./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/recursive/MultCommutative-2.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 ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:03:12,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:03:12,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:03:12,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:03:12,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:03:12,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:03:12,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:03:12,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:03:12,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:03:12,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:03:12,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:03:12,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:03:12,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:03:12,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:03:12,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:03:12,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:03:12,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:03:12,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:03:12,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:03:12,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:03:12,911 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:03:12,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:03:12,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:03:12,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:03:12,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:03:12,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:03:12,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:03:12,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:03:12,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:03:12,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:03:12,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:03:12,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:03:12,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:03:12,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:03:12,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:03:12,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:03:12,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:03:12,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:03:12,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:03:12,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:03:12,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:03:12,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:03:12,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:03:12,960 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:03:12,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:03:12,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:03:12,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:03:12,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:03:12,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:03:12,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:03:12,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:03:12,963 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:03:12,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:03:12,964 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:03:12,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:03:12,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:03:12,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:03:12,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:03:12,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:03:12,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:03:12,965 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:03:12,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:03:12,965 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:03:12,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:03:12,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:03:12,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:03:12,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:03:12,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:03:12,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:03:12,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:03:12,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:03:12,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:03:12,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:03:12,967 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:03:12,967 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:03:12,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:03:12,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2022-07-21 05:03:13,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:03:13,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:03:13,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:03:13,240 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:03:13,249 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:03:13,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2022-07-21 05:03:13,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83db82788/e53050a45b8c4b5584019594349bf1bf/FLAG18b00c445 [2022-07-21 05:03:13,659 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:03:13,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2022-07-21 05:03:13,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83db82788/e53050a45b8c4b5584019594349bf1bf/FLAG18b00c445 [2022-07-21 05:03:13,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83db82788/e53050a45b8c4b5584019594349bf1bf [2022-07-21 05:03:13,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:03:13,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:03:13,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:03:13,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:03:13,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:03:13,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:03:13" (1/1) ... [2022-07-21 05:03:13,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e5373b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:13, skipping insertion in model container [2022-07-21 05:03:13,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:03:13" (1/1) ... [2022-07-21 05:03:13,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:03:13,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:03:13,835 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2022-07-21 05:03:13,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:03:13,843 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:03:13,886 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2022-07-21 05:03:13,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:03:13,900 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:03:13,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:13 WrapperNode [2022-07-21 05:03:13,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:03:13,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:03:13,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:03:13,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:03:13,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:13" (1/1) ... [2022-07-21 05:03:13,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:13" (1/1) ... [2022-07-21 05:03:13,922 INFO L137 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-07-21 05:03:13,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:03:13,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:03:13,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:03:13,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:03:13,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:13" (1/1) ... [2022-07-21 05:03:13,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:13" (1/1) ... [2022-07-21 05:03:13,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:13" (1/1) ... [2022-07-21 05:03:13,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:13" (1/1) ... [2022-07-21 05:03:13,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:13" (1/1) ... [2022-07-21 05:03:13,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:13" (1/1) ... [2022-07-21 05:03:13,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:13" (1/1) ... [2022-07-21 05:03:13,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:03:13,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:03:13,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:03:13,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:03:13,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:13" (1/1) ... [2022-07-21 05:03:13,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:03:13,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:13,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:03:14,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:03:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:03:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-07-21 05:03:14,039 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-07-21 05:03:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:03:14,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:03:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:03:14,082 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:03:14,083 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:03:14,199 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:03:14,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:03:14,204 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 05:03:14,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:03:14 BoogieIcfgContainer [2022-07-21 05:03:14,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:03:14,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:03:14,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:03:14,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:03:14,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:03:13" (1/3) ... [2022-07-21 05:03:14,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6187e452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:03:14, skipping insertion in model container [2022-07-21 05:03:14,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:13" (2/3) ... [2022-07-21 05:03:14,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6187e452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:03:14, skipping insertion in model container [2022-07-21 05:03:14,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:03:14" (3/3) ... [2022-07-21 05:03:14,212 INFO L111 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2022-07-21 05:03:14,222 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:03:14,222 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:03:14,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:03:14,270 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4913254e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60db74f4 [2022-07-21 05:03:14,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:03:14,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 05:03:14,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-21 05:03:14,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:14,279 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:14,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1513944532, now seen corresponding path program 1 times [2022-07-21 05:03:14,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:14,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209808636] [2022-07-21 05:03:14,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:14,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:14,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:14,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 05:03:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 05:03:14,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:14,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209808636] [2022-07-21 05:03:14,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209808636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:03:14,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:03:14,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:03:14,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196069197] [2022-07-21 05:03:14,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:03:14,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:03:14,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:03:14,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:03:14,611 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 05:03:14,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:14,736 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2022-07-21 05:03:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:03:14,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-07-21 05:03:14,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:14,744 INFO L225 Difference]: With dead ends: 44 [2022-07-21 05:03:14,744 INFO L226 Difference]: Without dead ends: 28 [2022-07-21 05:03:14,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 05:03:14,751 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 12 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:14,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 151 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:03:14,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-21 05:03:14,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-07-21 05:03:14,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-07-21 05:03:14,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2022-07-21 05:03:14,792 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 20 [2022-07-21 05:03:14,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:14,793 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-07-21 05:03:14,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 05:03:14,793 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2022-07-21 05:03:14,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-21 05:03:14,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:14,795 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:14,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:03:14,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:14,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:14,796 INFO L85 PathProgramCache]: Analyzing trace with hash 555960324, now seen corresponding path program 1 times [2022-07-21 05:03:14,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:14,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534976053] [2022-07-21 05:03:14,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:14,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:14,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:14,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 05:03:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:14,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:03:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:03:14,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:14,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534976053] [2022-07-21 05:03:14,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534976053] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:14,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6026263] [2022-07-21 05:03:14,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:14,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:14,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:14,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:03:14,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 05:03:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:14,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 05:03:14,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 05:03:15,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 05:03:15,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6026263] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:15,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:15,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2022-07-21 05:03:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866272001] [2022-07-21 05:03:15,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:15,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 05:03:15,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 05:03:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:03:15,118 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-21 05:03:15,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:15,286 INFO L93 Difference]: Finished difference Result 52 states and 83 transitions. [2022-07-21 05:03:15,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:03:15,287 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2022-07-21 05:03:15,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:15,288 INFO L225 Difference]: With dead ends: 52 [2022-07-21 05:03:15,288 INFO L226 Difference]: Without dead ends: 27 [2022-07-21 05:03:15,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-07-21 05:03:15,289 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 17 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:15,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 113 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:03:15,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-21 05:03:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-07-21 05:03:15,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 05:03:15,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-07-21 05:03:15,295 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 26 [2022-07-21 05:03:15,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:15,295 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-07-21 05:03:15,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-21 05:03:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-07-21 05:03:15,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-21 05:03:15,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:15,296 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:15,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:15,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:15,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2011031750, now seen corresponding path program 1 times [2022-07-21 05:03:15,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:15,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257817994] [2022-07-21 05:03:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:15,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:03:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 05:03:15,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:15,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257817994] [2022-07-21 05:03:15,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257817994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:03:15,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:03:15,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:03:15,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252254691] [2022-07-21 05:03:15,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:03:15,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:03:15,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:15,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:03:15,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:03:15,558 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 05:03:15,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:15,593 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-07-21 05:03:15,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:03:15,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-07-21 05:03:15,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:15,595 INFO L225 Difference]: With dead ends: 31 [2022-07-21 05:03:15,595 INFO L226 Difference]: Without dead ends: 27 [2022-07-21 05:03:15,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:03:15,596 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:15,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:03:15,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-21 05:03:15,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-21 05:03:15,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 05:03:15,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-07-21 05:03:15,603 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 27 [2022-07-21 05:03:15,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:15,604 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-07-21 05:03:15,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 05:03:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-07-21 05:03:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-21 05:03:15,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:15,605 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:15,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:03:15,605 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:15,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:15,606 INFO L85 PathProgramCache]: Analyzing trace with hash -760266050, now seen corresponding path program 2 times [2022-07-21 05:03:15,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:15,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064814528] [2022-07-21 05:03:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:15,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:03:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 05:03:15,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:15,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064814528] [2022-07-21 05:03:15,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064814528] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:15,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165019045] [2022-07-21 05:03:15,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 05:03:15,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:15,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:15,852 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:03:15,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 05:03:15,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 05:03:15,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:15,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-21 05:03:15,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 05:03:16,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 05:03:16,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165019045] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:16,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:16,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 14] total 35 [2022-07-21 05:03:16,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377995478] [2022-07-21 05:03:16,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:16,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-21 05:03:16,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:16,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-21 05:03:16,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2022-07-21 05:03:16,890 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 35 states, 32 states have (on average 1.5625) internal successors, (50), 24 states have internal predecessors, (50), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2022-07-21 05:03:17,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:17,353 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-07-21 05:03:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 05:03:17,354 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 1.5625) internal successors, (50), 24 states have internal predecessors, (50), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) Word has length 34 [2022-07-21 05:03:17,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:17,356 INFO L225 Difference]: With dead ends: 40 [2022-07-21 05:03:17,356 INFO L226 Difference]: Without dead ends: 36 [2022-07-21 05:03:17,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=1571, Unknown=0, NotChecked=0, Total=1806 [2022-07-21 05:03:17,362 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 41 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:17,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 188 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:03:17,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-21 05:03:17,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-07-21 05:03:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-21 05:03:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-07-21 05:03:17,382 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 34 [2022-07-21 05:03:17,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:17,382 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-07-21 05:03:17,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 1.5625) internal successors, (50), 24 states have internal predecessors, (50), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2022-07-21 05:03:17,387 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-07-21 05:03:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-21 05:03:17,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:17,390 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:17,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:17,597 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 [2022-07-21 05:03:17,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:17,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:17,602 INFO L85 PathProgramCache]: Analyzing trace with hash -757286924, now seen corresponding path program 1 times [2022-07-21 05:03:17,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:17,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028022523] [2022-07-21 05:03:17,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:17,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:17,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:17,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:03:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:17,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:17,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:03:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:17,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 05:03:17,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:17,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028022523] [2022-07-21 05:03:17,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028022523] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:17,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867716084] [2022-07-21 05:03:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:17,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:17,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:17,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:03:17,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 05:03:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:17,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 05:03:17,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 05:03:17,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 05:03:17,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867716084] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:17,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:17,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2022-07-21 05:03:17,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267211211] [2022-07-21 05:03:17,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:17,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 05:03:17,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:17,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 05:03:17,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-07-21 05:03:17,907 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-21 05:03:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:17,958 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2022-07-21 05:03:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:03:17,958 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 47 [2022-07-21 05:03:17,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:17,960 INFO L225 Difference]: With dead ends: 54 [2022-07-21 05:03:17,960 INFO L226 Difference]: Without dead ends: 25 [2022-07-21 05:03:17,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-07-21 05:03:17,963 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 22 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:17,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 78 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:03:17,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-21 05:03:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-21 05:03:17,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 05:03:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-07-21 05:03:17,973 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 47 [2022-07-21 05:03:17,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:17,974 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-07-21 05:03:17,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-21 05:03:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-07-21 05:03:17,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 05:03:17,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:17,978 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:17,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:18,194 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 [2022-07-21 05:03:18,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:18,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:18,195 INFO L85 PathProgramCache]: Analyzing trace with hash -983670890, now seen corresponding path program 3 times [2022-07-21 05:03:18,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:18,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906938748] [2022-07-21 05:03:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:18,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:03:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 05:03:18,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:18,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906938748] [2022-07-21 05:03:18,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906938748] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:18,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203828526] [2022-07-21 05:03:18,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 05:03:18,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:18,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:18,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:03:18,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 05:03:18,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-21 05:03:18,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:18,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-21 05:03:18,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 05:03:18,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 05:03:20,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203828526] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:20,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:20,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 20] total 49 [2022-07-21 05:03:20,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950572075] [2022-07-21 05:03:20,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:20,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-21 05:03:20,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:20,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-21 05:03:20,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2147, Unknown=0, NotChecked=0, Total=2352 [2022-07-21 05:03:20,257 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 49 states, 45 states have (on average 1.511111111111111) internal successors, (68), 34 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 13 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2022-07-21 05:03:21,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:21,453 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-07-21 05:03:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 05:03:21,453 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 45 states have (on average 1.511111111111111) internal successors, (68), 34 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 13 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) Word has length 41 [2022-07-21 05:03:21,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:21,454 INFO L225 Difference]: With dead ends: 58 [2022-07-21 05:03:21,454 INFO L226 Difference]: Without dead ends: 52 [2022-07-21 05:03:21,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=469, Invalid=3821, Unknown=0, NotChecked=0, Total=4290 [2022-07-21 05:03:21,455 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 31 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:21,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 403 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 05:03:21,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-21 05:03:21,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2022-07-21 05:03:21,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (17), 9 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-21 05:03:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2022-07-21 05:03:21,466 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 41 [2022-07-21 05:03:21,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:21,467 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2022-07-21 05:03:21,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 45 states have (on average 1.511111111111111) internal successors, (68), 34 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 13 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2022-07-21 05:03:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2022-07-21 05:03:21,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-21 05:03:21,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:21,468 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:21,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:21,680 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 [2022-07-21 05:03:21,681 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1241549144, now seen corresponding path program 4 times [2022-07-21 05:03:21,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:21,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382747495] [2022-07-21 05:03:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:21,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:21,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:21,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:21,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:21,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:03:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:21,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,024 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 16 proven. 68 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 05:03:22,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:22,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382747495] [2022-07-21 05:03:22,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382747495] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:22,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099500921] [2022-07-21 05:03:22,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 05:03:22,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:22,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:22,026 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:03:22,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 05:03:22,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 05:03:22,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:22,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 85 conjunts are in the unsatisfiable core [2022-07-21 05:03:22,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 05:03:22,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:25,991 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111_153| Int) (v_mult_~n_BEFORE_CALL_20 Int) (|aux_div_v_mult_#in~n_BEFORE_CALL_20_66| Int) (|aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111_153| Int) (|aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111| Int)) (let ((.cse4 (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111_153| 3))) (let ((.cse3 (div (+ (* 2 v_mult_~n_BEFORE_CALL_20) (* 2 |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111_153|) (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111_153| (- 6))) (- 3))) (.cse2 (+ .cse4 |c_mult_#res|)) (.cse1 (* |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111| 3)) (.cse0 (div (+ (* (- 2) v_mult_~n_BEFORE_CALL_20) (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111_153| 6) (* (- 2) |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111_153|)) 3))) (or (< |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111_153| 0) (<= .cse0 |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111|) (<= (+ 3 |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111_153| .cse1) .cse2) (< .cse3 |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111_153|) (< .cse4 (+ |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111_153| (* |aux_div_v_mult_#in~n_BEFORE_CALL_20_66| 3))) (< .cse0 .cse3) (< .cse2 (+ |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_111_153| .cse1)) (< |aux_div_v_mult_#in~n_BEFORE_CALL_20_66| .cse0))))) (<= |c_mult_#in~m| 0) (forall ((v_mult_~n_BEFORE_CALL_20 Int) (|aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139_143| Int) (|aux_div_v_mult_#in~n_BEFORE_CALL_20_66| Int) (|aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139| Int) (|aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139_143| Int)) (let ((.cse5 (div (+ (* (- 2) |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139_143|) (* (- 2) v_mult_~n_BEFORE_CALL_20) (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139_143| 6)) 3)) (.cse6 (div (+ (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139_143| (- 6)) (* 2 v_mult_~n_BEFORE_CALL_20) (* 2 |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139_143|)) (- 3))) (.cse8 (+ (* |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139| 3) |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139_143|)) (.cse7 (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139_143| 3))) (or (< |aux_div_v_mult_#in~n_BEFORE_CALL_20_66| .cse5) (<= |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139| .cse6) (<= (+ .cse7 3 |c_mult_#res|) .cse8) (< .cse6 |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139_143|) (< .cse7 (+ |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139_143| (* |aux_div_v_mult_#in~n_BEFORE_CALL_20_66| 3))) (< |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_20_66_139_143| 0) (< .cse5 .cse6) (< .cse8 (+ .cse7 |c_mult_#res|))))) (not (< |c_mult_#in~m| 0))) is different from false [2022-07-21 05:03:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 12 not checked. [2022-07-21 05:03:26,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099500921] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:26,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:26,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 25] total 51 [2022-07-21 05:03:26,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429259494] [2022-07-21 05:03:26,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:26,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-21 05:03:26,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:26,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-21 05:03:26,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2269, Unknown=1, NotChecked=96, Total=2550 [2022-07-21 05:03:26,206 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 51 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 33 states have internal predecessors, (69), 11 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) [2022-07-21 05:03:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:27,417 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2022-07-21 05:03:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 05:03:27,418 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 33 states have internal predecessors, (69), 11 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) Word has length 55 [2022-07-21 05:03:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:27,419 INFO L225 Difference]: With dead ends: 66 [2022-07-21 05:03:27,419 INFO L226 Difference]: Without dead ends: 58 [2022-07-21 05:03:27,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 88 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=437, Invalid=4258, Unknown=1, NotChecked=134, Total=4830 [2022-07-21 05:03:27,420 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 63 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:27,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 336 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1164 Invalid, 0 Unknown, 43 Unchecked, 0.6s Time] [2022-07-21 05:03:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-07-21 05:03:27,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2022-07-21 05:03:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.088235294117647) internal successors, (37), 35 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (21), 11 states have call predecessors, (21), 7 states have call successors, (21) [2022-07-21 05:03:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions. [2022-07-21 05:03:27,428 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 55 [2022-07-21 05:03:27,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:27,430 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions. [2022-07-21 05:03:27,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 33 states have internal predecessors, (69), 11 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) [2022-07-21 05:03:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2022-07-21 05:03:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-21 05:03:27,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:27,432 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:27,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:27,643 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 [2022-07-21 05:03:27,643 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:27,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:27,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1278690222, now seen corresponding path program 5 times [2022-07-21 05:03:27,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:27,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914305717] [2022-07-21 05:03:27,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:27,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:27,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:27,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:27,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:27,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:27,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:03:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:27,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 52 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-21 05:03:27,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:27,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914305717] [2022-07-21 05:03:27,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914305717] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:27,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208203736] [2022-07-21 05:03:27,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-21 05:03:27,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:27,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:27,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:03:27,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 05:03:27,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-21 05:03:27,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:27,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 71 conjunts are in the unsatisfiable core [2022-07-21 05:03:28,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 1 proven. 53 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 05:03:28,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 05:03:29,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208203736] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:29,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:29,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 23] total 53 [2022-07-21 05:03:29,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135012263] [2022-07-21 05:03:29,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:29,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-21 05:03:29,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:29,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-21 05:03:29,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2533, Unknown=0, NotChecked=0, Total=2756 [2022-07-21 05:03:29,490 INFO L87 Difference]: Start difference. First operand 50 states and 65 transitions. Second operand has 53 states, 49 states have (on average 1.469387755102041) internal successors, (72), 35 states have internal predecessors, (72), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (18), 18 states have call predecessors, (18), 10 states have call successors, (18) [2022-07-21 05:03:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:30,214 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2022-07-21 05:03:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 05:03:30,216 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 49 states have (on average 1.469387755102041) internal successors, (72), 35 states have internal predecessors, (72), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (18), 18 states have call predecessors, (18), 10 states have call successors, (18) Word has length 48 [2022-07-21 05:03:30,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:30,219 INFO L225 Difference]: With dead ends: 72 [2022-07-21 05:03:30,219 INFO L226 Difference]: Without dead ends: 64 [2022-07-21 05:03:30,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1403 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=491, Invalid=4621, Unknown=0, NotChecked=0, Total=5112 [2022-07-21 05:03:30,221 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 43 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:30,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 219 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:03:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-21 05:03:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2022-07-21 05:03:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.088235294117647) internal successors, (37), 35 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (20), 11 states have call predecessors, (20), 7 states have call successors, (20) [2022-07-21 05:03:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2022-07-21 05:03:30,258 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 48 [2022-07-21 05:03:30,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:30,258 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2022-07-21 05:03:30,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 49 states have (on average 1.469387755102041) internal successors, (72), 35 states have internal predecessors, (72), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (18), 18 states have call predecessors, (18), 10 states have call successors, (18) [2022-07-21 05:03:30,258 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2022-07-21 05:03:30,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 05:03:30,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:30,261 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:30,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-21 05:03:30,465 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 [2022-07-21 05:03:30,466 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:30,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:30,479 INFO L85 PathProgramCache]: Analyzing trace with hash 230391048, now seen corresponding path program 6 times [2022-07-21 05:03:30,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:30,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317900151] [2022-07-21 05:03:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:30,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:30,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:30,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:03:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:30,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:30,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:30,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:30,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-21 05:03:30,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:30,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317900151] [2022-07-21 05:03:30,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317900151] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:30,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955275255] [2022-07-21 05:03:30,971 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-21 05:03:30,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:30,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:31,012 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:03:31,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 05:03:31,070 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-07-21 05:03:31,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:31,073 WARN L261 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 109 conjunts are in the unsatisfiable core [2022-07-21 05:03:31,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 5 proven. 108 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 05:03:31,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 26 proven. 156 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 05:03:34,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955275255] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:34,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:34,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 30] total 62 [2022-07-21 05:03:34,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681231602] [2022-07-21 05:03:34,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:34,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-07-21 05:03:34,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:34,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-07-21 05:03:34,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=3556, Unknown=0, NotChecked=0, Total=3782 [2022-07-21 05:03:34,164 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 62 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 38 states have internal predecessors, (83), 13 states have call successors, (13), 1 states have call predecessors, (13), 17 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2022-07-21 05:03:35,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:35,683 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2022-07-21 05:03:35,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 05:03:35,684 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 38 states have internal predecessors, (83), 13 states have call successors, (13), 1 states have call predecessors, (13), 17 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) Word has length 69 [2022-07-21 05:03:35,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:35,684 INFO L225 Difference]: With dead ends: 84 [2022-07-21 05:03:35,684 INFO L226 Difference]: Without dead ends: 76 [2022-07-21 05:03:35,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 110 SyntacticMatches, 10 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1679 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=587, Invalid=6553, Unknown=0, NotChecked=0, Total=7140 [2022-07-21 05:03:35,686 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:35,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 617 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 05:03:35,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-21 05:03:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2022-07-21 05:03:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 47 states have internal predecessors, (50), 9 states have call successors, (9), 4 states have call predecessors, (9), 12 states have return successors, (33), 16 states have call predecessors, (33), 9 states have call successors, (33) [2022-07-21 05:03:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 92 transitions. [2022-07-21 05:03:35,695 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 92 transitions. Word has length 69 [2022-07-21 05:03:35,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:35,695 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 92 transitions. [2022-07-21 05:03:35,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 38 states have internal predecessors, (83), 13 states have call successors, (13), 1 states have call predecessors, (13), 17 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2022-07-21 05:03:35,695 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 92 transitions. [2022-07-21 05:03:35,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-21 05:03:35,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:35,696 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:35,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:35,914 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 [2022-07-21 05:03:35,914 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:35,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:35,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1792410124, now seen corresponding path program 7 times [2022-07-21 05:03:35,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:35,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412964474] [2022-07-21 05:03:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:35,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:35,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:35,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:36,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:03:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:36,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:36,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:36,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 28 proven. 146 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-21 05:03:36,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:36,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412964474] [2022-07-21 05:03:36,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412964474] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:36,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360344995] [2022-07-21 05:03:36,456 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-21 05:03:36,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:36,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:36,461 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:03:36,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 05:03:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:36,514 WARN L261 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 121 conjunts are in the unsatisfiable core [2022-07-21 05:03:36,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 6 proven. 136 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-21 05:03:37,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:41,976 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_mult_#in~m| 0) (forall ((|aux_div_v_mult_#in~n_BEFORE_CALL_58_112| Int) (v_mult_~n_BEFORE_CALL_58 Int) (|aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133_143| Int) (|aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133| Int) (|aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133_143| Int)) (let ((.cse0 (div (+ (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133_143| (- 12)) (* |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133_143| 2) (* 2 v_mult_~n_BEFORE_CALL_58)) (- 6))) (.cse2 (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133_143| 6)) (.cse1 (+ |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133_143| (* 6 |aux_div_v_mult_#in~n_BEFORE_CALL_58_112|))) (.cse3 (div (+ (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133_143| 12) (* (- 2) v_mult_~n_BEFORE_CALL_58) (* (- 2) |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133_143|)) 6))) (or (< .cse0 |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133_143|) (<= |aux_div_v_mult_#in~n_BEFORE_CALL_58_112| .cse0) (< .cse1 (+ .cse2 |c_mult_#res|)) (< |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133_143| 0) (< .cse2 (+ (* |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133| 6) |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133_143|)) (< .cse3 .cse0) (<= (+ .cse2 6 |c_mult_#res|) .cse1) (< |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_58_112_133| .cse3)))) (not (< |c_mult_#in~m| 0)) (forall ((|aux_div_v_mult_#in~n_BEFORE_CALL_58_78| Int) (|aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121_141| Int) (|aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121| Int) (v_mult_~n_BEFORE_CALL_58 Int) (|aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121_141| Int)) (let ((.cse4 (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121_141| 6))) (let ((.cse6 (+ .cse4 |c_mult_#res|)) (.cse5 (* |aux_div_v_mult_#in~n_BEFORE_CALL_58_78| 6)) (.cse7 (div (+ (* (- 2) |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121_141|) (* (- 2) v_mult_~n_BEFORE_CALL_58) (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121_141| 12)) 6)) (.cse8 (div (+ (* 2 v_mult_~n_BEFORE_CALL_58) (* 2 |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121_141|) (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121_141| (- 12))) (- 6)))) (or (< .cse4 (+ (* |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121| 6) |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121_141|)) (<= (+ .cse5 6 |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121_141|) .cse6) (< .cse6 (+ .cse5 |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121_141|)) (< |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121_141| 0) (< .cse7 .cse8) (< |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121| .cse7) (<= .cse7 |aux_div_v_mult_#in~n_BEFORE_CALL_58_78|) (< .cse8 |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_58_78_121_141|)))))) is different from false [2022-07-21 05:03:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 29 proven. 187 refuted. 0 times theorem prover too weak. 47 trivial. 18 not checked. [2022-07-21 05:03:42,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360344995] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:42,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:42,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 34] total 69 [2022-07-21 05:03:42,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324833144] [2022-07-21 05:03:42,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:42,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-07-21 05:03:42,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:42,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-07-21 05:03:42,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=4309, Unknown=1, NotChecked=132, Total=4692 [2022-07-21 05:03:42,162 INFO L87 Difference]: Start difference. First operand 68 states and 92 transitions. Second operand has 69 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 42 states have internal predecessors, (93), 14 states have call successors, (14), 1 states have call predecessors, (14), 20 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2022-07-21 05:03:43,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:43,712 INFO L93 Difference]: Finished difference Result 88 states and 116 transitions. [2022-07-21 05:03:43,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 05:03:43,712 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 42 states have internal predecessors, (93), 14 states have call successors, (14), 1 states have call predecessors, (14), 20 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) Word has length 76 [2022-07-21 05:03:43,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:43,713 INFO L225 Difference]: With dead ends: 88 [2022-07-21 05:03:43,713 INFO L226 Difference]: Without dead ends: 82 [2022-07-21 05:03:43,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 121 SyntacticMatches, 10 SemanticMatches, 90 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1932 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=653, Invalid=7540, Unknown=1, NotChecked=178, Total=8372 [2022-07-21 05:03:43,715 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:43,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 575 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1750 Invalid, 0 Unknown, 56 Unchecked, 0.8s Time] [2022-07-21 05:03:43,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-07-21 05:03:43,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2022-07-21 05:03:43,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.08) internal successors, (54), 51 states have internal predecessors, (54), 9 states have call successors, (9), 4 states have call predecessors, (9), 14 states have return successors, (36), 18 states have call predecessors, (36), 9 states have call successors, (36) [2022-07-21 05:03:43,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 99 transitions. [2022-07-21 05:03:43,722 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 99 transitions. Word has length 76 [2022-07-21 05:03:43,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:43,722 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 99 transitions. [2022-07-21 05:03:43,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 42 states have internal predecessors, (93), 14 states have call successors, (14), 1 states have call predecessors, (14), 20 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2022-07-21 05:03:43,723 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 99 transitions. [2022-07-21 05:03:43,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 05:03:43,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:43,723 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:43,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:43,956 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 [2022-07-21 05:03:43,956 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:43,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1821652060, now seen corresponding path program 8 times [2022-07-21 05:03:43,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:43,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388583200] [2022-07-21 05:03:43,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:43,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:44,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:44,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 05:03:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:44,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:44,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 93 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-21 05:03:44,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:44,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388583200] [2022-07-21 05:03:44,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388583200] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:44,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456794446] [2022-07-21 05:03:44,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 05:03:44,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:44,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:44,388 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:03:44,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 05:03:44,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 05:03:44,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:44,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 97 conjunts are in the unsatisfiable core [2022-07-21 05:03:44,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:45,020 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 2 proven. 85 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-21 05:03:45,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 118 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-21 05:03:46,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456794446] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:46,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:46,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 21] total 51 [2022-07-21 05:03:46,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305692237] [2022-07-21 05:03:46,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:46,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-21 05:03:46,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:46,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-21 05:03:46,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2369, Unknown=0, NotChecked=0, Total=2550 [2022-07-21 05:03:46,383 INFO L87 Difference]: Start difference. First operand 74 states and 99 transitions. Second operand has 51 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 32 states have internal predecessors, (66), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (20), 19 states have call predecessors, (20), 10 states have call successors, (20) [2022-07-21 05:03:47,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:47,586 INFO L93 Difference]: Finished difference Result 96 states and 130 transitions. [2022-07-21 05:03:47,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-21 05:03:47,586 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 32 states have internal predecessors, (66), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (20), 19 states have call predecessors, (20), 10 states have call successors, (20) Word has length 62 [2022-07-21 05:03:47,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:47,587 INFO L225 Difference]: With dead ends: 96 [2022-07-21 05:03:47,587 INFO L226 Difference]: Without dead ends: 88 [2022-07-21 05:03:47,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 103 SyntacticMatches, 10 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=457, Invalid=4655, Unknown=0, NotChecked=0, Total=5112 [2022-07-21 05:03:47,589 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:47,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 473 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:03:47,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-21 05:03:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 74. [2022-07-21 05:03:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.08) internal successors, (54), 51 states have internal predecessors, (54), 9 states have call successors, (9), 4 states have call predecessors, (9), 14 states have return successors, (35), 18 states have call predecessors, (35), 9 states have call successors, (35) [2022-07-21 05:03:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2022-07-21 05:03:47,600 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 62 [2022-07-21 05:03:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:47,600 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2022-07-21 05:03:47,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 32 states have internal predecessors, (66), 10 states have call successors, (10), 1 states have call predecessors, (10), 14 states have return successors, (20), 19 states have call predecessors, (20), 10 states have call successors, (20) [2022-07-21 05:03:47,600 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2022-07-21 05:03:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 05:03:47,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:47,601 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:47,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:47,808 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 [2022-07-21 05:03:47,808 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:47,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:47,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1119099064, now seen corresponding path program 9 times [2022-07-21 05:03:47,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:47,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541354847] [2022-07-21 05:03:47,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:47,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:47,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:47,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:03:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:48,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:48,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:48,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:48,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:48,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:48,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:48,541 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 178 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-21 05:03:48,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:48,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541354847] [2022-07-21 05:03:48,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541354847] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:48,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485995816] [2022-07-21 05:03:48,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 05:03:48,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:48,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:48,543 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:03:48,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 05:03:48,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-07-21 05:03:48,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:48,628 WARN L261 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 132 conjunts are in the unsatisfiable core [2022-07-21 05:03:48,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 20 proven. 174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-07-21 05:03:49,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:55,000 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_135| Int) (|aux_div_v_mult_#in~n_BEFORE_CALL_88_90| Int) (v_mult_~n_BEFORE_CALL_88 Int) (|aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109| Int) (|aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_135| Int)) (let ((.cse1 (+ |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_135| (* 7 |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_135|))) (.cse0 (div (+ (* (- 2) |c_mult_#res|) (* |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_135| 2) (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_135| 14) (* (- 2) v_mult_~n_BEFORE_CALL_88)) 7)) (.cse2 (div (+ (* (- 14) |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_135|) (* 2 |c_mult_#res|) (* |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_135| (- 2)) (* 2 v_mult_~n_BEFORE_CALL_88)) (- 7)))) (or (<= .cse0 |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_135|) (< (+ (* |aux_div_v_mult_#in~n_BEFORE_CALL_88_90| 7) |c_mult_#res|) .cse1) (< |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109| .cse0) (< |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_135| 0) (< .cse2 |aux_div_v_mult_#in~n_BEFORE_CALL_88_90|) (< .cse1 (+ (* 7 |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109|) |c_mult_#res|)) (<= 7 |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_135|) (< .cse0 .cse2)))) (<= |c_mult_#in~m| 0) (forall ((|aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_163| Int) (|aux_div_v_mult_#in~n_BEFORE_CALL_88_90| Int) (v_mult_~n_BEFORE_CALL_88 Int) (|aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_163| Int) (|aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109| Int)) (let ((.cse4 (div (+ (* 2 |c_mult_#res|) (* |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_163| 2) (* (- 14) |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_163|) (* 2 v_mult_~n_BEFORE_CALL_88)) (- 7))) (.cse5 (* 7 |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_163|)) (.cse3 (div (+ (* (- 2) |c_mult_#res|) (* |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_163| 14) (* (- 2) v_mult_~n_BEFORE_CALL_88) (* |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_163| (- 2))) 7))) (or (< .cse3 .cse4) (< .cse4 |aux_div_v_mult_#in~n_BEFORE_CALL_88_90|) (<= |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_163| .cse4) (< .cse5 (+ (* 7 |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109|) |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_163| |c_mult_#res|)) (< (+ |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_163| (* |aux_div_v_mult_#in~n_BEFORE_CALL_88_90| 7) |c_mult_#res|) .cse5) (< |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_163| 0) (< |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109| .cse3) (<= 7 |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_88_90_109_163|))))) is different from false [2022-07-21 05:03:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 31 proven. 241 refuted. 0 times theorem prover too weak. 55 trivial. 20 not checked. [2022-07-21 05:03:55,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485995816] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:55,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:55,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28, 40] total 80 [2022-07-21 05:03:55,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026669414] [2022-07-21 05:03:55,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:55,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-07-21 05:03:55,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:55,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-07-21 05:03:55,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=5856, Unknown=1, NotChecked=154, Total=6320 [2022-07-21 05:03:55,352 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand has 80 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 50 states have internal predecessors, (107), 15 states have call successors, (15), 1 states have call predecessors, (15), 23 states have return successors, (32), 30 states have call predecessors, (32), 15 states have call successors, (32) [2022-07-21 05:03:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:57,064 INFO L93 Difference]: Finished difference Result 100 states and 134 transitions. [2022-07-21 05:03:57,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-21 05:03:57,064 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 50 states have internal predecessors, (107), 15 states have call successors, (15), 1 states have call predecessors, (15), 23 states have return successors, (32), 30 states have call predecessors, (32), 15 states have call successors, (32) Word has length 83 [2022-07-21 05:03:57,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:57,065 INFO L225 Difference]: With dead ends: 100 [2022-07-21 05:03:57,065 INFO L226 Difference]: Without dead ends: 94 [2022-07-21 05:03:57,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 124 SyntacticMatches, 14 SemanticMatches, 103 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2575 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=849, Invalid=9866, Unknown=1, NotChecked=204, Total=10920 [2022-07-21 05:03:57,066 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 46 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:57,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 694 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2062 Invalid, 0 Unknown, 55 Unchecked, 0.9s Time] [2022-07-21 05:03:57,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-07-21 05:03:57,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2022-07-21 05:03:57,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 55 states have internal predecessors, (58), 9 states have call successors, (9), 4 states have call predecessors, (9), 16 states have return successors, (38), 20 states have call predecessors, (38), 9 states have call successors, (38) [2022-07-21 05:03:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2022-07-21 05:03:57,079 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 83 [2022-07-21 05:03:57,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:57,079 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions. [2022-07-21 05:03:57,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 50 states have internal predecessors, (107), 15 states have call successors, (15), 1 states have call predecessors, (15), 23 states have return successors, (32), 30 states have call predecessors, (32), 15 states have call successors, (32) [2022-07-21 05:03:57,080 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2022-07-21 05:03:57,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 05:03:57,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:57,082 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:57,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:57,299 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 [2022-07-21 05:03:57,299 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:57,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:57,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1108033402, now seen corresponding path program 10 times [2022-07-21 05:03:57,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:57,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140221693] [2022-07-21 05:03:57,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:57,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:57,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:57,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:57,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:57,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:57,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:03:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:57,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:57,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:57,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 30 proven. 180 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-21 05:03:57,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:57,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140221693] [2022-07-21 05:03:57,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140221693] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:57,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233602364] [2022-07-21 05:03:57,905 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 05:03:57,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:57,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:57,907 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:03:57,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 05:03:57,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 05:03:57,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:57,994 WARN L261 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 133 conjunts are in the unsatisfiable core [2022-07-21 05:03:57,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-07-21 05:03:58,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:04:13,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233602364] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:04:13,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 05:04:13,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20] total 46 [2022-07-21 05:04:13,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280495024] [2022-07-21 05:04:13,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 05:04:13,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-21 05:04:13,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:04:13,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-21 05:04:13,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=4169, Unknown=6, NotChecked=0, Total=4422 [2022-07-21 05:04:13,994 INFO L87 Difference]: Start difference. First operand 80 states and 105 transitions. Second operand has 46 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 28 states have internal predecessors, (53), 5 states have call successors, (5), 1 states have call predecessors, (5), 17 states have return successors, (18), 18 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-21 05:04:14,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:04:14,800 INFO L93 Difference]: Finished difference Result 90 states and 115 transitions. [2022-07-21 05:04:14,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 05:04:14,800 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 28 states have internal predecessors, (53), 5 states have call successors, (5), 1 states have call predecessors, (5), 17 states have return successors, (18), 18 states have call predecessors, (18), 5 states have call successors, (18) Word has length 83 [2022-07-21 05:04:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:04:14,802 INFO L225 Difference]: With dead ends: 90 [2022-07-21 05:04:14,802 INFO L226 Difference]: Without dead ends: 86 [2022-07-21 05:04:14,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 109 SyntacticMatches, 11 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=486, Invalid=5828, Unknown=6, NotChecked=0, Total=6320 [2022-07-21 05:04:14,804 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 22 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:04:14,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 396 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 05:04:14,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-21 05:04:14,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2022-07-21 05:04:14,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 10 states have call successors, (10), 4 states have call predecessors, (10), 16 states have return successors, (39), 21 states have call predecessors, (39), 10 states have call successors, (39) [2022-07-21 05:04:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 108 transitions. [2022-07-21 05:04:14,814 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 108 transitions. Word has length 83 [2022-07-21 05:04:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:04:14,814 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 108 transitions. [2022-07-21 05:04:14,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 28 states have internal predecessors, (53), 5 states have call successors, (5), 1 states have call predecessors, (5), 17 states have return successors, (18), 18 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-21 05:04:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 108 transitions. [2022-07-21 05:04:14,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 05:04:14,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:04:14,816 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:04:14,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 05:04:15,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 05:04:15,033 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:04:15,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:04:15,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1356577930, now seen corresponding path program 11 times [2022-07-21 05:04:15,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:04:15,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804197018] [2022-07-21 05:04:15,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:04:15,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:04:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:15,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:04:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:15,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:15,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:15,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:04:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:15,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:15,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:15,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:15,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-21 05:04:15,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:04:15,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804197018] [2022-07-21 05:04:15,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804197018] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:04:15,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948978668] [2022-07-21 05:04:15,570 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-21 05:04:15,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:04:15,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:04:15,572 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:04:15,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 05:04:15,642 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-07-21 05:04:15,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:04:15,644 WARN L261 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 109 conjunts are in the unsatisfiable core [2022-07-21 05:04:15,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:04:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 05:04:16,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:04:33,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948978668] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:04:33,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 05:04:33,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18] total 40 [2022-07-21 05:04:33,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249171833] [2022-07-21 05:04:33,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 05:04:33,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-21 05:04:33,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:04:33,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-21 05:04:33,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=3426, Unknown=8, NotChecked=0, Total=3660 [2022-07-21 05:04:33,201 INFO L87 Difference]: Start difference. First operand 82 states and 108 transitions. Second operand has 40 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 25 states have internal predecessors, (47), 5 states have call successors, (5), 1 states have call predecessors, (5), 14 states have return successors, (15), 15 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-21 05:04:33,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:04:33,847 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2022-07-21 05:04:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 05:04:33,848 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 25 states have internal predecessors, (47), 5 states have call successors, (5), 1 states have call predecessors, (5), 14 states have return successors, (15), 15 states have call predecessors, (15), 5 states have call successors, (15) Word has length 69 [2022-07-21 05:04:33,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:04:33,848 INFO L225 Difference]: With dead ends: 90 [2022-07-21 05:04:33,848 INFO L226 Difference]: Without dead ends: 86 [2022-07-21 05:04:33,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 95 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=425, Invalid=4679, Unknown=8, NotChecked=0, Total=5112 [2022-07-21 05:04:33,849 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:04:33,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 334 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:04:33,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-21 05:04:33,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2022-07-21 05:04:33,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 52 states have internal predecessors, (54), 8 states have call successors, (8), 3 states have call predecessors, (8), 16 states have return successors, (34), 20 states have call predecessors, (34), 8 states have call successors, (34) [2022-07-21 05:04:33,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2022-07-21 05:04:33,858 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 69 [2022-07-21 05:04:33,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:04:33,858 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2022-07-21 05:04:33,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 25 states have internal predecessors, (47), 5 states have call successors, (5), 1 states have call predecessors, (5), 14 states have return successors, (15), 15 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-21 05:04:33,859 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2022-07-21 05:04:33,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 05:04:33,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:04:33,862 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:04:33,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-21 05:04:34,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 05:04:34,067 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:04:34,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:04:34,067 INFO L85 PathProgramCache]: Analyzing trace with hash -43543002, now seen corresponding path program 12 times [2022-07-21 05:04:34,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:04:34,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868785836] [2022-07-21 05:04:34,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:04:34,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:04:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:04:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:04:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:35,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 48 proven. 336 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-07-21 05:04:35,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:04:35,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868785836] [2022-07-21 05:04:35,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868785836] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:04:35,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664544344] [2022-07-21 05:04:35,094 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-21 05:04:35,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:04:35,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:04:35,095 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:04:35,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 05:04:35,192 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2022-07-21 05:04:35,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:04:35,195 WARN L261 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 181 conjunts are in the unsatisfiable core [2022-07-21 05:04:35,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:04:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 8 proven. 315 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-07-21 05:04:36,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:04:53,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664544344] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:04:53,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 05:04:53,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 26] total 60 [2022-07-21 05:04:53,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344187286] [2022-07-21 05:04:53,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 05:04:53,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-07-21 05:04:53,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:04:53,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-07-21 05:04:53,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=7495, Unknown=7, NotChecked=0, Total=7832 [2022-07-21 05:04:53,535 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand has 60 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 35 states have internal predecessors, (67), 5 states have call successors, (5), 1 states have call predecessors, (5), 24 states have return successors, (25), 25 states have call predecessors, (25), 5 states have call successors, (25) [2022-07-21 05:04:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:04:55,083 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2022-07-21 05:04:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 05:04:55,083 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 35 states have internal predecessors, (67), 5 states have call successors, (5), 1 states have call predecessors, (5), 24 states have return successors, (25), 25 states have call predecessors, (25), 5 states have call successors, (25) Word has length 111 [2022-07-21 05:04:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:04:55,084 INFO L225 Difference]: With dead ends: 90 [2022-07-21 05:04:55,084 INFO L226 Difference]: Without dead ends: 86 [2022-07-21 05:04:55,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 156 SyntacticMatches, 14 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2517 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=757, Invalid=10792, Unknown=7, NotChecked=0, Total=11556 [2022-07-21 05:04:55,086 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:04:55,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 744 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 05:04:55,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-21 05:04:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2022-07-21 05:04:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 54 states have internal predecessors, (56), 8 states have call successors, (8), 3 states have call predecessors, (8), 17 states have return successors, (39), 21 states have call predecessors, (39), 8 states have call successors, (39) [2022-07-21 05:04:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 103 transitions. [2022-07-21 05:04:55,096 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 103 transitions. Word has length 111 [2022-07-21 05:04:55,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:04:55,097 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 103 transitions. [2022-07-21 05:04:55,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 35 states have internal predecessors, (67), 5 states have call successors, (5), 1 states have call predecessors, (5), 24 states have return successors, (25), 25 states have call predecessors, (25), 5 states have call successors, (25) [2022-07-21 05:04:55,097 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 103 transitions. [2022-07-21 05:04:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 05:04:55,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:04:55,098 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:04:55,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-21 05:04:55,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-21 05:04:55,318 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:04:55,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:04:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash -287264164, now seen corresponding path program 13 times [2022-07-21 05:04:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:04:55,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564743563] [2022-07-21 05:04:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:04:55,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:04:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:04:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:55,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:55,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:55,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:04:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:55,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:55,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:55,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:55,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:55,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:04:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 213 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-21 05:04:56,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:04:56,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564743563] [2022-07-21 05:04:56,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564743563] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:04:56,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430523144] [2022-07-21 05:04:56,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-21 05:04:56,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:04:56,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:04:56,011 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:04:56,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 05:04:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:04:56,101 WARN L261 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 145 conjunts are in the unsatisfiable core [2022-07-21 05:04:56,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:04:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 8 proven. 201 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-07-21 05:04:57,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:05:03,194 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_mult_#in~m| 0) (forall ((|aux_div_v_mult_#in~n_BEFORE_CALL_159_92| Int) (|aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111| Int) (v_mult_~n_BEFORE_CALL_159 Int) (|aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_165| Int) (|aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_165| Int)) (let ((.cse2 (div (+ (* (- 2) |c_mult_#res|) (* v_mult_~n_BEFORE_CALL_159 (- 2)) (* 16 |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_165|) (* (- 2) |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_165|)) 8)) (.cse0 (* 8 |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_165|)) (.cse1 (div (+ (* |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_165| 2) (* 2 |c_mult_#res|) (* (- 16) |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_165|) (* v_mult_~n_BEFORE_CALL_159 2)) (- 8)))) (or (<= 8 |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_165|) (< .cse0 (+ |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_165| (* |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111| 8) |c_mult_#res|)) (< .cse1 |aux_div_v_mult_#in~n_BEFORE_CALL_159_92|) (< .cse2 .cse1) (< |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111| .cse2) (< |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_165| 0) (< (+ |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_165| |c_mult_#res| (* 8 |aux_div_v_mult_#in~n_BEFORE_CALL_159_92|)) .cse0) (<= |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_165| .cse1)))) (forall ((|aux_div_v_mult_#in~n_BEFORE_CALL_159_92| Int) (|aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111| Int) (|aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_137| Int) (v_mult_~n_BEFORE_CALL_159 Int) (|aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_137| Int)) (let ((.cse4 (div (+ (* (- 16) |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_137|) (* 2 |c_mult_#res|) (* (- 2) |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_137|) (* v_mult_~n_BEFORE_CALL_159 2)) (- 8))) (.cse3 (div (+ (* (- 2) |c_mult_#res|) (* v_mult_~n_BEFORE_CALL_159 (- 2)) (* |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_137| 2) (* 16 |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_137|)) 8)) (.cse5 (+ |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_137| (* 8 |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_137|)))) (or (<= 8 |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_137|) (< |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111| .cse3) (< |aux_mod_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_137| 0) (< .cse3 .cse4) (< (+ |c_mult_#res| (* 8 |aux_div_v_mult_#in~n_BEFORE_CALL_159_92|)) .cse5) (< .cse4 |aux_div_v_mult_#in~n_BEFORE_CALL_159_92|) (<= .cse3 |aux_div_aux_mod_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111_137|) (< .cse5 (+ (* |aux_div_aux_mod_v_mult_#in~n_BEFORE_CALL_159_92_111| 8) |c_mult_#res|))))) (not (< |c_mult_#in~m| 0))) is different from false [2022-07-21 05:05:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 35 proven. 295 refuted. 0 times theorem prover too weak. 68 trivial. 22 not checked. [2022-07-21 05:05:03,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430523144] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:05:03,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:05:03,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26, 40] total 81 [2022-07-21 05:05:03,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218653484] [2022-07-21 05:05:03,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:05:03,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-07-21 05:05:03,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:05:03,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-07-21 05:05:03,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=6029, Unknown=1, NotChecked=156, Total=6480 [2022-07-21 05:05:03,364 INFO L87 Difference]: Start difference. First operand 79 states and 103 transitions. Second operand has 81 states, 77 states have (on average 1.4155844155844155) internal successors, (109), 48 states have internal predecessors, (109), 16 states have call successors, (16), 1 states have call predecessors, (16), 24 states have return successors, (34), 33 states have call predecessors, (34), 16 states have call successors, (34) [2022-07-21 05:05:05,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:05:05,121 INFO L93 Difference]: Finished difference Result 102 states and 130 transitions. [2022-07-21 05:05:05,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-21 05:05:05,121 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 77 states have (on average 1.4155844155844155) internal successors, (109), 48 states have internal predecessors, (109), 16 states have call successors, (16), 1 states have call predecessors, (16), 24 states have return successors, (34), 33 states have call predecessors, (34), 16 states have call successors, (34) Word has length 90 [2022-07-21 05:05:05,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:05:05,124 INFO L225 Difference]: With dead ends: 102 [2022-07-21 05:05:05,124 INFO L226 Difference]: Without dead ends: 96 [2022-07-21 05:05:05,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 141 SyntacticMatches, 14 SemanticMatches, 106 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2730 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=829, Invalid=10516, Unknown=1, NotChecked=210, Total=11556 [2022-07-21 05:05:05,127 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 78 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 2783 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:05:05,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 996 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2783 Invalid, 0 Unknown, 60 Unchecked, 1.0s Time] [2022-07-21 05:05:05,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-07-21 05:05:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 82. [2022-07-21 05:05:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 56 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 18 states have return successors, (37), 22 states have call predecessors, (37), 8 states have call successors, (37) [2022-07-21 05:05:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 103 transitions. [2022-07-21 05:05:05,143 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 103 transitions. Word has length 90 [2022-07-21 05:05:05,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:05:05,143 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 103 transitions. [2022-07-21 05:05:05,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 77 states have (on average 1.4155844155844155) internal successors, (109), 48 states have internal predecessors, (109), 16 states have call successors, (16), 1 states have call predecessors, (16), 24 states have return successors, (34), 33 states have call predecessors, (34), 16 states have call successors, (34) [2022-07-21 05:05:05,144 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 103 transitions. [2022-07-21 05:05:05,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-21 05:05:05,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:05:05,145 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:05:05,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 05:05:05,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:05:05,362 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:05:05,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:05:05,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1179471462, now seen corresponding path program 14 times [2022-07-21 05:05:05,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:05:05,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371590545] [2022-07-21 05:05:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:05:05,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:05:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:05,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:05:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:05,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:05,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 05:05:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:05,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:05,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:05,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:05,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 18 proven. 62 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 05:05:05,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:05:05,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371590545] [2022-07-21 05:05:05,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371590545] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:05:05,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241592331] [2022-07-21 05:05:05,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 05:05:05,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:05:05,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:05:05,716 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:05:05,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 05:05:05,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 05:05:05,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:05:05,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 81 conjunts are in the unsatisfiable core [2022-07-21 05:05:05,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:05:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 27 proven. 59 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 05:05:06,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:05:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 8 proven. 96 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 05:05:08,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241592331] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:05:08,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:05:08,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 26] total 63 [2022-07-21 05:05:08,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914092072] [2022-07-21 05:05:08,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:05:08,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-07-21 05:05:08,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:05:08,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-07-21 05:05:08,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=3657, Unknown=0, NotChecked=0, Total=3906 [2022-07-21 05:05:08,267 INFO L87 Difference]: Start difference. First operand 82 states and 103 transitions. Second operand has 63 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 42 states have internal predecessors, (86), 12 states have call successors, (12), 1 states have call predecessors, (12), 19 states have return successors, (21), 21 states have call predecessors, (21), 12 states have call successors, (21) [2022-07-21 05:05:09,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:05:09,706 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2022-07-21 05:05:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 05:05:09,707 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 42 states have internal predecessors, (86), 12 states have call successors, (12), 1 states have call predecessors, (12), 19 states have return successors, (21), 21 states have call predecessors, (21), 12 states have call successors, (21) Word has length 55 [2022-07-21 05:05:09,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:05:09,707 INFO L225 Difference]: With dead ends: 94 [2022-07-21 05:05:09,708 INFO L226 Difference]: Without dead ends: 90 [2022-07-21 05:05:09,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=711, Invalid=6429, Unknown=0, NotChecked=0, Total=7140 [2022-07-21 05:05:09,708 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 54 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:05:09,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 529 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:05:09,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-21 05:05:09,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-07-21 05:05:09,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 56 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 18 states have return successors, (36), 22 states have call predecessors, (36), 8 states have call successors, (36) [2022-07-21 05:05:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2022-07-21 05:05:09,715 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 55 [2022-07-21 05:05:09,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:05:09,715 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2022-07-21 05:05:09,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 42 states have internal predecessors, (86), 12 states have call successors, (12), 1 states have call predecessors, (12), 19 states have return successors, (21), 21 states have call predecessors, (21), 12 states have call successors, (21) [2022-07-21 05:05:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2022-07-21 05:05:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 05:05:09,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:05:09,716 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:05:09,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 05:05:09,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-21 05:05:09,926 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:05:09,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:05:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1533046684, now seen corresponding path program 15 times [2022-07-21 05:05:09,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:05:09,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552930252] [2022-07-21 05:05:09,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:05:09,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:05:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:09,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:05:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:10,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:10,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:10,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:10,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:10,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:10,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:10,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 05:05:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:10,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 34 proven. 215 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-21 05:05:10,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:05:10,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552930252] [2022-07-21 05:05:10,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552930252] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:05:10,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949801521] [2022-07-21 05:05:10,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 05:05:10,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:05:10,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:05:10,626 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:05:10,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 05:05:10,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-07-21 05:05:10,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:05:10,724 WARN L261 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 145 conjunts are in the unsatisfiable core [2022-07-21 05:05:10,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:05:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 9 proven. 195 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-21 05:05:11,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:05:30,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949801521] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:05:30,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 05:05:30,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 22] total 50 [2022-07-21 05:05:30,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675800428] [2022-07-21 05:05:30,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 05:05:30,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-21 05:05:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:05:30,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-21 05:05:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=4704, Unknown=7, NotChecked=0, Total=4970 [2022-07-21 05:05:30,145 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand has 50 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 30 states have internal predecessors, (58), 5 states have call successors, (5), 1 states have call predecessors, (5), 19 states have return successors, (20), 20 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-21 05:05:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:05:31,141 INFO L93 Difference]: Finished difference Result 92 states and 112 transitions. [2022-07-21 05:05:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 05:05:31,141 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 30 states have internal predecessors, (58), 5 states have call successors, (5), 1 states have call predecessors, (5), 19 states have return successors, (20), 20 states have call predecessors, (20), 5 states have call successors, (20) Word has length 90 [2022-07-21 05:05:31,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:05:31,142 INFO L225 Difference]: With dead ends: 92 [2022-07-21 05:05:31,142 INFO L226 Difference]: Without dead ends: 88 [2022-07-21 05:05:31,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 116 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=536, Invalid=6767, Unknown=7, NotChecked=0, Total=7310 [2022-07-21 05:05:31,143 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:05:31,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 635 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:05:31,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-21 05:05:31,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2022-07-21 05:05:31,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 56 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 18 states have return successors, (36), 22 states have call predecessors, (36), 8 states have call successors, (36) [2022-07-21 05:05:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2022-07-21 05:05:31,160 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 90 [2022-07-21 05:05:31,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:05:31,161 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2022-07-21 05:05:31,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 30 states have internal predecessors, (58), 5 states have call successors, (5), 1 states have call predecessors, (5), 19 states have return successors, (20), 20 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-21 05:05:31,161 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2022-07-21 05:05:31,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 05:05:31,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:05:31,162 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:05:31,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 05:05:31,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-21 05:05:31,364 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:05:31,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:05:31,365 INFO L85 PathProgramCache]: Analyzing trace with hash 960528734, now seen corresponding path program 16 times [2022-07-21 05:05:31,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:05:31,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047955117] [2022-07-21 05:05:31,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:05:31,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:05:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:05:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:31,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:31,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:31,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:31,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:05:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:31,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:31,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:31,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:32,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:32,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:32,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:32,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 52 proven. 383 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-21 05:05:32,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:05:32,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047955117] [2022-07-21 05:05:32,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047955117] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:05:32,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464226519] [2022-07-21 05:05:32,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 05:05:32,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:05:32,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:05:32,452 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:05:32,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 05:05:32,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 05:05:32,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:05:32,567 WARN L261 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 193 conjunts are in the unsatisfiable core [2022-07-21 05:05:32,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:05:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 9 proven. 361 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2022-07-21 05:05:33,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:05:51,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464226519] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:05:51,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 05:05:51,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 28] total 64 [2022-07-21 05:05:51,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502756219] [2022-07-21 05:05:51,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 05:05:51,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-07-21 05:05:51,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:05:51,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-07-21 05:05:51,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=8571, Unknown=7, NotChecked=0, Total=8930 [2022-07-21 05:05:51,752 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand has 64 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 37 states have internal predecessors, (71), 5 states have call successors, (5), 1 states have call predecessors, (5), 26 states have return successors, (27), 27 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-21 05:05:53,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:05:53,497 INFO L93 Difference]: Finished difference Result 98 states and 124 transitions. [2022-07-21 05:05:53,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 05:05:53,498 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 37 states have internal predecessors, (71), 5 states have call successors, (5), 1 states have call predecessors, (5), 26 states have return successors, (27), 27 states have call predecessors, (27), 5 states have call successors, (27) Word has length 118 [2022-07-21 05:05:53,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:05:53,499 INFO L225 Difference]: With dead ends: 98 [2022-07-21 05:05:53,499 INFO L226 Difference]: Without dead ends: 94 [2022-07-21 05:05:53,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 168 SyntacticMatches, 14 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2914 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=845, Invalid=12488, Unknown=7, NotChecked=0, Total=13340 [2022-07-21 05:05:53,500 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:05:53,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 938 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 05:05:53,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-07-21 05:05:53,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2022-07-21 05:05:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 59 states have internal predecessors, (61), 9 states have call successors, (9), 3 states have call predecessors, (9), 19 states have return successors, (43), 24 states have call predecessors, (43), 9 states have call successors, (43) [2022-07-21 05:05:53,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2022-07-21 05:05:53,519 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 118 [2022-07-21 05:05:53,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:05:53,519 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2022-07-21 05:05:53,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 37 states have internal predecessors, (71), 5 states have call successors, (5), 1 states have call predecessors, (5), 26 states have return successors, (27), 27 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-21 05:05:53,519 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2022-07-21 05:05:53,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-21 05:05:53,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:05:53,520 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:05:53,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-21 05:05:53,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:05:53,729 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:05:53,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:05:53,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1089292936, now seen corresponding path program 17 times [2022-07-21 05:05:53,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:05:53,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714200003] [2022-07-21 05:05:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:05:53,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:05:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:53,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:05:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:53,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:53,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:53,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:53,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:54,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 05:05:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:54,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:54,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:54,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:54,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:54,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:54,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:54,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:54,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:05:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:05:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 56 proven. 433 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2022-07-21 05:05:54,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:05:54,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714200003] [2022-07-21 05:05:54,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714200003] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:05:54,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146463178] [2022-07-21 05:05:54,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-21 05:05:54,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:05:54,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:05:54,845 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:05:54,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-21 05:05:54,980 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2022-07-21 05:05:54,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:05:54,983 WARN L261 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 205 conjunts are in the unsatisfiable core [2022-07-21 05:05:54,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:05:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 9 proven. 408 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2022-07-21 05:05:56,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:06:18,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146463178] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:06:18,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 05:06:18,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 28] total 66 [2022-07-21 05:06:18,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473525486] [2022-07-21 05:06:18,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 05:06:18,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-07-21 05:06:18,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:06:18,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-07-21 05:06:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=8944, Unknown=8, NotChecked=0, Total=9312 [2022-07-21 05:06:18,507 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand has 66 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 38 states have internal predecessors, (73), 5 states have call successors, (5), 1 states have call predecessors, (5), 27 states have return successors, (28), 28 states have call predecessors, (28), 5 states have call successors, (28) [2022-07-21 05:06:20,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:06:20,032 INFO L93 Difference]: Finished difference Result 98 states and 123 transitions. [2022-07-21 05:06:20,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 05:06:20,033 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 38 states have internal predecessors, (73), 5 states have call successors, (5), 1 states have call predecessors, (5), 27 states have return successors, (28), 28 states have call predecessors, (28), 5 states have call successors, (28) Word has length 125 [2022-07-21 05:06:20,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:06:20,038 INFO L225 Difference]: With dead ends: 98 [2022-07-21 05:06:20,038 INFO L226 Difference]: Without dead ends: 94 [2022-07-21 05:06:20,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 171 SyntacticMatches, 20 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3040 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=855, Invalid=12943, Unknown=8, NotChecked=0, Total=13806 [2022-07-21 05:06:20,045 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 44 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:06:20,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 747 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 05:06:20,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-07-21 05:06:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2022-07-21 05:06:20,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 58 states have internal predecessors, (60), 8 states have call successors, (8), 3 states have call predecessors, (8), 19 states have return successors, (41), 23 states have call predecessors, (41), 8 states have call successors, (41) [2022-07-21 05:06:20,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2022-07-21 05:06:20,075 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 125 [2022-07-21 05:06:20,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:06:20,075 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2022-07-21 05:06:20,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 38 states have internal predecessors, (73), 5 states have call successors, (5), 1 states have call predecessors, (5), 27 states have return successors, (28), 28 states have call predecessors, (28), 5 states have call successors, (28) [2022-07-21 05:06:20,076 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2022-07-21 05:06:20,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 05:06:20,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:06:20,076 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:06:20,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-21 05:06:20,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:06:20,277 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:06:20,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:06:20,277 INFO L85 PathProgramCache]: Analyzing trace with hash -401646488, now seen corresponding path program 18 times [2022-07-21 05:06:20,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:06:20,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579537952] [2022-07-21 05:06:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:06:20,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:06:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:20,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:06:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:20,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:20,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:06:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:20,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:20,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:20,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:20,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:20,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:20,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:20,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:20,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:21,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 40 proven. 251 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-21 05:06:21,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:06:21,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579537952] [2022-07-21 05:06:21,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579537952] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:06:21,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810700359] [2022-07-21 05:06:21,091 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-21 05:06:21,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:06:21,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:06:21,093 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:06:21,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-21 05:06:21,222 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2022-07-21 05:06:21,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:06:21,224 WARN L261 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 157 conjunts are in the unsatisfiable core [2022-07-21 05:06:21,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:06:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 18 proven. 229 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-21 05:06:22,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:06:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 38 proven. 380 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-21 05:06:25,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810700359] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:06:25,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:06:25,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 27, 41] total 84 [2022-07-21 05:06:25,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225271629] [2022-07-21 05:06:25,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:06:25,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-07-21 05:06:25,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:06:25,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-07-21 05:06:25,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=6671, Unknown=0, NotChecked=0, Total=6972 [2022-07-21 05:06:25,247 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand has 84 states, 80 states have (on average 1.425) internal successors, (114), 48 states have internal predecessors, (114), 17 states have call successors, (17), 1 states have call predecessors, (17), 25 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) [2022-07-21 05:06:26,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:06:26,809 INFO L93 Difference]: Finished difference Result 108 states and 136 transitions. [2022-07-21 05:06:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-21 05:06:26,809 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 80 states have (on average 1.425) internal successors, (114), 48 states have internal predecessors, (114), 17 states have call successors, (17), 1 states have call predecessors, (17), 25 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) Word has length 97 [2022-07-21 05:06:26,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:06:26,810 INFO L225 Difference]: With dead ends: 108 [2022-07-21 05:06:26,810 INFO L226 Difference]: Without dead ends: 102 [2022-07-21 05:06:26,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 156 SyntacticMatches, 14 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2963 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=864, Invalid=11792, Unknown=0, NotChecked=0, Total=12656 [2022-07-21 05:06:26,811 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 55 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 2838 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:06:26,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 966 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2838 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 05:06:26,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-21 05:06:26,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 88. [2022-07-21 05:06:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 60 states have internal predecessors, (62), 8 states have call successors, (8), 3 states have call predecessors, (8), 20 states have return successors, (39), 24 states have call predecessors, (39), 8 states have call successors, (39) [2022-07-21 05:06:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2022-07-21 05:06:26,826 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 97 [2022-07-21 05:06:26,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:06:26,827 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2022-07-21 05:06:26,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 80 states have (on average 1.425) internal successors, (114), 48 states have internal predecessors, (114), 17 states have call successors, (17), 1 states have call predecessors, (17), 25 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) [2022-07-21 05:06:26,827 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2022-07-21 05:06:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 05:06:26,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:06:26,828 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:06:26,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-21 05:06:27,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:06:27,038 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:06:27,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:06:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash -14301802, now seen corresponding path program 19 times [2022-07-21 05:06:27,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:06:27,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089132145] [2022-07-21 05:06:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:06:27,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:06:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:06:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 05:06:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 38 proven. 253 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-21 05:06:27,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:06:27,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089132145] [2022-07-21 05:06:27,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089132145] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:06:27,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646005165] [2022-07-21 05:06:27,852 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-21 05:06:27,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:06:27,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:06:27,862 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:06:27,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-21 05:06:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:28,007 WARN L261 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 157 conjunts are in the unsatisfiable core [2022-07-21 05:06:28,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:06:29,052 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 4 proven. 237 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-07-21 05:06:29,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:06:47,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646005165] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:06:47,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 05:06:47,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 24] total 54 [2022-07-21 05:06:47,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088349916] [2022-07-21 05:06:47,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 05:06:47,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-07-21 05:06:47,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:06:47,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-07-21 05:06:47,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=5272, Unknown=7, NotChecked=0, Total=5550 [2022-07-21 05:06:47,658 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand has 54 states, 51 states have (on average 1.196078431372549) internal successors, (61), 32 states have internal predecessors, (61), 5 states have call successors, (5), 1 states have call predecessors, (5), 21 states have return successors, (22), 22 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-21 05:06:48,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:06:48,882 INFO L93 Difference]: Finished difference Result 98 states and 119 transitions. [2022-07-21 05:06:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 05:06:48,883 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 51 states have (on average 1.196078431372549) internal successors, (61), 32 states have internal predecessors, (61), 5 states have call successors, (5), 1 states have call predecessors, (5), 21 states have return successors, (22), 22 states have call predecessors, (22), 5 states have call successors, (22) Word has length 97 [2022-07-21 05:06:48,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:06:48,883 INFO L225 Difference]: With dead ends: 98 [2022-07-21 05:06:48,883 INFO L226 Difference]: Without dead ends: 94 [2022-07-21 05:06:48,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 126 SyntacticMatches, 8 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1705 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=586, Invalid=7779, Unknown=7, NotChecked=0, Total=8372 [2022-07-21 05:06:48,884 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:06:48,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 600 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:06:48,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-07-21 05:06:48,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2022-07-21 05:06:48,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 60 states have internal predecessors, (62), 8 states have call successors, (8), 3 states have call predecessors, (8), 20 states have return successors, (39), 24 states have call predecessors, (39), 8 states have call successors, (39) [2022-07-21 05:06:48,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2022-07-21 05:06:48,890 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 97 [2022-07-21 05:06:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:06:48,891 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2022-07-21 05:06:48,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 51 states have (on average 1.196078431372549) internal successors, (61), 32 states have internal predecessors, (61), 5 states have call successors, (5), 1 states have call predecessors, (5), 21 states have return successors, (22), 22 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-21 05:06:48,891 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2022-07-21 05:06:48,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-21 05:06:48,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:06:48,892 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:06:48,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-21 05:06:49,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-21 05:06:49,104 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:06:49,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:06:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1817590444, now seen corresponding path program 20 times [2022-07-21 05:06:49,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:06:49,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057178874] [2022-07-21 05:06:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:06:49,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:06:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:06:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:06:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 44 proven. 292 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-07-21 05:06:49,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:06:49,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057178874] [2022-07-21 05:06:49,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057178874] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:06:49,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851518541] [2022-07-21 05:06:49,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 05:06:49,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:06:49,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:06:49,957 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:06:49,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-21 05:06:50,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 05:06:50,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:06:50,137 WARN L261 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 169 conjunts are in the unsatisfiable core [2022-07-21 05:06:50,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:06:51,112 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 10 proven. 278 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-07-21 05:06:51,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:06:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 41 proven. 451 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-21 05:06:54,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851518541] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:06:54,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:06:54,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 30, 45] total 92 [2022-07-21 05:06:54,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142125093] [2022-07-21 05:06:54,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:06:54,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-07-21 05:06:54,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:06:54,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-07-21 05:06:54,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=8036, Unknown=0, NotChecked=0, Total=8372 [2022-07-21 05:06:54,962 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand has 92 states, 88 states have (on average 1.3977272727272727) internal successors, (123), 53 states have internal predecessors, (123), 18 states have call successors, (18), 1 states have call predecessors, (18), 27 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) [2022-07-21 05:06:56,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:06:56,973 INFO L93 Difference]: Finished difference Result 114 states and 144 transitions. [2022-07-21 05:06:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-21 05:06:56,974 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 88 states have (on average 1.3977272727272727) internal successors, (123), 53 states have internal predecessors, (123), 18 states have call successors, (18), 1 states have call predecessors, (18), 27 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) Word has length 104 [2022-07-21 05:06:56,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:06:56,974 INFO L225 Difference]: With dead ends: 114 [2022-07-21 05:06:56,974 INFO L226 Difference]: Without dead ends: 108 [2022-07-21 05:06:56,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 166 SyntacticMatches, 14 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3599 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1019, Invalid=13987, Unknown=0, NotChecked=0, Total=15006 [2022-07-21 05:06:56,976 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 81 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 3110 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:06:56,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1048 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3110 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 05:06:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-07-21 05:06:56,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2022-07-21 05:06:56,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 64 states have internal predecessors, (66), 8 states have call successors, (8), 3 states have call predecessors, (8), 22 states have return successors, (42), 26 states have call predecessors, (42), 8 states have call successors, (42) [2022-07-21 05:06:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 116 transitions. [2022-07-21 05:06:56,983 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 116 transitions. Word has length 104 [2022-07-21 05:06:56,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:06:56,984 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 116 transitions. [2022-07-21 05:06:56,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 88 states have (on average 1.3977272727272727) internal successors, (123), 53 states have internal predecessors, (123), 18 states have call successors, (18), 1 states have call predecessors, (18), 27 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) [2022-07-21 05:06:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 116 transitions. [2022-07-21 05:06:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-21 05:06:56,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:06:56,985 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:06:57,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-21 05:06:57,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-21 05:06:57,202 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:06:57,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:06:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1254586740, now seen corresponding path program 21 times [2022-07-21 05:06:57,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:06:57,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573432168] [2022-07-21 05:06:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:06:57,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:06:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:57,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:06:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:57,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:57,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:57,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:57,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:57,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:57,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:57,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:06:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:57,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:57,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:06:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:06:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 42 proven. 294 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-07-21 05:06:58,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:06:58,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573432168] [2022-07-21 05:06:58,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573432168] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:06:58,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650237693] [2022-07-21 05:06:58,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 05:06:58,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:06:58,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:06:58,034 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:06:58,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-21 05:06:58,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-07-21 05:06:58,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:06:58,187 WARN L261 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 169 conjunts are in the unsatisfiable core [2022-07-21 05:06:58,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:06:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 9 proven. 274 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-07-21 05:06:59,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:07:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 15 proven. 454 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-21 05:07:02,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650237693] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:07:02,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:07:02,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 26, 33] total 79 [2022-07-21 05:07:02,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693811738] [2022-07-21 05:07:02,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:07:02,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-07-21 05:07:02,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:07:02,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-07-21 05:07:02,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=5873, Unknown=0, NotChecked=0, Total=6162 [2022-07-21 05:07:02,869 INFO L87 Difference]: Start difference. First operand 94 states and 116 transitions. Second operand has 79 states, 75 states have (on average 1.4) internal successors, (105), 46 states have internal predecessors, (105), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (34), 33 states have call predecessors, (34), 14 states have call successors, (34) [2022-07-21 05:07:04,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:07:04,127 INFO L93 Difference]: Finished difference Result 110 states and 145 transitions. [2022-07-21 05:07:04,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 05:07:04,128 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 75 states have (on average 1.4) internal successors, (105), 46 states have internal predecessors, (105), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (34), 33 states have call predecessors, (34), 14 states have call successors, (34) Word has length 104 [2022-07-21 05:07:04,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:07:04,142 INFO L225 Difference]: With dead ends: 110 [2022-07-21 05:07:04,142 INFO L226 Difference]: Without dead ends: 104 [2022-07-21 05:07:04,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 169 SyntacticMatches, 24 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2886 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=779, Invalid=10141, Unknown=0, NotChecked=0, Total=10920 [2022-07-21 05:07:04,153 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:07:04,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 599 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 05:07:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-07-21 05:07:04,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 92. [2022-07-21 05:07:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 63 states have internal predecessors, (65), 7 states have call successors, (7), 3 states have call predecessors, (7), 22 states have return successors, (40), 25 states have call predecessors, (40), 7 states have call successors, (40) [2022-07-21 05:07:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2022-07-21 05:07:04,168 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 104 [2022-07-21 05:07:04,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:07:04,169 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2022-07-21 05:07:04,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 75 states have (on average 1.4) internal successors, (105), 46 states have internal predecessors, (105), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (34), 33 states have call predecessors, (34), 14 states have call successors, (34) [2022-07-21 05:07:04,169 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2022-07-21 05:07:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-21 05:07:04,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:04,170 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:04,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-07-21 05:07:04,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:04,406 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:04,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash 657229454, now seen corresponding path program 22 times [2022-07-21 05:07:04,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:04,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69079018] [2022-07-21 05:07:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:04,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:04,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:07:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:04,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:04,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:04,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:04,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:04,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:07:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:04,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:04,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:04,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:05,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:05,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:05,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:05,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:05,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:05,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:05,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:05,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 60 proven. 486 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-07-21 05:07:05,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:05,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69079018] [2022-07-21 05:07:05,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69079018] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:07:05,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654326320] [2022-07-21 05:07:05,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 05:07:05,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:05,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:07:05,615 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:07:05,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-21 05:07:05,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 05:07:05,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:07:05,815 WARN L261 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 217 conjunts are in the unsatisfiable core [2022-07-21 05:07:05,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:07:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 11 proven. 462 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2022-07-21 05:07:07,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:07:29,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654326320] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:07:29,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 05:07:29,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 32] total 72 [2022-07-21 05:07:29,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339808175] [2022-07-21 05:07:29,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 05:07:29,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-07-21 05:07:29,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:07:29,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-07-21 05:07:29,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=10939, Unknown=7, NotChecked=0, Total=11342 [2022-07-21 05:07:29,051 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand has 72 states, 69 states have (on average 1.144927536231884) internal successors, (79), 41 states have internal predecessors, (79), 5 states have call successors, (5), 1 states have call predecessors, (5), 30 states have return successors, (31), 31 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-21 05:07:31,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:07:31,215 INFO L93 Difference]: Finished difference Result 108 states and 133 transitions. [2022-07-21 05:07:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 05:07:31,215 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 69 states have (on average 1.144927536231884) internal successors, (79), 41 states have internal predecessors, (79), 5 states have call successors, (5), 1 states have call predecessors, (5), 30 states have return successors, (31), 31 states have call predecessors, (31), 5 states have call successors, (31) Word has length 132 [2022-07-21 05:07:31,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:07:31,216 INFO L225 Difference]: With dead ends: 108 [2022-07-21 05:07:31,216 INFO L226 Difference]: Without dead ends: 104 [2022-07-21 05:07:31,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 190 SyntacticMatches, 16 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3818 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=1033, Invalid=16252, Unknown=7, NotChecked=0, Total=17292 [2022-07-21 05:07:31,218 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 37 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:07:31,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 918 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 05:07:31,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-07-21 05:07:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 97. [2022-07-21 05:07:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 66 states have internal predecessors, (68), 8 states have call successors, (8), 3 states have call predecessors, (8), 23 states have return successors, (46), 27 states have call predecessors, (46), 8 states have call successors, (46) [2022-07-21 05:07:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 122 transitions. [2022-07-21 05:07:31,225 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 122 transitions. Word has length 132 [2022-07-21 05:07:31,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:07:31,226 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 122 transitions. [2022-07-21 05:07:31,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 69 states have (on average 1.144927536231884) internal successors, (79), 41 states have internal predecessors, (79), 5 states have call successors, (5), 1 states have call predecessors, (5), 30 states have return successors, (31), 31 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-21 05:07:31,226 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 122 transitions. [2022-07-21 05:07:31,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:07:31,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:07:31,227 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:07:31,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-21 05:07:31,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:31,443 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:07:31,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:07:31,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1447362104, now seen corresponding path program 23 times [2022-07-21 05:07:31,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:07:31,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730305786] [2022-07-21 05:07:31,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:07:31,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:07:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:07:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:31,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:31,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:31,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:31,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:31,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 05:07:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:31,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:32,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:32,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:32,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:32,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:32,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:32,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:32,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:32,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:07:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:07:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 64 proven. 542 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2022-07-21 05:07:32,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:07:32,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730305786] [2022-07-21 05:07:32,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730305786] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:07:32,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771861701] [2022-07-21 05:07:32,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-21 05:07:32,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:07:32,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:07:32,937 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:07:32,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-21 05:07:33,150 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-07-21 05:07:33,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:07:33,154 WARN L261 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 229 conjunts are in the unsatisfiable core [2022-07-21 05:07:33,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:07:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 11 proven. 515 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2022-07-21 05:07:34,668 INFO L328 TraceCheckSpWp]: Computing backward predicates...