] [2022-07-12 04:38:22,985 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:38:22,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158492156] [2022-07-12 04:38:22,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158492156] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:38:22,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:38:22,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-07-12 04:38:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78043932] [2022-07-12 04:38:22,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:38:22,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 04:38:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:38:22,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 04:38:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 04:38:22,987 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 04:38:23,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:38:23,095 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2022-07-12 04:38:23,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 04:38:23,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2022-07-12 04:38:23,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:38:23,098 INFO L225 Difference]: With dead ends: 84 [2022-07-12 04:38:23,098 INFO L226 Difference]: Without dead ends: 80 [2022-07-12 04:38:23,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-12 04:38:23,099 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 13 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:38:23,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 122 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:38:23,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-12 04:38:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-07-12 04:38:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-12 04:38:23,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2022-07-12 04:38:23,107 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 50 [2022-07-12 04:38:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:38:23,107 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2022-07-12 04:38:23,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 04:38:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2022-07-12 04:38:23,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 04:38:23,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:38:23,108 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:38:23,127 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 04:38:23,308 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 04:38:23,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:38:23,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:38:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash 860577929, now seen corresponding path program 1 times [2022-07-12 04:38:23,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:38:23,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856729366] [2022-07-12 04:38:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:23,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:38:23,317 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:38:23,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784539710] [2022-07-12 04:38:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:23,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:38:23,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:38:23,318 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 04:38:23,319 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 04:38:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:38:23,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-12 04:38:23,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:38:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 04:38:23,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:38:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 04:38:23,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:38:23,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856729366] [2022-07-12 04:38:23,753 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:38:23,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784539710] [2022-07-12 04:38:23,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784539710] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:38:23,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:38:23,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2022-07-12 04:38:23,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219697425] [2022-07-12 04:38:23,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:38:23,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 04:38:23,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:38:23,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 04:38:23,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-07-12 04:38:23,756 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-12 04:38:24,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:38:24,204 INFO L93 Difference]: Finished difference Result 115 states and 149 transitions. [2022-07-12 04:38:24,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 04:38:24,205 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) Word has length 52 [2022-07-12 04:38:24,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:38:24,206 INFO L225 Difference]: With dead ends: 115 [2022-07-12 04:38:24,206 INFO L226 Difference]: Without dead ends: 113 [2022-07-12 04:38:24,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-07-12 04:38:24,207 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 58 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 04:38:24,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 96 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 04:38:24,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-07-12 04:38:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2022-07-12 04:38:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 57 states have internal predecessors, (61), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-12 04:38:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2022-07-12 04:38:24,218 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 52 [2022-07-12 04:38:24,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:38:24,219 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2022-07-12 04:38:24,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-12 04:38:24,219 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2022-07-12 04:38:24,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-12 04:38:24,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:38:24,220 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:38:24,237 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 04:38:24,437 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 04:38:24,438 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:38:24,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:38:24,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1226126935, now seen corresponding path program 2 times [2022-07-12 04:38:24,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:38:24,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111720512] [2022-07-12 04:38:24,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:24,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:38:24,446 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:38:24,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240065460] [2022-07-12 04:38:24,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 04:38:24,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:38:24,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:38:24,448 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 04:38:24,449 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 04:38:24,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 04:38:24,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 04:38:24,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-12 04:38:24,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:38:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 04:38:24,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:38:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-12 04:38:25,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:38:25,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111720512] [2022-07-12 04:38:25,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:38:25,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240065460] [2022-07-12 04:38:25,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240065460] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:38:25,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:38:25,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 19 [2022-07-12 04:38:25,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779464831] [2022-07-12 04:38:25,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:38:25,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 04:38:25,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:38:25,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 04:38:25,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-07-12 04:38:25,026 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand has 19 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) [2022-07-12 04:38:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:38:25,625 INFO L93 Difference]: Finished difference Result 160 states and 185 transitions. [2022-07-12 04:38:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 04:38:25,626 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) Word has length 57 [2022-07-12 04:38:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:38:25,627 INFO L225 Difference]: With dead ends: 160 [2022-07-12 04:38:25,627 INFO L226 Difference]: Without dead ends: 82 [2022-07-12 04:38:25,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-07-12 04:38:25,628 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 04:38:25,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 95 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 04:38:25,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-07-12 04:38:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-07-12 04:38:25,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 53 states have internal predecessors, (55), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-12 04:38:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2022-07-12 04:38:25,637 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 57 [2022-07-12 04:38:25,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:38:25,637 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2022-07-12 04:38:25,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) [2022-07-12 04:38:25,638 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2022-07-12 04:38:25,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 04:38:25,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:38:25,639 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:38:25,677 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 04:38:25,851 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 04:38:25,852 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:38:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:38:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1236716699, now seen corresponding path program 1 times [2022-07-12 04:38:25,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:38:25,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277673605] [2022-07-12 04:38:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:25,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:38:25,860 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:38:25,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658795785] [2022-07-12 04:38:25,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:38:25,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:38:25,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:38:25,862 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 04:38:25,866 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 04:38:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:38:25,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 04:38:25,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:38:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-12 04:38:25,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:38:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-12 04:38:26,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:38:26,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277673605] [2022-07-12 04:38:26,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:38:26,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658795785] [2022-07-12 04:38:26,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658795785] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:38:26,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:38:26,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-07-12 04:38:26,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543768268] [2022-07-12 04:38:26,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:38:26,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 04:38:26,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:38:26,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 04:38:26,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-12 04:38:26,081 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 5 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-12 04:38:26,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:38:26,184 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2022-07-12 04:38:26,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 04:38:26,184 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 5 states have call predecessors, (17), 6 states have call successors, (17) Word has length 65 [2022-07-12 04:38:26,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:38:26,185 INFO L225 Difference]: With dead ends: 86 [2022-07-12 04:38:26,185 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 04:38:26,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-12 04:38:26,187 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:38:26,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:38:26,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 04:38:26,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 04:38:26,188 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 04:38:26,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 04:38:26,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2022-07-12 04:38:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:38:26,188 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 04:38:26,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 5 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-12 04:38:26,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 04:38:26,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 04:38:26,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 04:38:26,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 04:38:26,408 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 04:38:26,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 04:38:28,138 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= (+ (* |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|)) (.cse3 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and (<= |ULTIMATE.start_main_~y~0#1| 2) (not (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) .cse1 .cse2 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1) .cse3) (and (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2) .cse3))) [2022-07-12 04:38:28,139 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 04:38:28,139 INFO L902 garLoopResultBuilder]: At program point L58(lines 18 59) the Hoare annotation is: true [2022-07-12 04:38:28,139 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 04:38:28,139 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 (= |ULTIMATE.start_main_~s~0#1| 1)) (and .cse0 .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|)) |ULTIMATE.start_main_~b~0#1|) .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~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|) .cse3))) [2022-07-12 04:38:28,139 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= (+ (* |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|)) (.cse3 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and (<= |ULTIMATE.start_main_~y~0#1| 2) (not (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) .cse1 .cse2 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1) .cse3) (and (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2) .cse3))) [2022-07-12 04:38:28,139 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2022-07-12 04:38:28,139 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= (+ (* |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|)) (.cse8 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) .cse0 (not (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse3 (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse5 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) .cse6 .cse7 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1)) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 (< |ULTIMATE.start_main_~b~0#1| 2) .cse2 .cse4 (< 0 |ULTIMATE.start_main_~a~0#1|) .cse5 .cse7 .cse8 .cse9))) [2022-07-12 04:38:28,139 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= (+ (* |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|)) (.cse8 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) .cse0 (not (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse3 (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse5 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) .cse6 .cse7 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1)) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 (< |ULTIMATE.start_main_~b~0#1| 2) .cse2 .cse4 (< 0 |ULTIMATE.start_main_~a~0#1|) .cse5 .cse7 .cse8 .cse9))) [2022-07-12 04:38:28,139 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 04:38:28,139 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 04:38:28,139 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 04:38:28,139 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-07-12 04:38:28,139 INFO L899 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2022-07-12 04:38:28,139 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 04:38:28,139 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 04:38:28,139 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse2 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 (<= |ULTIMATE.start_main_~x~0#1| 2) .cse2) (and .cse0 (not (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~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|) (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1) .cse2))) [2022-07-12 04:38:28,139 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-07-12 04:38:28,139 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-07-12 04:38:28,140 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2022-07-12 04:38:28,140 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= (+ (* |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|)) (.cse8 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) .cse0 (not (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse3 (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse5 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) .cse6 .cse7 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1)) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 (< |ULTIMATE.start_main_~b~0#1| 2) .cse2 .cse4 (< 0 |ULTIMATE.start_main_~a~0#1|) .cse5 .cse7 .cse8 .cse9))) [2022-07-12 04:38:28,140 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse4 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse6 (= (+ (* |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|)) (.cse7 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) .cse0 (not (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse2 (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) .cse5 .cse6 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1)) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 (< |ULTIMATE.start_main_~b~0#1| 2) (= (+ (* |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|) .cse3 (< 0 |ULTIMATE.start_main_~a~0#1|) .cse4 .cse6 .cse7 .cse8))) [2022-07-12 04:38:28,140 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-07-12 04:38:28,140 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-07-12 04:38:28,140 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-07-12 04:38:28,140 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-07-12 04:38:28,140 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-07-12 04:38:28,140 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-07-12 04:38:28,140 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-07-12 04:38:28,140 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-07-12 04:38:28,140 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-07-12 04:38:28,140 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-07-12 04:38:28,142 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:38:28,144 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 04:38:28,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 04:38:28 BoogieIcfgContainer [2022-07-12 04:38:28,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 04:38:28,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 04:38:28,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 04:38:28,164 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 04:38:28,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:38:19" (3/4) ... [2022-07-12 04:38:28,166 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 04:38:28,171 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-12 04:38:28,171 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-12 04:38:28,175 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-12 04:38:28,175 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-12 04:38:28,176 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 04:38:28,176 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 04:38:28,208 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 04:38:28,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 04:38:28,209 INFO L158 Benchmark]: Toolchain (without parser) took 9096.64ms. Allocated memory was 119.5MB in the beginning and 195.0MB in the end (delta: 75.5MB). Free memory was 95.5MB in the beginning and 96.9MB in the end (delta: -1.4MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. [2022-07-12 04:38:28,209 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 119.5MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:38:28,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.44ms. Allocated memory is still 119.5MB. Free memory was 95.3MB in the beginning and 95.5MB in the end (delta: -157.0kB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2022-07-12 04:38:28,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.98ms. Allocated memory is still 119.5MB. Free memory was 95.5MB in the beginning and 93.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:38:28,210 INFO L158 Benchmark]: Boogie Preprocessor took 30.28ms. Allocated memory is still 119.5MB. Free memory was 93.9MB in the beginning and 93.0MB in the end (delta: 910.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 04:38:28,210 INFO L158 Benchmark]: RCFGBuilder took 290.09ms. Allocated memory is still 119.5MB. Free memory was 92.8MB in the beginning and 82.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 04:38:28,211 INFO L158 Benchmark]: TraceAbstraction took 8426.36ms. Allocated memory was 119.5MB in the beginning and 195.0MB in the end (delta: 75.5MB). Free memory was 82.5MB in the beginning and 99.0MB in the end (delta: -16.5MB). Peak memory consumption was 80.5MB. Max. memory is 16.1GB. [2022-07-12 04:38:28,211 INFO L158 Benchmark]: Witness Printer took 44.64ms. Allocated memory is still 195.0MB. Free memory was 99.0MB in the beginning and 96.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:38:28,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 119.5MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.44ms. Allocated memory is still 119.5MB. Free memory was 95.3MB in the beginning and 95.5MB in the end (delta: -157.0kB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.98ms. Allocated memory is still 119.5MB. Free memory was 95.5MB in the beginning and 93.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.28ms. Allocated memory is still 119.5MB. Free memory was 93.9MB in the beginning and 93.0MB in the end (delta: 910.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 290.09ms. Allocated memory is still 119.5MB. Free memory was 92.8MB in the beginning and 82.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8426.36ms. Allocated memory was 119.5MB in the beginning and 195.0MB in the end (delta: 75.5MB). Free memory was 82.5MB in the beginning and 99.0MB in the end (delta: -16.5MB). Peak memory consumption was 80.5MB. Max. memory is 16.1GB. * Witness Printer took 44.64ms. Allocated memory is still 195.0MB. Free memory was 99.0MB in the beginning and 96.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.3s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 236 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 189 mSDsluCounter, 1148 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 825 mSDsCounter, 248 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1480 IncrementalHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 248 mSolverCounterUnsat, 323 mSDtfsCounter, 1480 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 672 GetRequests, 566 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=8, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 32 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 68 PreInvPairs, 93 NumberOfFragments, 798 HoareAnnotationTreeSize, 68 FomulaSimplifications, 222 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 1996 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 447 NumberOfCodeBlocks, 447 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 657 ConstructedInterpolants, 0 QuantifiedInterpolants, 2348 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1102 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 706/790 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: 35]: Loop Invariant Derived loop invariant: ((((((((((y <= 2 && 1 <= y) && b == y) && r == 0) && q == 0) && 1 <= x) && a == x) && r * y + p * x == a) && x <= 2) && s == 1) || (((((((((y == a + b && y <= 2) && !(a == y)) && r == 0) && a <= y) && 1 <= x) && p + q == 0) && a == x) && r * y + p * x == a) && r + s == 1)) || (((((((((p == 1 && 1 <= y) && b < 2) && b == y) && q == 0) && 0 < a) && 1 <= x) && r * y + p * x == a) && x <= 2) && s == 1) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-12 04:38:28,241 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