./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-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/cohencu-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 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 20:26:04,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 20:26:04,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 20:26:04,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 20:26:04,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 20:26:04,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 20:26:04,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 20:26:04,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 20:26:04,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 20:26:04,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 20:26:04,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 20:26:04,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 20:26:04,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 20:26:04,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 20:26:04,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 20:26:04,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 20:26:04,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 20:26:04,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 20:26:04,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 20:26:04,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 20:26:04,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 20:26:04,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 20:26:04,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 20:26:04,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 20:26:04,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 20:26:04,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 20:26:04,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 20:26:04,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 20:26:04,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 20:26:04,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 20:26:04,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 20:26:04,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 20:26:04,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 20:26:04,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 20:26:04,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 20:26:04,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 20:26:04,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 20:26:04,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 20:26:04,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 20:26:04,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 20:26:04,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 20:26:04,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 20:26:04,881 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 20:26:04,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 20:26:04,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 20:26:04,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 20:26:04,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 20:26:04,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 20:26:04,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 20:26:04,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 20:26:04,883 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 20:26:04,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 20:26:04,883 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 20:26:04,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 20:26:04,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 20:26:04,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 20:26:04,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 20:26:04,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 20:26:04,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 20:26:04,884 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 20:26:04,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 20:26:04,884 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 20:26:04,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 20:26:04,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 20:26:04,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 20:26:04,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 20:26:04,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:26:04,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 20:26:04,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 20:26:04,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 20:26:04,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 20:26:04,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 20:26:04,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 20:26:04,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 20:26:04,886 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 20:26:04,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 20:26:04,886 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 20:26:04,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d [2023-02-15 20:26:05,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 20:26:05,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 20:26:05,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 20:26:05,183 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 20:26:05,184 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 20:26:05,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2023-02-15 20:26:06,337 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 20:26:06,546 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 20:26:06,547 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2023-02-15 20:26:06,553 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57ecb5e5/c02985717e1040209935eda7422a21fa/FLAG2ddbd6982 [2023-02-15 20:26:06,569 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57ecb5e5/c02985717e1040209935eda7422a21fa [2023-02-15 20:26:06,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 20:26:06,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 20:26:06,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 20:26:06,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 20:26:06,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 20:26:06,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:26:06" (1/1) ... [2023-02-15 20:26:06,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74dcba3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06, skipping insertion in model container [2023-02-15 20:26:06,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:26:06" (1/1) ... [2023-02-15 20:26:06,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 20:26:06,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 20:26:06,742 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/cohencu-ll_valuebound1.c[588,601] [2023-02-15 20:26:06,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:26:06,775 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 20:26:06,784 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/cohencu-ll_valuebound1.c[588,601] [2023-02-15 20:26:06,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:26:06,804 INFO L208 MainTranslator]: Completed translation [2023-02-15 20:26:06,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06 WrapperNode [2023-02-15 20:26:06,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 20:26:06,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 20:26:06,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 20:26:06,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 20:26:06,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06" (1/1) ... [2023-02-15 20:26:06,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06" (1/1) ... [2023-02-15 20:26:06,838 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-02-15 20:26:06,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 20:26:06,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 20:26:06,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 20:26:06,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 20:26:06,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06" (1/1) ... [2023-02-15 20:26:06,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06" (1/1) ... [2023-02-15 20:26:06,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06" (1/1) ... [2023-02-15 20:26:06,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06" (1/1) ... [2023-02-15 20:26:06,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06" (1/1) ... [2023-02-15 20:26:06,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06" (1/1) ... [2023-02-15 20:26:06,872 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06" (1/1) ... [2023-02-15 20:26:06,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06" (1/1) ... [2023-02-15 20:26:06,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 20:26:06,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 20:26:06,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 20:26:06,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 20:26:06,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06" (1/1) ... [2023-02-15 20:26:06,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:26:06,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:26:06,905 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 20:26:06,920 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 20:26:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 20:26:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 20:26:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 20:26:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 20:26:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 20:26:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 20:26:06,989 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 20:26:06,991 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 20:26:07,187 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 20:26:07,192 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 20:26:07,193 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 20:26:07,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:26:07 BoogieIcfgContainer [2023-02-15 20:26:07,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 20:26:07,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 20:26:07,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 20:26:07,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 20:26:07,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 08:26:06" (1/3) ... [2023-02-15 20:26:07,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a8e47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:26:07, skipping insertion in model container [2023-02-15 20:26:07,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:26:06" (2/3) ... [2023-02-15 20:26:07,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a8e47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:26:07, skipping insertion in model container [2023-02-15 20:26:07,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:26:07" (3/3) ... [2023-02-15 20:26:07,221 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound1.c [2023-02-15 20:26:07,234 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 20:26:07,235 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 20:26:07,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 20:26:07,280 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;@76bc2bf5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 20:26:07,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 20:26:07,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-15 20:26:07,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 20:26:07,297 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:26:07,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:26:07,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:26:07,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:26:07,310 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2023-02-15 20:26:07,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:26:07,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584066065] [2023-02-15 20:26:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:07,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:26:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:26:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:26:07,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:26:07,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584066065] [2023-02-15 20:26:07,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584066065] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:26:07,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:26:07,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 20:26:07,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465080664] [2023-02-15 20:26:07,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:26:07,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 20:26:07,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:26:07,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 20:26:07,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:26:07,520 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 20:26:07,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:26:07,552 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2023-02-15 20:26:07,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 20:26:07,555 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 20:26:07,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:26:07,561 INFO L225 Difference]: With dead ends: 51 [2023-02-15 20:26:07,562 INFO L226 Difference]: Without dead ends: 23 [2023-02-15 20:26:07,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 20:26:07,570 INFO L413 NwaCegarLoop]: 37 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, 37 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 20:26:07,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:26:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-15 20:26:07,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-15 20:26:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-15 20:26:07,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2023-02-15 20:26:07,613 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2023-02-15 20:26:07,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:26:07,614 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2023-02-15 20:26:07,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 20:26:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2023-02-15 20:26:07,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 20:26:07,617 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:26:07,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:26:07,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 20:26:07,618 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:26:07,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:26:07,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2023-02-15 20:26:07,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:26:07,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230902381] [2023-02-15 20:26:07,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:07,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:26:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:26:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:26:07,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:26:07,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230902381] [2023-02-15 20:26:07,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230902381] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:26:07,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:26:07,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 20:26:07,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451034812] [2023-02-15 20:26:07,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:26:07,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:26:07,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:26:07,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:26:07,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 20:26:07,869 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 20:26:07,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:26:07,972 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2023-02-15 20:26:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:26:07,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 20:26:07,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:26:07,973 INFO L225 Difference]: With dead ends: 29 [2023-02-15 20:26:07,974 INFO L226 Difference]: Without dead ends: 27 [2023-02-15 20:26:07,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 20:26:07,975 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:26:07,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:26:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-15 20:26:07,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-15 20:26:07,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-15 20:26:07,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-02-15 20:26:07,986 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2023-02-15 20:26:07,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:26:07,987 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-02-15 20:26:07,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 20:26:07,987 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-02-15 20:26:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 20:26:07,987 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:26:07,988 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:26:07,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 20:26:07,988 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:26:07,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:26:07,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2023-02-15 20:26:07,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:26:07,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779286262] [2023-02-15 20:26:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:07,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:26:08,001 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:26:08,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132376927] [2023-02-15 20:26:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:08,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:08,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:26:08,005 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 20:26:08,006 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 20:26:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:26:08,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 20:26:08,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:26:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:26:08,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:26:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:26:08,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:26:08,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779286262] [2023-02-15 20:26:08,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:26:08,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132376927] [2023-02-15 20:26:08,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132376927] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:26:08,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:26:08,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-15 20:26:08,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309028807] [2023-02-15 20:26:08,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:26:08,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 20:26:08,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:26:08,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 20:26:08,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-15 20:26:08,357 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 20:26:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:26:08,751 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2023-02-15 20:26:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 20:26:08,752 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-02-15 20:26:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:26:08,754 INFO L225 Difference]: With dead ends: 52 [2023-02-15 20:26:08,754 INFO L226 Difference]: Without dead ends: 50 [2023-02-15 20:26:08,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:26:08,756 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 20:26:08,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 60 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 20:26:08,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-15 20:26:08,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2023-02-15 20:26:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-15 20:26:08,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 65 transitions. [2023-02-15 20:26:08,772 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 65 transitions. Word has length 14 [2023-02-15 20:26:08,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:26:08,772 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 65 transitions. [2023-02-15 20:26:08,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 20:26:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 65 transitions. [2023-02-15 20:26:08,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 20:26:08,773 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:26:08,773 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:26:08,780 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 20:26:08,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:08,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:26:08,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:26:08,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2023-02-15 20:26:08,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:26:08,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917718577] [2023-02-15 20:26:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:08,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:26:08,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:26:08,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409206965] [2023-02-15 20:26:08,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:08,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:08,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:26:08,998 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 20:26:09,003 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 20:26:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:26:09,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 20:26:09,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:26:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 20:26:09,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:26:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 20:26:09,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:26:09,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917718577] [2023-02-15 20:26:09,233 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:26:09,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409206965] [2023-02-15 20:26:09,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409206965] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:26:09,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:26:09,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-15 20:26:09,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279231534] [2023-02-15 20:26:09,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:26:09,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 20:26:09,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:26:09,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 20:26:09,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-15 20:26:09,236 INFO L87 Difference]: Start difference. First operand 47 states and 65 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 20:26:09,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:26:09,469 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2023-02-15 20:26:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 20:26:09,469 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2023-02-15 20:26:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:26:09,470 INFO L225 Difference]: With dead ends: 54 [2023-02-15 20:26:09,471 INFO L226 Difference]: Without dead ends: 52 [2023-02-15 20:26:09,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:26:09,472 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 20:26:09,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 47 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 20:26:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-15 20:26:09,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2023-02-15 20:26:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-15 20:26:09,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2023-02-15 20:26:09,488 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 19 [2023-02-15 20:26:09,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:26:09,488 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2023-02-15 20:26:09,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 20:26:09,488 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2023-02-15 20:26:09,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 20:26:09,489 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:26:09,489 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:26:09,495 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 20:26:09,697 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,SelfDestructingSolverStorable3 [2023-02-15 20:26:09,697 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:26:09,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:26:09,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2023-02-15 20:26:09,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:26:09,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718315048] [2023-02-15 20:26:09,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:09,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:26:09,706 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:26:09,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117577065] [2023-02-15 20:26:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:09,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:09,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:26:09,708 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 20:26:09,712 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 20:26:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:26:09,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 20:26:09,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:26:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 20:26:09,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:26:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 20:26:10,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:26:10,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718315048] [2023-02-15 20:26:10,190 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:26:10,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117577065] [2023-02-15 20:26:10,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117577065] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:26:10,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:26:10,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-15 20:26:10,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264767043] [2023-02-15 20:26:10,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:26:10,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 20:26:10,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:26:10,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 20:26:10,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-15 20:26:10,193 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-15 20:26:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:26:11,197 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2023-02-15 20:26:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 20:26:11,197 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2023-02-15 20:26:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:26:11,198 INFO L225 Difference]: With dead ends: 67 [2023-02-15 20:26:11,198 INFO L226 Difference]: Without dead ends: 58 [2023-02-15 20:26:11,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:26:11,200 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 20:26:11,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 60 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 20:26:11,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-15 20:26:11,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-02-15 20:26:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 31 states have (on average 1.064516129032258) internal successors, (33), 33 states have internal predecessors, (33), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-15 20:26:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2023-02-15 20:26:11,216 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 24 [2023-02-15 20:26:11,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:26:11,216 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2023-02-15 20:26:11,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-15 20:26:11,217 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2023-02-15 20:26:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-15 20:26:11,218 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:26:11,218 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:26:11,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 20:26:11,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:11,427 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:26:11,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:26:11,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 1 times [2023-02-15 20:26:11,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:26:11,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432335880] [2023-02-15 20:26:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:11,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:26:11,437 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:26:11,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565411926] [2023-02-15 20:26:11,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:11,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:11,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:26:11,439 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 20:26:11,443 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 20:26:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:26:11,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-15 20:26:11,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:26:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-15 20:26:11,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:26:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-15 20:26:11,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:26:11,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432335880] [2023-02-15 20:26:11,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:26:11,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565411926] [2023-02-15 20:26:11,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565411926] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:26:11,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:26:11,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-15 20:26:11,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999120107] [2023-02-15 20:26:11,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:26:11,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 20:26:11,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:26:11,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 20:26:11,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:26:11,753 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2023-02-15 20:26:14,082 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 20:26:14,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:26:14,864 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2023-02-15 20:26:14,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 20:26:14,865 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) Word has length 46 [2023-02-15 20:26:14,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:26:14,866 INFO L225 Difference]: With dead ends: 82 [2023-02-15 20:26:14,866 INFO L226 Difference]: Without dead ends: 80 [2023-02-15 20:26:14,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-02-15 20:26:14,867 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 73 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:26:14,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 62 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 281 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2023-02-15 20:26:14,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-15 20:26:14,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2023-02-15 20:26:14,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 45 states have internal predecessors, (45), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-15 20:26:14,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2023-02-15 20:26:14,901 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 46 [2023-02-15 20:26:14,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:26:14,901 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2023-02-15 20:26:14,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2023-02-15 20:26:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2023-02-15 20:26:14,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 20:26:14,905 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:26:14,905 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:26:14,913 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 20:26:15,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:15,111 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:26:15,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:26:15,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1498221753, now seen corresponding path program 2 times [2023-02-15 20:26:15,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:26:15,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327851052] [2023-02-15 20:26:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:15,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:26:15,119 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:26:15,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499843983] [2023-02-15 20:26:15,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 20:26:15,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:15,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:26:15,121 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 20:26:15,132 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 20:26:15,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 20:26:15,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 20:26:15,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-15 20:26:15,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:26:15,264 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-02-15 20:26:15,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:26:15,412 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-02-15 20:26:15,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:26:15,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327851052] [2023-02-15 20:26:15,413 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:26:15,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499843983] [2023-02-15 20:26:15,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499843983] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:26:15,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:26:15,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-15 20:26:15,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245015300] [2023-02-15 20:26:15,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:26:15,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 20:26:15,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:26:15,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 20:26:15,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-15 20:26:15,415 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-02-15 20:26:16,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:26:16,115 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2023-02-15 20:26:16,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 20:26:16,115 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 56 [2023-02-15 20:26:16,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:26:16,117 INFO L225 Difference]: With dead ends: 86 [2023-02-15 20:26:16,117 INFO L226 Difference]: Without dead ends: 81 [2023-02-15 20:26:16,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:26:16,118 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 20:26:16,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 88 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 20:26:16,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-15 20:26:16,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-02-15 20:26:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 48 states have internal predecessors, (48), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-15 20:26:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2023-02-15 20:26:16,141 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 56 [2023-02-15 20:26:16,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:26:16,142 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2023-02-15 20:26:16,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-02-15 20:26:16,142 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2023-02-15 20:26:16,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-15 20:26:16,150 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:26:16,150 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:26:16,157 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 20:26:16,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:16,356 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:26:16,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:26:16,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2023-02-15 20:26:16,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:26:16,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045464511] [2023-02-15 20:26:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:16,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:26:16,375 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:26:16,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898523779] [2023-02-15 20:26:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:16,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:16,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:26:16,384 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 20:26:16,386 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 20:26:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:26:16,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-15 20:26:16,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:26:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-02-15 20:26:16,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:26:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-02-15 20:26:16,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:26:16,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045464511] [2023-02-15 20:26:16,890 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:26:16,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898523779] [2023-02-15 20:26:16,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898523779] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:26:16,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:26:16,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-02-15 20:26:16,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341251] [2023-02-15 20:26:16,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:26:16,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 20:26:16,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:26:16,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 20:26:16,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:26:16,893 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-02-15 20:26:17,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:26:17,735 INFO L93 Difference]: Finished difference Result 95 states and 114 transitions. [2023-02-15 20:26:17,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 20:26:17,735 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 67 [2023-02-15 20:26:17,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:26:17,737 INFO L225 Difference]: With dead ends: 95 [2023-02-15 20:26:17,737 INFO L226 Difference]: Without dead ends: 93 [2023-02-15 20:26:17,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2023-02-15 20:26:17,738 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 30 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 20:26:17,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 150 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 20:26:17,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-15 20:26:17,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2023-02-15 20:26:17,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 52 states have internal predecessors, (53), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-02-15 20:26:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2023-02-15 20:26:17,767 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 67 [2023-02-15 20:26:17,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:26:17,768 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2023-02-15 20:26:17,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-02-15 20:26:17,768 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2023-02-15 20:26:17,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-15 20:26:17,769 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:26:17,769 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:26:17,774 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 20:26:17,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:17,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:26:17,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:26:17,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2023-02-15 20:26:17,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:26:17,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486731277] [2023-02-15 20:26:17,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:17,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:26:17,983 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:26:17,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097546782] [2023-02-15 20:26:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:17,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:17,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:26:17,985 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 20:26:18,004 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 20:26:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:26:18,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-15 20:26:18,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:26:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-02-15 20:26:18,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:26:18,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:26:18,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486731277] [2023-02-15 20:26:18,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:26:18,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097546782] [2023-02-15 20:26:18,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097546782] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 20:26:18,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:26:18,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-02-15 20:26:18,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011926368] [2023-02-15 20:26:18,461 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 20:26:18,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 20:26:18,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:26:18,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 20:26:18,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:26:18,462 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 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 20:26:18,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:26:18,706 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2023-02-15 20:26:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 20:26:18,706 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 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 72 [2023-02-15 20:26:18,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:26:18,708 INFO L225 Difference]: With dead ends: 97 [2023-02-15 20:26:18,708 INFO L226 Difference]: Without dead ends: 88 [2023-02-15 20:26:18,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-02-15 20:26:18,709 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:26:18,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 95 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:26:18,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-15 20:26:18,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-02-15 20:26:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 51 states have internal predecessors, (52), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-15 20:26:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2023-02-15 20:26:18,741 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 72 [2023-02-15 20:26:18,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:26:18,741 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2023-02-15 20:26:18,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 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 20:26:18,742 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2023-02-15 20:26:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-02-15 20:26:18,744 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:26:18,744 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-15 20:26:18,755 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 20:26:18,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:18,951 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:26:18,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:26:18,951 INFO L85 PathProgramCache]: Analyzing trace with hash -322800313, now seen corresponding path program 3 times [2023-02-15 20:26:18,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:26:18,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626155965] [2023-02-15 20:26:18,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:18,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:26:18,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:26:18,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247352261] [2023-02-15 20:26:18,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 20:26:18,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:18,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:26:18,972 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 20:26:18,974 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 20:26:19,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 20:26:19,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 20:26:19,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 20:26:19,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:26:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-02-15 20:26:19,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:26:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-02-15 20:26:19,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:26:19,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626155965] [2023-02-15 20:26:19,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:26:19,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247352261] [2023-02-15 20:26:19,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247352261] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:26:19,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:26:19,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-02-15 20:26:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725470850] [2023-02-15 20:26:19,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:26:19,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 20:26:19,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:26:19,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 20:26:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-02-15 20:26:19,542 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-02-15 20:26:23,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 20:26:25,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 20:26:27,287 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 20:26:27,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:26:27,288 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2023-02-15 20:26:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 20:26:27,289 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 78 [2023-02-15 20:26:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:26:27,290 INFO L225 Difference]: With dead ends: 110 [2023-02-15 20:26:27,290 INFO L226 Difference]: Without dead ends: 107 [2023-02-15 20:26:27,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2023-02-15 20:26:27,291 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 25 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 101 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-02-15 20:26:27,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 87 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 422 Invalid, 3 Unknown, 0 Unchecked, 7.6s Time] [2023-02-15 20:26:27,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-15 20:26:27,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2023-02-15 20:26:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 63 states have internal predecessors, (64), 27 states have call successors, (27), 16 states have call predecessors, (27), 16 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-15 20:26:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2023-02-15 20:26:27,320 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 78 [2023-02-15 20:26:27,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:26:27,321 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2023-02-15 20:26:27,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-02-15 20:26:27,321 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2023-02-15 20:26:27,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-02-15 20:26:27,323 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:26:27,324 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:26:27,329 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 20:26:27,529 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,SelfDestructingSolverStorable9 [2023-02-15 20:26:27,529 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:26:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:26:27,530 INFO L85 PathProgramCache]: Analyzing trace with hash -674604307, now seen corresponding path program 2 times [2023-02-15 20:26:27,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:26:27,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725301830] [2023-02-15 20:26:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:27,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:26:27,541 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:26:27,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773185940] [2023-02-15 20:26:27,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 20:26:27,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:27,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:26:27,546 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 20:26:27,547 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 20:26:27,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 20:26:27,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 20:26:27,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-15 20:26:27,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:26:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 78 proven. 25 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-02-15 20:26:27,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:26:28,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:26:28,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725301830] [2023-02-15 20:26:28,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:26:28,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773185940] [2023-02-15 20:26:28,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773185940] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 20:26:28,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:26:28,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-02-15 20:26:28,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492270295] [2023-02-15 20:26:28,931 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 20:26:28,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 20:26:28,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:26:28,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 20:26:28,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-02-15 20:26:28,933 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2023-02-15 20:26:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:26:29,283 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2023-02-15 20:26:29,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 20:26:29,283 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 99 [2023-02-15 20:26:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:26:29,284 INFO L225 Difference]: With dead ends: 111 [2023-02-15 20:26:29,285 INFO L226 Difference]: Without dead ends: 98 [2023-02-15 20:26:29,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-02-15 20:26:29,285 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 20:26:29,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 79 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 20:26:29,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-15 20:26:29,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-02-15 20:26:29,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 24 states have call successors, (24), 15 states have call predecessors, (24), 15 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-15 20:26:29,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2023-02-15 20:26:29,312 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 99 [2023-02-15 20:26:29,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:26:29,313 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2023-02-15 20:26:29,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2023-02-15 20:26:29,313 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2023-02-15 20:26:29,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-02-15 20:26:29,314 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:26:29,315 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:26:29,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 20:26:29,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:29,519 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:26:29,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:26:29,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 2 times [2023-02-15 20:26:29,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:26:29,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885423389] [2023-02-15 20:26:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:26:29,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:26:29,534 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:26:29,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320053783] [2023-02-15 20:26:29,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 20:26:29,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:26:29,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:26:29,536 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 20:26:29,554 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 20:26:29,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 20:26:29,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 20:26:29,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 20:26:29,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:26:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2023-02-15 20:26:29,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:26:29,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:26:29,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885423389] [2023-02-15 20:26:29,768 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:26:29,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320053783] [2023-02-15 20:26:29,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320053783] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:26:29,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:26:29,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 20:26:29,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028157504] [2023-02-15 20:26:29,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:26:29,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 20:26:29,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:26:29,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 20:26:29,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 20:26:29,771 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-02-15 20:26:29,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:26:29,930 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2023-02-15 20:26:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 20:26:29,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 121 [2023-02-15 20:26:29,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:26:29,932 INFO L225 Difference]: With dead ends: 102 [2023-02-15 20:26:29,932 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 20:26:29,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-02-15 20:26:29,936 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:26:29,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 82 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:26:29,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 20:26:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 20:26:29,937 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 20:26:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 20:26:29,937 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 121 [2023-02-15 20:26:29,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:26:29,938 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 20:26:29,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-02-15 20:26:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 20:26:29,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 20:26:29,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 20:26:29,951 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 20:26:30,151 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,SelfDestructingSolverStorable11 [2023-02-15 20:26:30,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 20:26:44,908 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 20:26:44,909 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse3 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse2 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse4 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6))) (.cse5 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|)))) .cse0 (= (+ |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) 6)) (= |ULTIMATE.start_main_~x~0#1| .cse1) (= (+ (* 18 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|)) (+ (* 36 .cse2) (* 48 |ULTIMATE.start_main_~n~0#1|) (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~n~0#1|)) 18)) (= |ULTIMATE.start_main_~n~0#1| 2)) (and .cse3 (= (+ |ULTIMATE.start_main_~y~0#1| 5) |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0) .cse4 .cse5 .cse0 (= |ULTIMATE.start_main_~z~0#1| 6)) (and .cse3 (= (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* 3 .cse2) (* 3 |ULTIMATE.start_main_~n~0#1|) .cse1 1)) .cse4 .cse5 .cse0 (= (+ |ULTIMATE.start_main_~x~0#1| 6) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1)))) [2023-02-15 20:26:44,909 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (let ((.cse4 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) (let ((.cse2 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse3 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6))) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| .cse4))) (or (and (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|)))) .cse0 (= (+ |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) 6)) .cse1 (= (+ (* 18 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|)) (+ (* 36 .cse2) (* 48 |ULTIMATE.start_main_~n~0#1|) (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~n~0#1|)) 18)) (= |ULTIMATE.start_main_~n~0#1| 2)) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) .cse3 (= |ULTIMATE.start_main_~z~0#1| 6)) (and (= (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* 3 .cse2) (* 3 |ULTIMATE.start_main_~n~0#1|) .cse4 1)) (<= |ULTIMATE.start_main_~a~0#1| 0) .cse3 (<= 0 |ULTIMATE.start_main_~a~0#1|) .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1))))) [2023-02-15 20:26:44,909 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* 3 |ULTIMATE.start_main_~n~0#1|) 1)) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) [2023-02-15 20:26:44,910 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)))) (or (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) .cse0 (= |ULTIMATE.start_main_~z~0#1| 6)) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 7) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (= |ULTIMATE.start_main_~x~0#1| 1)) (and (<= |ULTIMATE.start_main_~a~0#1| 1) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) 6)) (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~z~0#1| 1)) (= (+ (* 18 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|)) (+ (* 36 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* 48 |ULTIMATE.start_main_~n~0#1|) (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~n~0#1|)) 18)) (= |ULTIMATE.start_main_~n~0#1| 2)))) [2023-02-15 20:26:44,910 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse4 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) (let ((.cse2 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse3 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6))) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| .cse4))) (or (and (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|)))) .cse0 (= (+ |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) 6)) .cse1 (= (+ (* 18 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|)) (+ (* 36 .cse2) (* 48 |ULTIMATE.start_main_~n~0#1|) (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~n~0#1|)) 18)) (= |ULTIMATE.start_main_~n~0#1| 2)) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) .cse3 (= |ULTIMATE.start_main_~z~0#1| 6)) (and (= (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* 3 .cse2) (* 3 |ULTIMATE.start_main_~n~0#1|) .cse4 1)) (<= |ULTIMATE.start_main_~a~0#1| 0) .cse3 (<= 0 |ULTIMATE.start_main_~a~0#1|) .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1))))) [2023-02-15 20:26:44,910 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-02-15 20:26:44,910 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 20:26:44,910 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 56) the Hoare annotation is: true [2023-02-15 20:26:44,910 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2023-02-15 20:26:44,910 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse6 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) (let ((.cse3 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse2 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse4 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6))) (.cse5 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| .cse6))) (or (and (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|)))) .cse0 (= (+ |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) 6)) .cse1 (= (+ (* 18 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|)) (+ (* 36 .cse2) (* 48 |ULTIMATE.start_main_~n~0#1|) (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~n~0#1|)) 18)) (= |ULTIMATE.start_main_~n~0#1| 2)) (and .cse3 (= (+ |ULTIMATE.start_main_~y~0#1| 5) |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0) .cse4 .cse5 .cse0 (= |ULTIMATE.start_main_~z~0#1| 6)) (and .cse3 (= (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* 3 .cse2) (* 3 |ULTIMATE.start_main_~n~0#1|) .cse6 1)) .cse4 .cse5 .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1))))) [2023-02-15 20:26:44,910 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse3 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse2 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse4 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6))) (.cse5 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|)))) .cse0 (= (+ |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) 6)) (= |ULTIMATE.start_main_~x~0#1| .cse1) (= (+ (* 18 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|)) (+ (* 36 .cse2) (* 48 |ULTIMATE.start_main_~n~0#1|) (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~n~0#1|)) 18)) (= |ULTIMATE.start_main_~n~0#1| 2)) (and .cse3 (= (+ |ULTIMATE.start_main_~y~0#1| 5) |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0) .cse4 .cse5 .cse0 (= |ULTIMATE.start_main_~z~0#1| 6)) (and .cse3 (= (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* 3 .cse2) (* 3 |ULTIMATE.start_main_~n~0#1|) .cse1 1)) .cse4 .cse5 .cse0 (= (+ |ULTIMATE.start_main_~x~0#1| 6) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1)))) [2023-02-15 20:26:44,911 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse3 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse2 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse4 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6))) (.cse5 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|)))) .cse0 (= (+ |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) 6)) (= |ULTIMATE.start_main_~x~0#1| .cse1) (= (+ (* 18 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|)) (+ (* 36 .cse2) (* 48 |ULTIMATE.start_main_~n~0#1|) (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~n~0#1|)) 18)) (= |ULTIMATE.start_main_~n~0#1| 2)) (and .cse3 (= (+ |ULTIMATE.start_main_~y~0#1| 5) |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0) .cse4 .cse5 .cse0 (= |ULTIMATE.start_main_~z~0#1| 6)) (and .cse3 (= (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* 3 .cse2) (* 3 |ULTIMATE.start_main_~n~0#1|) .cse1 1)) .cse4 .cse5 .cse0 (= (+ |ULTIMATE.start_main_~x~0#1| 6) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1)))) [2023-02-15 20:26:44,911 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 20:26:44,911 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 20:26:44,911 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2023-02-15 20:26:44,911 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6)) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* 3 |ULTIMATE.start_main_~n~0#1|) 1)) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) [2023-02-15 20:26:44,911 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6))) (.cse3 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) (or (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) .cse0 (= |ULTIMATE.start_main_~z~0#1| 6)) (let ((.cse2 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) (and (= (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* 3 .cse1) (* 3 |ULTIMATE.start_main_~n~0#1|) .cse2 1)) (<= |ULTIMATE.start_main_~a~0#1| 0) .cse0 (<= 0 |ULTIMATE.start_main_~a~0#1|) .cse3 (= |ULTIMATE.start_main_~x~0#1| .cse2) (= |ULTIMATE.start_main_~x~0#1| 1))) (and (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) .cse3 (= (+ |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) 6)) (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~z~0#1| 1)) (= (+ (* 18 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|)) (+ (* 36 .cse1) (* 48 |ULTIMATE.start_main_~n~0#1|) (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~n~0#1|)) 18)) (not (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)) (= |ULTIMATE.start_main_~n~0#1| 2)))) [2023-02-15 20:26:44,911 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-15 20:26:44,923 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse6 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|))) (let ((.cse3 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse2 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse4 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6))) (.cse5 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| .cse6))) (or (and (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|)))) .cse0 (= (+ |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) 6)) .cse1 (= (+ (* 18 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|)) (+ (* 36 .cse2) (* 48 |ULTIMATE.start_main_~n~0#1|) (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~n~0#1|)) 18)) (= |ULTIMATE.start_main_~n~0#1| 2)) (and .cse3 (= (+ |ULTIMATE.start_main_~y~0#1| 5) |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0) .cse4 .cse5 .cse0 (= |ULTIMATE.start_main_~z~0#1| 6)) (and .cse3 (= (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* 3 .cse2) (* 3 |ULTIMATE.start_main_~n~0#1|) .cse6 1)) .cse4 .cse5 .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1))))) [2023-02-15 20:26:44,924 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse3 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse2 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse4 (= |ULTIMATE.start_main_~z~0#1| (+ (* 6 |ULTIMATE.start_main_~n~0#1|) 6))) (.cse5 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* 6 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|)))) .cse0 (= (+ |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) 6)) (= |ULTIMATE.start_main_~x~0#1| .cse1) (= (+ (* 18 |ULTIMATE.start_main_~y~0#1|) (* 18 |ULTIMATE.start_main_~x~0#1|)) (+ (* 36 .cse2) (* 48 |ULTIMATE.start_main_~n~0#1|) (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~n~0#1|)) 18)) (= |ULTIMATE.start_main_~n~0#1| 2)) (and .cse3 (= (+ |ULTIMATE.start_main_~y~0#1| 5) |ULTIMATE.start_main_~z~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0) .cse4 .cse5 .cse0 (= |ULTIMATE.start_main_~z~0#1| 6)) (and .cse3 (= (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* 3 .cse2) (* 3 |ULTIMATE.start_main_~n~0#1|) .cse1 1)) .cse4 .cse5 .cse0 (= (+ |ULTIMATE.start_main_~x~0#1| 6) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1)))) [2023-02-15 20:26:44,924 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-15 20:26:44,924 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-15 20:26:44,924 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-15 20:26:44,924 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-15 20:26:44,924 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-02-15 20:26:44,924 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-15 20:26:44,926 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1] [2023-02-15 20:26:44,928 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 20:26:44,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 08:26:44 BoogieIcfgContainer [2023-02-15 20:26:44,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 20:26:44,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 20:26:44,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 20:26:44,940 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 20:26:44,941 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:26:07" (3/4) ... [2023-02-15 20:26:44,943 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 20:26:44,949 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 20:26:44,952 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-15 20:26:44,952 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-15 20:26:44,952 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 20:26:44,953 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 20:26:44,980 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 20:26:44,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 20:26:44,981 INFO L158 Benchmark]: Toolchain (without parser) took 38407.91ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 99.5MB in the beginning and 135.7MB in the end (delta: -36.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:26:44,981 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:26:44,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.16ms. Allocated memory is still 140.5MB. Free memory was 99.5MB in the beginning and 89.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 20:26:44,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.10ms. Allocated memory is still 140.5MB. Free memory was 89.1MB in the beginning and 87.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 20:26:44,982 INFO L158 Benchmark]: Boogie Preprocessor took 36.18ms. Allocated memory is still 140.5MB. Free memory was 87.0MB in the beginning and 86.3MB in the end (delta: 634.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:26:44,982 INFO L158 Benchmark]: RCFGBuilder took 319.42ms. Allocated memory is still 140.5MB. Free memory was 86.3MB in the beginning and 109.5MB in the end (delta: -23.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 20:26:44,982 INFO L158 Benchmark]: TraceAbstraction took 37729.99ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 108.8MB in the beginning and 138.9MB in the end (delta: -30.1MB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. [2023-02-15 20:26:44,983 INFO L158 Benchmark]: Witness Printer took 40.26ms. Allocated memory is still 169.9MB. Free memory was 138.9MB in the beginning and 135.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 20:26:44,984 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.16ms. Allocated memory is still 140.5MB. Free memory was 99.5MB in the beginning and 89.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.10ms. Allocated memory is still 140.5MB. Free memory was 89.1MB in the beginning and 87.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.18ms. Allocated memory is still 140.5MB. Free memory was 87.0MB in the beginning and 86.3MB in the end (delta: 634.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 319.42ms. Allocated memory is still 140.5MB. Free memory was 86.3MB in the beginning and 109.5MB in the end (delta: -23.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 37729.99ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 108.8MB in the beginning and 138.9MB in the end (delta: -30.1MB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. * Witness Printer took 40.26ms. Allocated memory is still 169.9MB. Free memory was 138.9MB in the beginning and 135.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: 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 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 37.7s, OverallIterations: 12, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 15.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 14.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 268 SdHoareTripleChecker+Valid, 13.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 189 mSDsluCounter, 910 SdHoareTripleChecker+Invalid, 13.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 575 mSDsCounter, 442 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2611 IncrementalHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 442 mSolverCounterUnsat, 335 mSDtfsCounter, 2611 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1016 GetRequests, 856 SyntacticMatches, 8 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=10, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 9 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 65 PreInvPairs, 101 NumberOfFragments, 1299 HoareAnnotationTreeSize, 65 FomulaSimplifications, 359 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 2630 FormulaSimplificationTreeSizeReductionInter, 14.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 614 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 899 ConstructedInterpolants, 0 QuantifiedInterpolants, 4090 SizeOfPredicates, 33 NumberOfNonLiveVariables, 1406 ConjunctsInSsa, 224 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 3402/3622 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: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((x * z == 12 * x + 6 * (x * a) && cond == 1) && x + 2 * z == 2 * y + 6) && x == n * n * n) && 18 * y + 18 * x == 36 * (n * n) + 48 * n + 6 * (y * n) + 18) && n == 2) || ((((((a <= 1 && y + 5 == z) && x == 0) && z == 6 * n + 6) && 0 <= a) && cond == 1) && z == 6)) || ((((((a <= 1 && y + x == 3 * (n * n) + 3 * n + n * n * n + 1) && z == 6 * n + 6) && 0 <= a) && cond == 1) && x + 6 == y) && x == 1) RESULT: Ultimate proved your program to be correct! [2023-02-15 20:26:45,002 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