./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 20:45:32,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 20:45:32,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 20:45:32,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 20:45:32,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 20:45:32,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 20:45:32,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 20:45:32,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 20:45:32,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 20:45:32,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 20:45:32,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 20:45:32,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 20:45:32,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 20:45:32,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 20:45:32,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 20:45:32,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 20:45:32,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 20:45:32,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 20:45:32,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 20:45:32,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 20:45:32,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 20:45:32,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 20:45:32,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 20:45:32,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 20:45:32,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 20:45:32,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 20:45:32,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 20:45:32,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 20:45:32,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 20:45:32,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 20:45:32,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 20:45:32,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 20:45:32,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 20:45:32,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 20:45:32,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 20:45:32,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 20:45:32,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 20:45:32,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 20:45:32,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 20:45:32,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 20:45:32,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 20:45:32,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 20:45:32,947 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 20:45:32,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 20:45:32,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 20:45:32,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 20:45:32,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 20:45:32,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 20:45:32,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 20:45:32,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 20:45:32,949 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 20:45:32,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 20:45:32,950 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 20:45:32,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 20:45:32,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 20:45:32,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 20:45:32,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 20:45:32,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 20:45:32,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 20:45:32,951 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 20:45:32,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 20:45:32,951 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 20:45:32,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 20:45:32,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 20:45:32,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 20:45:32,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 20:45:32,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:45:32,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 20:45:32,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 20:45:32,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 20:45:32,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 20:45:32,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 20:45:32,953 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 20:45:32,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 20:45:32,954 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 20:45:32,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 20:45:32,954 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 20:45:32,954 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f [2023-02-15 20:45:33,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 20:45:33,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 20:45:33,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 20:45:33,163 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 20:45:33,163 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 20:45:33,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2023-02-15 20:45:34,255 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 20:45:34,397 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 20:45:34,398 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2023-02-15 20:45:34,402 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159edf4d4/54421529218e466994142c761e0f91d2/FLAG2595f3568 [2023-02-15 20:45:34,411 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159edf4d4/54421529218e466994142c761e0f91d2 [2023-02-15 20:45:34,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 20:45:34,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 20:45:34,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 20:45:34,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 20:45:34,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 20:45:34,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:45:34" (1/1) ... [2023-02-15 20:45:34,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9ca315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34, skipping insertion in model container [2023-02-15 20:45:34,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:45:34" (1/1) ... [2023-02-15 20:45:34,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 20:45:34,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 20:45:34,525 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2023-02-15 20:45:34,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:45:34,544 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 20:45:34,551 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2023-02-15 20:45:34,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:45:34,582 INFO L208 MainTranslator]: Completed translation [2023-02-15 20:45:34,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34 WrapperNode [2023-02-15 20:45:34,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 20:45:34,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 20:45:34,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 20:45:34,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 20:45:34,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34" (1/1) ... [2023-02-15 20:45:34,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34" (1/1) ... [2023-02-15 20:45:34,612 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2023-02-15 20:45:34,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 20:45:34,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 20:45:34,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 20:45:34,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 20:45:34,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34" (1/1) ... [2023-02-15 20:45:34,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34" (1/1) ... [2023-02-15 20:45:34,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34" (1/1) ... [2023-02-15 20:45:34,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34" (1/1) ... [2023-02-15 20:45:34,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34" (1/1) ... [2023-02-15 20:45:34,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34" (1/1) ... [2023-02-15 20:45:34,645 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34" (1/1) ... [2023-02-15 20:45:34,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34" (1/1) ... [2023-02-15 20:45:34,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 20:45:34,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 20:45:34,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 20:45:34,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 20:45:34,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34" (1/1) ... [2023-02-15 20:45:34,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:45:34,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:45:34,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 20:45:34,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 20:45:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 20:45:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 20:45:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 20:45:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 20:45:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 20:45:34,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 20:45:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 20:45:34,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 20:45:34,762 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 20:45:34,763 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 20:45:34,870 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 20:45:34,875 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 20:45:34,875 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 20:45:34,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:45:34 BoogieIcfgContainer [2023-02-15 20:45:34,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 20:45:34,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 20:45:34,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 20:45:34,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 20:45:34,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 08:45:34" (1/3) ... [2023-02-15 20:45:34,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6901452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:45:34, skipping insertion in model container [2023-02-15 20:45:34,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:45:34" (2/3) ... [2023-02-15 20:45:34,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6901452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:45:34, skipping insertion in model container [2023-02-15 20:45:34,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:45:34" (3/3) ... [2023-02-15 20:45:34,889 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound1.c [2023-02-15 20:45:34,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 20:45:34,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 20:45:34,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 20:45:34,957 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@421f0d40, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 20:45:34,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 20:45:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 20:45:34,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 20:45:34,967 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:45:34,968 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:45:34,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:45:34,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:45:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2023-02-15 20:45:34,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:45:34,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164590479] [2023-02-15 20:45:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:34,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:45:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:45:35,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:45:35,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164590479] [2023-02-15 20:45:35,090 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 20:45:35,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119429598] [2023-02-15 20:45:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:35,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:35,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:45:35,106 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:45:35,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 20:45:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:45:35,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 20:45:35,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:45:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-15 20:45:35,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:45:35,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119429598] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:45:35,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:45:35,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 20:45:35,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035461501] [2023-02-15 20:45:35,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:45:35,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 20:45:35,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:45:35,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 20:45:35,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:45:35,233 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 20:45:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:45:35,250 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2023-02-15 20:45:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 20:45:35,252 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-02-15 20:45:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:45:35,263 INFO L225 Difference]: With dead ends: 67 [2023-02-15 20:45:35,263 INFO L226 Difference]: Without dead ends: 31 [2023-02-15 20:45:35,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:45:35,269 INFO L413 NwaCegarLoop]: 44 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, 44 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 [2023-02-15 20:45:35,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:45:35,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-15 20:45:35,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-15 20:45:35,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 20:45:35,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-02-15 20:45:35,299 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2023-02-15 20:45:35,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:45:35,299 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-02-15 20:45:35,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 20:45:35,299 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-02-15 20:45:35,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 20:45:35,301 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:45:35,301 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, 1] [2023-02-15 20:45:35,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 20:45:35,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 20:45:35,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:45:35,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:45:35,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2023-02-15 20:45:35,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:45:35,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169209141] [2023-02-15 20:45:35,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:35,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:45:35,525 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:45:35,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170478322] [2023-02-15 20:45:35,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:35,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:35,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:45:35,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:45:35,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 20:45:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:45:35,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 20:45:35,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:45:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 20:45:35,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:45:35,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:45:35,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169209141] [2023-02-15 20:45:35,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:45:35,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170478322] [2023-02-15 20:45:35,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170478322] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:45:35,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:45:35,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 20:45:35,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082323535] [2023-02-15 20:45:35,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:45:35,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 20:45:35,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:45:35,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 20:45:35,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 20:45:35,649 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:45:35,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:45:35,798 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2023-02-15 20:45:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:45:35,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2023-02-15 20:45:35,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:45:35,800 INFO L225 Difference]: With dead ends: 50 [2023-02-15 20:45:35,800 INFO L226 Difference]: Without dead ends: 43 [2023-02-15 20:45:35,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-15 20:45:35,801 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:45:35,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 113 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:45:35,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-15 20:45:35,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2023-02-15 20:45:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 20:45:35,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2023-02-15 20:45:35,819 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2023-02-15 20:45:35,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:45:35,819 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2023-02-15 20:45:35,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:45:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2023-02-15 20:45:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 20:45:35,821 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:45:35,821 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, 1, 1, 1, 1] [2023-02-15 20:45:35,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 20:45:36,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-15 20:45:36,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:45:36,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:45:36,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2023-02-15 20:45:36,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:45:36,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911445181] [2023-02-15 20:45:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:36,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:45:36,039 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:45:36,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767010548] [2023-02-15 20:45:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:36,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:36,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:45:36,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:45:36,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 20:45:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:45:36,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-15 20:45:36,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:45:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 20:45:36,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:45:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:45:36,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:45:36,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911445181] [2023-02-15 20:45:36,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:45:36,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767010548] [2023-02-15 20:45:36,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767010548] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:45:36,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:45:36,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-02-15 20:45:36,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177323229] [2023-02-15 20:45:36,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:45:36,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 20:45:36,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:45:36,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 20:45:36,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-02-15 20:45:36,435 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:45:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:45:36,506 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-02-15 20:45:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 20:45:36,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 33 [2023-02-15 20:45:36,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:45:36,508 INFO L225 Difference]: With dead ends: 49 [2023-02-15 20:45:36,508 INFO L226 Difference]: Without dead ends: 47 [2023-02-15 20:45:36,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-02-15 20:45:36,509 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:45:36,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 147 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:45:36,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-15 20:45:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-02-15 20:45:36,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-15 20:45:36,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2023-02-15 20:45:36,517 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2023-02-15 20:45:36,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:45:36,517 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2023-02-15 20:45:36,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:45:36,518 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2023-02-15 20:45:36,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-15 20:45:36,518 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:45:36,519 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, 1] [2023-02-15 20:45:36,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 20:45:36,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:36,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:45:36,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:45:36,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2023-02-15 20:45:36,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:45:36,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132471977] [2023-02-15 20:45:36,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:36,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:45:36,754 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:45:36,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384964770] [2023-02-15 20:45:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:36,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:36,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:45:36,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:45:36,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 20:45:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:45:36,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 20:45:36,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:45:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 20:45:36,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:45:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 20:45:36,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:45:36,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132471977] [2023-02-15 20:45:36,899 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:45:36,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384964770] [2023-02-15 20:45:36,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384964770] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:45:36,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:45:36,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-02-15 20:45:36,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858195661] [2023-02-15 20:45:36,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:45:36,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 20:45:36,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:45:36,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 20:45:36,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-15 20:45:36,901 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 20:45:37,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:45:37,033 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2023-02-15 20:45:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 20:45:37,034 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2023-02-15 20:45:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:45:37,035 INFO L225 Difference]: With dead ends: 99 [2023-02-15 20:45:37,035 INFO L226 Difference]: Without dead ends: 92 [2023-02-15 20:45:37,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:45:37,036 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 61 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:45:37,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 209 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:45:37,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-02-15 20:45:37,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2023-02-15 20:45:37,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-15 20:45:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2023-02-15 20:45:37,047 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 35 [2023-02-15 20:45:37,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:45:37,048 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2023-02-15 20:45:37,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 20:45:37,048 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2023-02-15 20:45:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 20:45:37,049 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:45:37,049 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, 1, 1, 1, 1] [2023-02-15 20:45:37,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 20:45:37,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:37,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:45:37,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:45:37,257 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2023-02-15 20:45:37,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:45:37,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279086080] [2023-02-15 20:45:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:37,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:45:37,270 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:45:37,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461031972] [2023-02-15 20:45:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:37,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:37,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:45:37,281 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:45:37,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 20:45:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:45:37,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-15 20:45:37,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:45:37,539 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 20:45:37,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:45:37,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:45:37,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279086080] [2023-02-15 20:45:37,607 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:45:37,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461031972] [2023-02-15 20:45:37,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461031972] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 20:45:37,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:45:37,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-02-15 20:45:37,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803363467] [2023-02-15 20:45:37,607 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 20:45:37,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 20:45:37,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:45:37,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 20:45:37,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-02-15 20:45:37,609 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-15 20:45:37,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:45:37,836 INFO L93 Difference]: Finished difference Result 82 states and 110 transitions. [2023-02-15 20:45:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 20:45:37,836 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2023-02-15 20:45:37,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:45:37,837 INFO L225 Difference]: With dead ends: 82 [2023-02-15 20:45:37,837 INFO L226 Difference]: Without dead ends: 80 [2023-02-15 20:45:37,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2023-02-15 20:45:37,838 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 57 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 20:45:37,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 135 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 20:45:37,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-15 20:45:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2023-02-15 20:45:37,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 50 states have internal predecessors, (61), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-15 20:45:37,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2023-02-15 20:45:37,848 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 38 [2023-02-15 20:45:37,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:45:37,848 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2023-02-15 20:45:37,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-15 20:45:37,849 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2023-02-15 20:45:37,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 20:45:37,849 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:45:37,849 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:45:37,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 20:45:38,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:38,054 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:45:38,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:45:38,055 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2023-02-15 20:45:38,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:45:38,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789892890] [2023-02-15 20:45:38,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:38,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:45:38,067 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:45:38,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776672768] [2023-02-15 20:45:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:38,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:38,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:45:38,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:45:38,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 20:45:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:45:38,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 20:45:38,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:45:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 20:45:38,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:45:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 20:45:38,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:45:38,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789892890] [2023-02-15 20:45:38,361 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:45:38,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776672768] [2023-02-15 20:45:38,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776672768] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:45:38,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:45:38,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2023-02-15 20:45:38,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027314036] [2023-02-15 20:45:38,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:45:38,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 20:45:38,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:45:38,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 20:45:38,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-02-15 20:45:38,363 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-02-15 20:45:38,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:45:38,656 INFO L93 Difference]: Finished difference Result 101 states and 135 transitions. [2023-02-15 20:45:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 20:45:38,656 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 38 [2023-02-15 20:45:38,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:45:38,657 INFO L225 Difference]: With dead ends: 101 [2023-02-15 20:45:38,657 INFO L226 Difference]: Without dead ends: 60 [2023-02-15 20:45:38,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2023-02-15 20:45:38,658 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 131 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:45:38,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 170 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:45:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-15 20:45:38,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2023-02-15 20:45:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 states have internal predecessors, (40), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-15 20:45:38,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2023-02-15 20:45:38,671 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 38 [2023-02-15 20:45:38,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:45:38,671 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2023-02-15 20:45:38,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-02-15 20:45:38,673 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-02-15 20:45:38,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 20:45:38,674 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:45:38,674 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, 1, 1, 1, 1] [2023-02-15 20:45:38,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 20:45:38,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:38,879 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:45:38,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:45:38,880 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2023-02-15 20:45:38,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:45:38,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396399841] [2023-02-15 20:45:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:38,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:45:38,896 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:45:38,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219220229] [2023-02-15 20:45:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:38,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:38,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:45:38,899 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:45:38,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 20:45:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:45:38,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-15 20:45:38,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:45:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 20:45:39,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:45:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-15 20:45:39,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:45:39,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396399841] [2023-02-15 20:45:39,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:45:39,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219220229] [2023-02-15 20:45:39,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219220229] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:45:39,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:45:39,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2023-02-15 20:45:39,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713206031] [2023-02-15 20:45:39,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:45:39,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:45:39,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:45:39,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:45:39,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:45:39,195 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 20:45:39,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:45:39,250 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2023-02-15 20:45:39,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:45:39,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2023-02-15 20:45:39,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:45:39,252 INFO L225 Difference]: With dead ends: 75 [2023-02-15 20:45:39,252 INFO L226 Difference]: Without dead ends: 73 [2023-02-15 20:45:39,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-02-15 20:45:39,253 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:45:39,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 130 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:45:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-15 20:45:39,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2023-02-15 20:45:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 44 states have internal predecessors, (52), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-15 20:45:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2023-02-15 20:45:39,265 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 43 [2023-02-15 20:45:39,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:45:39,265 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2023-02-15 20:45:39,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 20:45:39,265 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2023-02-15 20:45:39,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-15 20:45:39,266 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:45:39,266 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, 1, 1, 1] [2023-02-15 20:45:39,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 20:45:39,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:39,472 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:45:39,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:45:39,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1189241395, now seen corresponding path program 1 times [2023-02-15 20:45:39,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:45:39,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321998654] [2023-02-15 20:45:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:39,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:45:39,481 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:45:39,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458622826] [2023-02-15 20:45:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:39,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:39,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:45:39,483 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:45:39,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 20:45:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:45:39,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-15 20:45:39,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:45:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-15 20:45:39,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:45:39,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:45:39,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321998654] [2023-02-15 20:45:39,735 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:45:39,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458622826] [2023-02-15 20:45:39,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458622826] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 20:45:39,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:45:39,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-02-15 20:45:39,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083759106] [2023-02-15 20:45:39,736 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 20:45:39,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 20:45:39,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:45:39,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 20:45:39,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-02-15 20:45:39,737 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-15 20:45:39,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:45:39,952 INFO L93 Difference]: Finished difference Result 129 states and 172 transitions. [2023-02-15 20:45:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 20:45:39,953 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 48 [2023-02-15 20:45:39,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:45:39,954 INFO L225 Difference]: With dead ends: 129 [2023-02-15 20:45:39,954 INFO L226 Difference]: Without dead ends: 75 [2023-02-15 20:45:39,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2023-02-15 20:45:39,956 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 43 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:45:39,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 145 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:45:39,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-15 20:45:39,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2023-02-15 20:45:39,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 47 states have internal predecessors, (52), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-02-15 20:45:39,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2023-02-15 20:45:39,977 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 48 [2023-02-15 20:45:39,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:45:39,977 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2023-02-15 20:45:39,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-15 20:45:39,978 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2023-02-15 20:45:39,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-15 20:45:39,978 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:45:39,978 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:45:39,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 20:45:40,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-15 20:45:40,183 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:45:40,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:45:40,184 INFO L85 PathProgramCache]: Analyzing trace with hash -828341661, now seen corresponding path program 1 times [2023-02-15 20:45:40,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:45:40,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856923984] [2023-02-15 20:45:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:40,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:45:40,191 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:45:40,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724833566] [2023-02-15 20:45:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:40,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:40,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:45:40,203 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) [2023-02-15 20:45:40,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 20:45:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:45:40,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 55 conjunts are in the unsatisfiable core [2023-02-15 20:45:40,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:45:40,753 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-02-15 20:45:40,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:45:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-15 20:45:41,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:45:41,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856923984] [2023-02-15 20:45:41,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:45:41,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724833566] [2023-02-15 20:45:41,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724833566] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:45:41,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:45:41,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 27 [2023-02-15 20:45:41,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105646658] [2023-02-15 20:45:41,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:45:41,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-15 20:45:41,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:45:41,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-15 20:45:41,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2023-02-15 20:45:41,241 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 27 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 24 states have internal predecessors, (51), 9 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2023-02-15 20:45:51,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 20:45:52,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 20:45:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:45:53,843 INFO L93 Difference]: Finished difference Result 214 states and 306 transitions. [2023-02-15 20:45:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-15 20:45:53,843 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 24 states have internal predecessors, (51), 9 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) Word has length 60 [2023-02-15 20:45:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:45:53,845 INFO L225 Difference]: With dead ends: 214 [2023-02-15 20:45:53,845 INFO L226 Difference]: Without dead ends: 181 [2023-02-15 20:45:53,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=440, Invalid=2212, Unknown=0, NotChecked=0, Total=2652 [2023-02-15 20:45:53,847 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 214 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 260 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-02-15 20:45:53,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 266 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1132 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2023-02-15 20:45:53,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-02-15 20:45:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 142. [2023-02-15 20:45:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 89 states have internal predecessors, (106), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-02-15 20:45:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 198 transitions. [2023-02-15 20:45:53,888 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 198 transitions. Word has length 60 [2023-02-15 20:45:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:45:53,889 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 198 transitions. [2023-02-15 20:45:53,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 24 states have internal predecessors, (51), 9 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2023-02-15 20:45:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 198 transitions. [2023-02-15 20:45:53,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-02-15 20:45:53,905 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:45:53,905 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:45:53,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-15 20:45:54,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:54,110 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:45:54,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:45:54,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2000413383, now seen corresponding path program 2 times [2023-02-15 20:45:54,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:45:54,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290765391] [2023-02-15 20:45:54,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:54,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:45:54,131 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:45:54,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142519063] [2023-02-15 20:45:54,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 20:45:54,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:54,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:45:54,133 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:45:54,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 20:45:54,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 20:45:54,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 20:45:54,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 20:45:54,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:45:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-02-15 20:45:54,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:45:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-02-15 20:45:54,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:45:54,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290765391] [2023-02-15 20:45:54,271 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:45:54,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142519063] [2023-02-15 20:45:54,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142519063] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:45:54,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:45:54,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-15 20:45:54,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075637405] [2023-02-15 20:45:54,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:45:54,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 20:45:54,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:45:54,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 20:45:54,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-02-15 20:45:54,273 INFO L87 Difference]: Start difference. First operand 142 states and 198 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-15 20:45:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:45:54,518 INFO L93 Difference]: Finished difference Result 215 states and 290 transitions. [2023-02-15 20:45:54,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 20:45:54,524 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 65 [2023-02-15 20:45:54,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:45:54,525 INFO L225 Difference]: With dead ends: 215 [2023-02-15 20:45:54,526 INFO L226 Difference]: Without dead ends: 144 [2023-02-15 20:45:54,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2023-02-15 20:45:54,528 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 53 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:45:54,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 251 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:45:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-02-15 20:45:54,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 139. [2023-02-15 20:45:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 87 states have internal predecessors, (99), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-02-15 20:45:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 188 transitions. [2023-02-15 20:45:54,565 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 188 transitions. Word has length 65 [2023-02-15 20:45:54,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:45:54,566 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 188 transitions. [2023-02-15 20:45:54,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-15 20:45:54,566 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 188 transitions. [2023-02-15 20:45:54,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-02-15 20:45:54,567 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:45:54,567 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:45:54,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 20:45:54,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 20:45:54,769 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:45:54,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:45:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1382204855, now seen corresponding path program 1 times [2023-02-15 20:45:54,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:45:54,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969402546] [2023-02-15 20:45:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:54,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:45:54,782 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:45:54,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471922034] [2023-02-15 20:45:54,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:45:54,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:45:54,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:45:54,793 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:45:54,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 20:45:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:45:54,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 20:45:54,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:45:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-02-15 20:45:54,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:45:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-15 20:45:55,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:45:55,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969402546] [2023-02-15 20:45:55,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:45:55,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471922034] [2023-02-15 20:45:55,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471922034] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:45:55,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:45:55,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2023-02-15 20:45:55,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846899823] [2023-02-15 20:45:55,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:45:55,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 20:45:55,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:45:55,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 20:45:55,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:45:55,047 INFO L87 Difference]: Start difference. First operand 139 states and 188 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2023-02-15 20:45:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:45:55,161 INFO L93 Difference]: Finished difference Result 143 states and 191 transitions. [2023-02-15 20:45:55,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 20:45:55,161 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 68 [2023-02-15 20:45:55,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:45:55,161 INFO L225 Difference]: With dead ends: 143 [2023-02-15 20:45:55,161 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 20:45:55,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-02-15 20:45:55,162 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:45:55,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 108 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:45:55,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 20:45:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 20:45:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 20:45:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 20:45:55,163 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2023-02-15 20:45:55,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:45:55,163 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 20:45:55,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2023-02-15 20:45:55,163 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 20:45:55,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 20:45:55,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 20:45:55,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 20:45:55,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-15 20:45:55,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 20:45:56,261 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| 1) .cse0) (and (= |ULTIMATE.start_main_~r~0#1| 1) (= (+ |ULTIMATE.start_main_~s~0#1| 1) 0) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (= (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) 1) (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 0) (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) .cse0 (<= 0 |ULTIMATE.start_main_~b~0#1|)))) [2023-02-15 20:45:56,261 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (and (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)) (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~a~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 0) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~b~0#1|)) [2023-02-15 20:45:56,262 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (<= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:45:56,262 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 18 76) the Hoare annotation is: true [2023-02-15 20:45:56,262 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2023-02-15 20:45:56,262 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 20:45:56,262 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 20:45:56,262 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 1) (<= 0 |ULTIMATE.start_main_~x~0#1|)) [2023-02-15 20:45:56,262 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:45:56,262 INFO L899 garLoopResultBuilder]: For program point L53(lines 49 59) no Hoare annotation was computed. [2023-02-15 20:45:56,262 INFO L895 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (and (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:45:56,262 INFO L899 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2023-02-15 20:45:56,262 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2023-02-15 20:45:56,262 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 20:45:56,262 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:45:56,262 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:45:56,262 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:45:56,262 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 20:45:56,262 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse3 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse0 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse5 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 .cse1 (= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) (= |ULTIMATE.start_main_~k~0#1| 1) (<= (+ |ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~b~0#1|) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1) (exists ((|ULTIMATE.start_main_~k~0#1| Int)) (let ((.cse2 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (<= (+ .cse2 |ULTIMATE.start_main_~b~0#1|) 1) (<= 0 .cse2)))) .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~a~0#1| 1) .cse3 .cse0 .cse1 .cse4 (<= |ULTIMATE.start_main_~b~0#1| 1) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse5))) [2023-02-15 20:45:56,263 INFO L899 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2023-02-15 20:45:56,263 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-02-15 20:45:56,263 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2023-02-15 20:45:56,263 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-02-15 20:45:56,263 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~d~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:45:56,263 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2023-02-15 20:45:56,263 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-02-15 20:45:56,263 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-02-15 20:45:56,263 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2023-02-15 20:45:56,263 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-02-15 20:45:56,263 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-02-15 20:45:56,263 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-02-15 20:45:56,263 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-02-15 20:45:56,263 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-02-15 20:45:56,263 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-02-15 20:45:56,263 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-02-15 20:45:56,265 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:45:56,266 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 20:45:56,272 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0#1,QUANTIFIED] [2023-02-15 20:45:56,273 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0#1,QUANTIFIED] [2023-02-15 20:45:56,276 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0#1,QUANTIFIED] [2023-02-15 20:45:56,276 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0#1,QUANTIFIED] [2023-02-15 20:45:56,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 08:45:56 BoogieIcfgContainer [2023-02-15 20:45:56,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 20:45:56,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 20:45:56,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 20:45:56,279 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 20:45:56,280 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:45:34" (3/4) ... [2023-02-15 20:45:56,281 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 20:45:56,285 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-15 20:45:56,285 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 20:45:56,288 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-15 20:45:56,288 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-15 20:45:56,288 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 20:45:56,288 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 20:45:56,304 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((a == x && y <= 1) && p == 1) && q == 0) && r == 0) && v == b) && d == 1) && k == 1) && c + 1 <= b) && 0 <= c) && x <= 1) && (\exists ULTIMATE.start_main_~k~0#1 : int :: ULTIMATE.start_main_~k~0#1 * b + b <= 1 && 0 <= ULTIMATE.start_main_~k~0#1 * b)) && 1 <= x) && s == 1) && 1 <= y) || (((((((((((b == y && a == x * p + y * r) && k == 0) && a <= 1) && 1 <= x) && q == 0) && r == 0) && s == 1) && b <= 1) && c <= a) && 1 <= c) && 1 <= y) [2023-02-15 20:45:56,312 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 20:45:56,313 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 20:45:56,313 INFO L158 Benchmark]: Toolchain (without parser) took 21899.49ms. Allocated memory was 155.2MB in the beginning and 226.5MB in the end (delta: 71.3MB). Free memory was 106.6MB in the beginning and 188.8MB in the end (delta: -82.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:45:56,313 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory was 120.0MB in the beginning and 120.0MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:45:56,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.67ms. Allocated memory is still 155.2MB. Free memory was 106.5MB in the beginning and 95.4MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 20:45:56,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.13ms. Allocated memory is still 155.2MB. Free memory was 95.4MB in the beginning and 94.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:45:56,314 INFO L158 Benchmark]: Boogie Preprocessor took 38.05ms. Allocated memory is still 155.2MB. Free memory was 94.0MB in the beginning and 92.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 20:45:56,314 INFO L158 Benchmark]: RCFGBuilder took 225.09ms. Allocated memory is still 155.2MB. Free memory was 92.6MB in the beginning and 81.4MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 20:45:56,314 INFO L158 Benchmark]: TraceAbstraction took 21400.01ms. Allocated memory was 155.2MB in the beginning and 226.5MB in the end (delta: 71.3MB). Free memory was 80.0MB in the beginning and 191.9MB in the end (delta: -111.9MB). Peak memory consumption was 92.9MB. Max. memory is 16.1GB. [2023-02-15 20:45:56,315 INFO L158 Benchmark]: Witness Printer took 33.81ms. Allocated memory is still 226.5MB. Free memory was 191.9MB in the beginning and 188.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 20:45:56,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory was 120.0MB in the beginning and 120.0MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.67ms. Allocated memory is still 155.2MB. Free memory was 106.5MB in the beginning and 95.4MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.13ms. Allocated memory is still 155.2MB. Free memory was 95.4MB in the beginning and 94.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.05ms. Allocated memory is still 155.2MB. Free memory was 94.0MB in the beginning and 92.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 225.09ms. Allocated memory is still 155.2MB. Free memory was 92.6MB in the beginning and 81.4MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 21400.01ms. Allocated memory was 155.2MB in the beginning and 226.5MB in the end (delta: 71.3MB). Free memory was 80.0MB in the beginning and 191.9MB in the end (delta: -111.9MB). Peak memory consumption was 92.9MB. Max. memory is 16.1GB. * Witness Printer took 33.81ms. Allocated memory is still 226.5MB. Free memory was 191.9MB in the beginning and 188.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0#1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.3s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 673 SdHoareTripleChecker+Valid, 7.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 635 mSDsluCounter, 1718 SdHoareTripleChecker+Invalid, 7.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1307 mSDsCounter, 488 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2692 IncrementalHoareTripleChecker+Invalid, 3181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 488 mSolverCounterUnsat, 411 mSDtfsCounter, 2692 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 897 GetRequests, 684 SyntacticMatches, 15 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=9, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 103 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 124 PreInvPairs, 140 NumberOfFragments, 492 HoareAnnotationTreeSize, 124 FomulaSimplifications, 580 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 2403 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 516 NumberOfCodeBlocks, 516 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 811 ConstructedInterpolants, 3 QuantifiedInterpolants, 3483 SizeOfPredicates, 69 NumberOfNonLiveVariables, 1398 ConjunctsInSsa, 221 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 645/764 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant [2023-02-15 20:45:56,324 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0#1,QUANTIFIED] [2023-02-15 20:45:56,324 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0#1,QUANTIFIED] [2023-02-15 20:45:56,326 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0#1,QUANTIFIED] [2023-02-15 20:45:56,326 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0#1,QUANTIFIED] Derived loop invariant: ((((((((((((((a == x && y <= 1) && p == 1) && q == 0) && r == 0) && v == b) && d == 1) && k == 1) && c + 1 <= b) && 0 <= c) && x <= 1) && (\exists ULTIMATE.start_main_~k~0#1 : int :: ULTIMATE.start_main_~k~0#1 * b + b <= 1 && 0 <= ULTIMATE.start_main_~k~0#1 * b)) && 1 <= x) && s == 1) && 1 <= y) || (((((((((((b == y && a == x * p + y * r) && k == 0) && a <= 1) && 1 <= x) && q == 0) && r == 0) && s == 1) && b <= 1) && c <= a) && 1 <= c) && 1 <= y) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((((((r == 0 && q == 0) && v == b) && 1 <= a) && d == 1) && b == y) && a == x * p + y * r) && k == 0) && c <= x) && a <= 1) && b <= c) && s == 1) && 1 <= y - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((b == y && a == x * p + y * r) && a <= 1) && 1 <= x) && q == 0) && r == 0) && 1 <= a) && s == 1) && b <= 1) && 1 <= y) || (((((((((((r == 1 && s + 1 == 0) && x <= 1) && y <= 1) && q + p == 1) && a <= x) && b <= c) && c <= 0) && b + 1 <= a) && p == 0) && 1 <= y) && 0 <= b) RESULT: Ultimate proved your program to be correct! [2023-02-15 20:45:56,340 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