./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array24_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array24_pattern.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 b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 23:00:25,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 23:00:25,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 23:00:25,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 23:00:25,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 23:00:25,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 23:00:25,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 23:00:25,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 23:00:25,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 23:00:25,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 23:00:25,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 23:00:25,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 23:00:25,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 23:00:25,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 23:00:25,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 23:00:25,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 23:00:25,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 23:00:25,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 23:00:25,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 23:00:25,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 23:00:25,937 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 23:00:25,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 23:00:25,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 23:00:25,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 23:00:25,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 23:00:25,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 23:00:25,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 23:00:25,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 23:00:25,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 23:00:25,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 23:00:25,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 23:00:25,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 23:00:25,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 23:00:25,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 23:00:25,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 23:00:25,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 23:00:25,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 23:00:25,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 23:00:25,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 23:00:25,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 23:00:25,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 23:00:25,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 23:00:25,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 23:00:25,998 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 23:00:25,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 23:00:25,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 23:00:25,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 23:00:25,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 23:00:26,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 23:00:26,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 23:00:26,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 23:00:26,001 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 23:00:26,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 23:00:26,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 23:00:26,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 23:00:26,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 23:00:26,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 23:00:26,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 23:00:26,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 23:00:26,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 23:00:26,003 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 23:00:26,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 23:00:26,004 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 23:00:26,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 23:00:26,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 23:00:26,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 23:00:26,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 23:00:26,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:00:26,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 23:00:26,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 23:00:26,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 23:00:26,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 23:00:26,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 23:00:26,006 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 23:00:26,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 23:00:26,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 23:00:26,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 [2022-07-11 23:00:26,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 23:00:26,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 23:00:26,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 23:00:26,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 23:00:26,297 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 23:00:26,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array24_pattern.c [2022-07-11 23:00:26,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e744f7d1/c85a1bf3f331497aaca7ff7767812669/FLAG807ed4b5e [2022-07-11 23:00:26,783 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 23:00:26,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array24_pattern.c [2022-07-11 23:00:26,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e744f7d1/c85a1bf3f331497aaca7ff7767812669/FLAG807ed4b5e [2022-07-11 23:00:27,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e744f7d1/c85a1bf3f331497aaca7ff7767812669 [2022-07-11 23:00:27,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 23:00:27,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 23:00:27,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 23:00:27,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 23:00:27,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 23:00:27,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:00:27" (1/1) ... [2022-07-11 23:00:27,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c38cd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:00:27, skipping insertion in model container [2022-07-11 23:00:27,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:00:27" (1/1) ... [2022-07-11 23:00:27,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 23:00:27,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 23:00:27,374 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/array-patterns/array24_pattern.c[1359,1372] [2022-07-11 23:00:27,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:00:27,419 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 23:00:27,432 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/array-patterns/array24_pattern.c[1359,1372] [2022-07-11 23:00:27,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:00:27,474 INFO L208 MainTranslator]: Completed translation [2022-07-11 23:00:27,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:00:27 WrapperNode [2022-07-11 23:00:27,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 23:00:27,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 23:00:27,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 23:00:27,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 23:00:27,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:00:27" (1/1) ... [2022-07-11 23:00:27,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:00:27" (1/1) ... [2022-07-11 23:00:27,521 INFO L137 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2022-07-11 23:00:27,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 23:00:27,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 23:00:27,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 23:00:27,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 23:00:27,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:00:27" (1/1) ... [2022-07-11 23:00:27,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:00:27" (1/1) ... [2022-07-11 23:00:27,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:00:27" (1/1) ... [2022-07-11 23:00:27,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:00:27" (1/1) ... [2022-07-11 23:00:27,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:00:27" (1/1) ... [2022-07-11 23:00:27,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:00:27" (1/1) ... [2022-07-11 23:00:27,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:00:27" (1/1) ... [2022-07-11 23:00:27,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 23:00:27,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 23:00:27,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 23:00:27,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 23:00:27,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:00:27" (1/1) ... [2022-07-11 23:00:27,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:00:27,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:00:27,616 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) [2022-07-11 23:00:27,632 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 [2022-07-11 23:00:27,663 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2022-07-11 23:00:27,664 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2022-07-11 23:00:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 23:00:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-11 23:00:27,664 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-11 23:00:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 23:00:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-11 23:00:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 23:00:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 23:00:27,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 23:00:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 23:00:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-11 23:00:27,741 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 23:00:27,743 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 23:00:27,949 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 23:00:27,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 23:00:27,956 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-11 23:00:27,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:00:27 BoogieIcfgContainer [2022-07-11 23:00:27,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 23:00:27,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 23:00:27,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 23:00:27,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 23:00:27,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 11:00:27" (1/3) ... [2022-07-11 23:00:27,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26549f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:00:27, skipping insertion in model container [2022-07-11 23:00:27,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:00:27" (2/3) ... [2022-07-11 23:00:27,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26549f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:00:27, skipping insertion in model container [2022-07-11 23:00:27,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:00:27" (3/3) ... [2022-07-11 23:00:27,973 INFO L111 eAbstractionObserver]: Analyzing ICFG array24_pattern.c [2022-07-11 23:00:27,986 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 23:00:27,986 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 23:00:28,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 23:00:28,043 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@7c7d5010, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@18962f47 [2022-07-11 23:00:28,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 23:00:28,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-11 23:00:28,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-11 23:00:28,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:00:28,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:00:28,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:00:28,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:00:28,062 INFO L85 PathProgramCache]: Analyzing trace with hash 2136211159, now seen corresponding path program 1 times [2022-07-11 23:00:28,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:00:28,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169397964] [2022-07-11 23:00:28,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:28,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:00:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:00:28,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-11 23:00:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:00:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:00:28,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:00:28,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169397964] [2022-07-11 23:00:28,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169397964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:00:28,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:00:28,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-11 23:00:28,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383097368] [2022-07-11 23:00:28,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:00:28,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-11 23:00:28,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:00:28,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-11 23:00:28,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 23:00:28,297 INFO L87 Difference]: Start difference. First operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:00:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:00:28,319 INFO L93 Difference]: Finished difference Result 77 states and 115 transitions. [2022-07-11 23:00:28,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-11 23:00:28,322 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-11 23:00:28,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:00:28,328 INFO L225 Difference]: With dead ends: 77 [2022-07-11 23:00:28,328 INFO L226 Difference]: Without dead ends: 36 [2022-07-11 23:00:28,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 23:00:28,334 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:00:28,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:00:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-11 23:00:28,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-11 23:00:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-11 23:00:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2022-07-11 23:00:28,374 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 15 [2022-07-11 23:00:28,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:00:28,374 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2022-07-11 23:00:28,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:00:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2022-07-11 23:00:28,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-11 23:00:28,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:00:28,379 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:00:28,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 23:00:28,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:00:28,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:00:28,381 INFO L85 PathProgramCache]: Analyzing trace with hash -699940082, now seen corresponding path program 1 times [2022-07-11 23:00:28,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:00:28,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959320724] [2022-07-11 23:00:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:28,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:00:28,425 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:00:28,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321844638] [2022-07-11 23:00:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:28,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:28,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:00:28,429 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) [2022-07-11 23:00:28,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-11 23:00:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:00:28,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-11 23:00:28,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:00:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:00:28,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:00:28,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:00:28,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959320724] [2022-07-11 23:00:28,643 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:00:28,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321844638] [2022-07-11 23:00:28,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321844638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:00:28,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:00:28,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-11 23:00:28,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857041725] [2022-07-11 23:00:28,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:00:28,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-11 23:00:28,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:00:28,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-11 23:00:28,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-11 23:00:28,647 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-11 23:00:28,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:00:28,792 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2022-07-11 23:00:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 23:00:28,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-07-11 23:00:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:00:28,793 INFO L225 Difference]: With dead ends: 76 [2022-07-11 23:00:28,793 INFO L226 Difference]: Without dead ends: 48 [2022-07-11 23:00:28,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:00:28,795 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:00:28,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 92 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:00:28,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-11 23:00:28,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2022-07-11 23:00:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-11 23:00:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2022-07-11 23:00:28,805 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 35 [2022-07-11 23:00:28,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:00:28,805 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2022-07-11 23:00:28,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-11 23:00:28,806 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2022-07-11 23:00:28,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-11 23:00:28,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:00:28,807 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:00:28,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-11 23:00:29,027 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 [2022-07-11 23:00:29,028 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:00:29,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:00:29,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1308831759, now seen corresponding path program 1 times [2022-07-11 23:00:29,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:00:29,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69591084] [2022-07-11 23:00:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:29,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:00:29,043 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:00:29,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496539704] [2022-07-11 23:00:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:29,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:29,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:00:29,045 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) [2022-07-11 23:00:29,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-11 23:00:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:00:29,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-11 23:00:29,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:00:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-11 23:00:29,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:00:29,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:00:29,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69591084] [2022-07-11 23:00:29,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:00:29,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496539704] [2022-07-11 23:00:29,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496539704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:00:29,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:00:29,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:00:29,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471722718] [2022-07-11 23:00:29,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:00:29,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:00:29,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:00:29,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:00:29,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:00:29,129 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-11 23:00:29,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:00:29,171 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2022-07-11 23:00:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:00:29,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-07-11 23:00:29,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:00:29,172 INFO L225 Difference]: With dead ends: 79 [2022-07-11 23:00:29,172 INFO L226 Difference]: Without dead ends: 46 [2022-07-11 23:00:29,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:00:29,174 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:00:29,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 76 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:00:29,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-11 23:00:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2022-07-11 23:00:29,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-11 23:00:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-07-11 23:00:29,182 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 41 [2022-07-11 23:00:29,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:00:29,182 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-07-11 23:00:29,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-11 23:00:29,183 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-07-11 23:00:29,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-11 23:00:29,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:00:29,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:00:29,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-11 23:00:29,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-11 23:00:29,408 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:00:29,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:00:29,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1300942485, now seen corresponding path program 1 times [2022-07-11 23:00:29,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:00:29,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566668013] [2022-07-11 23:00:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:29,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:00:29,424 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:00:29,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475874535] [2022-07-11 23:00:29,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:29,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:29,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:00:29,432 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) [2022-07-11 23:00:29,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-11 23:00:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:00:29,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-11 23:00:29,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:00:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-11 23:00:29,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:00:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-11 23:00:29,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:00:29,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566668013] [2022-07-11 23:00:29,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:00:29,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475874535] [2022-07-11 23:00:29,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475874535] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:00:29,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:00:29,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-11 23:00:29,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536298539] [2022-07-11 23:00:29,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:00:29,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-11 23:00:29,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:00:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-11 23:00:29,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-07-11 23:00:29,725 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-11 23:00:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:00:29,949 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2022-07-11 23:00:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-11 23:00:29,950 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2022-07-11 23:00:29,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:00:29,951 INFO L225 Difference]: With dead ends: 85 [2022-07-11 23:00:29,951 INFO L226 Difference]: Without dead ends: 50 [2022-07-11 23:00:29,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2022-07-11 23:00:29,953 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 106 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:00:29,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 132 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:00:29,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-11 23:00:29,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-07-11 23:00:29,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-11 23:00:29,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2022-07-11 23:00:29,961 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 45 [2022-07-11 23:00:29,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:00:29,961 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2022-07-11 23:00:29,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-11 23:00:29,962 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2022-07-11 23:00:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-11 23:00:29,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:00:29,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:00:29,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-11 23:00:30,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:30,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:00:30,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:00:30,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1544610617, now seen corresponding path program 2 times [2022-07-11 23:00:30,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:00:30,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257378695] [2022-07-11 23:00:30,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:30,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:00:30,203 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:00:30,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170590556] [2022-07-11 23:00:30,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 23:00:30,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:30,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:00:30,211 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) [2022-07-11 23:00:30,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-11 23:00:30,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 23:00:30,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:00:30,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 23:00:30,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:00:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-11 23:00:30,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:00:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-11 23:00:30,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:00:30,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257378695] [2022-07-11 23:00:30,375 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:00:30,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170590556] [2022-07-11 23:00:30,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170590556] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:00:30,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:00:30,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-11 23:00:30,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375478535] [2022-07-11 23:00:30,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:00:30,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-11 23:00:30,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:00:30,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-11 23:00:30,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-11 23:00:30,377 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-11 23:00:30,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:00:30,556 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2022-07-11 23:00:30,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-11 23:00:30,562 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2022-07-11 23:00:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:00:30,566 INFO L225 Difference]: With dead ends: 106 [2022-07-11 23:00:30,566 INFO L226 Difference]: Without dead ends: 74 [2022-07-11 23:00:30,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-07-11 23:00:30,569 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 48 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:00:30,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 156 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:00:30,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-11 23:00:30,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2022-07-11 23:00:30,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-11 23:00:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2022-07-11 23:00:30,592 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 49 [2022-07-11 23:00:30,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:00:30,593 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2022-07-11 23:00:30,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-11 23:00:30,593 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2022-07-11 23:00:30,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-11 23:00:30,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:00:30,594 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:00:30,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-11 23:00:30,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:30,795 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:00:30,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:00:30,795 INFO L85 PathProgramCache]: Analyzing trace with hash -725408594, now seen corresponding path program 3 times [2022-07-11 23:00:30,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:00:30,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068998239] [2022-07-11 23:00:30,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:30,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:00:30,809 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:00:30,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023082746] [2022-07-11 23:00:30,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 23:00:30,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:30,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:00:30,811 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) [2022-07-11 23:00:30,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-11 23:00:31,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-11 23:00:31,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:00:31,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 76 conjunts are in the unsatisfiable core [2022-07-11 23:00:31,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:00:31,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2022-07-11 23:00:31,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-07-11 23:00:31,532 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-11 23:00:31,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 65 [2022-07-11 23:00:31,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:31,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:31,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:00:31,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 139 [2022-07-11 23:00:31,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 68 [2022-07-11 23:00:31,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:31,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:31,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:31,948 INFO L356 Elim1Store]: treesize reduction 82, result has 5.7 percent of original size [2022-07-11 23:00:31,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 145 [2022-07-11 23:00:32,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 142 [2022-07-11 23:00:32,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:32,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:32,396 INFO L356 Elim1Store]: treesize reduction 304, result has 14.4 percent of original size [2022-07-11 23:00:32,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 304 treesize of output 401 [2022-07-11 23:00:35,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 134 [2022-07-11 23:00:35,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:35,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:36,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:36,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:36,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:36,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:36,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:36,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:36,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:36,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:36,176 INFO L356 Elim1Store]: treesize reduction 312, result has 13.8 percent of original size [2022-07-11 23:00:36,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 74 treesize of output 80 [2022-07-11 23:00:37,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 139 [2022-07-11 23:00:37,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:00:37,989 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 23:00:37,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 83 treesize of output 121 [2022-07-11 23:00:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:00:39,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:00:54,967 WARN L233 SmtUtils]: Spent 11.69s on a formula simplification that was a NOOP. DAG size: 95 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-11 23:00:55,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:00:55,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068998239] [2022-07-11 23:00:55,370 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:00:55,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023082746] [2022-07-11 23:00:55,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023082746] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:00:55,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:00:55,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-07-11 23:00:55,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381779991] [2022-07-11 23:00:55,372 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-11 23:00:55,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-11 23:00:55,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:00:55,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-11 23:00:55,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2022-07-11 23:00:55,374 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 32 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-11 23:00:57,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:00:57,116 INFO L93 Difference]: Finished difference Result 113 states and 136 transitions. [2022-07-11 23:00:57,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-11 23:00:57,119 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 32 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 63 [2022-07-11 23:00:57,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:00:57,123 INFO L225 Difference]: With dead ends: 113 [2022-07-11 23:00:57,123 INFO L226 Difference]: Without dead ends: 109 [2022-07-11 23:00:57,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 31 SyntacticMatches, 11 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1517 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=591, Invalid=2715, Unknown=0, NotChecked=0, Total=3306 [2022-07-11 23:00:57,125 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 227 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:00:57,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 416 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 131 Invalid, 0 Unknown, 227 Unchecked, 0.3s Time] [2022-07-11 23:00:57,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-11 23:00:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-07-11 23:00:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 91 states have (on average 1.2087912087912087) internal successors, (110), 91 states have internal predecessors, (110), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-07-11 23:00:57,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2022-07-11 23:00:57,153 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 63 [2022-07-11 23:00:57,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:00:57,153 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2022-07-11 23:00:57,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 32 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-11 23:00:57,154 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2022-07-11 23:00:57,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-11 23:00:57,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:00:57,160 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:00:57,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-11 23:00:57,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:57,361 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:00:57,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:00:57,362 INFO L85 PathProgramCache]: Analyzing trace with hash -506553876, now seen corresponding path program 1 times [2022-07-11 23:00:57,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:00:57,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804978398] [2022-07-11 23:00:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:57,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:00:57,379 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:00:57,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992878365] [2022-07-11 23:00:57,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:57,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:57,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:00:57,385 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) [2022-07-11 23:00:57,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-11 23:00:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:00:57,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-11 23:00:57,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:00:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-11 23:00:57,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:00:57,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:00:57,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804978398] [2022-07-11 23:00:57,480 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:00:57,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992878365] [2022-07-11 23:00:57,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992878365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:00:57,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:00:57,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:00:57,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957267164] [2022-07-11 23:00:57,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:00:57,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:00:57,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:00:57,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:00:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:00:57,486 INFO L87 Difference]: Start difference. First operand 106 states and 129 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-11 23:00:57,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:00:57,507 INFO L93 Difference]: Finished difference Result 148 states and 181 transitions. [2022-07-11 23:00:57,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:00:57,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2022-07-11 23:00:57,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:00:57,509 INFO L225 Difference]: With dead ends: 148 [2022-07-11 23:00:57,509 INFO L226 Difference]: Without dead ends: 109 [2022-07-11 23:00:57,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:00:57,510 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:00:57,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 83 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:00:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-11 23:00:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2022-07-11 23:00:57,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 93 states have internal predecessors, (112), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-07-11 23:00:57,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2022-07-11 23:00:57,542 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 63 [2022-07-11 23:00:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:00:57,543 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2022-07-11 23:00:57,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-11 23:00:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2022-07-11 23:00:57,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-11 23:00:57,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:00:57,546 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:00:57,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-11 23:00:57,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:57,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:00:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:00:57,768 INFO L85 PathProgramCache]: Analyzing trace with hash 236205423, now seen corresponding path program 1 times [2022-07-11 23:00:57,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:00:57,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389299267] [2022-07-11 23:00:57,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:57,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:00:57,780 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:00:57,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064533158] [2022-07-11 23:00:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:57,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:57,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:00:57,782 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) [2022-07-11 23:00:57,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-11 23:00:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:00:57,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 23:00:57,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:00:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-11 23:00:57,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:00:57,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:00:57,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389299267] [2022-07-11 23:00:57,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:00:57,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064533158] [2022-07-11 23:00:57,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064533158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:00:57,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:00:57,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:00:57,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281833217] [2022-07-11 23:00:57,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:00:57,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:00:57,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:00:57,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:00:57,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:00:57,870 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-11 23:00:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:00:57,911 INFO L93 Difference]: Finished difference Result 158 states and 195 transitions. [2022-07-11 23:00:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:00:57,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2022-07-11 23:00:57,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:00:57,913 INFO L225 Difference]: With dead ends: 158 [2022-07-11 23:00:57,913 INFO L226 Difference]: Without dead ends: 118 [2022-07-11 23:00:57,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-11 23:00:57,914 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 5 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:00:57,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 190 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:00:57,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-11 23:00:57,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 112. [2022-07-11 23:00:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 96 states have internal predecessors, (115), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2022-07-11 23:00:57,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 137 transitions. [2022-07-11 23:00:57,929 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 137 transitions. Word has length 63 [2022-07-11 23:00:57,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:00:57,929 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 137 transitions. [2022-07-11 23:00:57,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-11 23:00:57,930 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 137 transitions. [2022-07-11 23:00:57,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-11 23:00:57,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:00:57,930 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:00:57,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-11 23:00:58,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:58,155 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:00:58,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:00:58,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1172698608, now seen corresponding path program 4 times [2022-07-11 23:00:58,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:00:58,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357144173] [2022-07-11 23:00:58,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:58,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:00:58,165 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:00:58,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853512411] [2022-07-11 23:00:58,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-11 23:00:58,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:58,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:00:58,167 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) [2022-07-11 23:00:58,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-11 23:00:58,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-11 23:00:58,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:00:58,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 23:00:58,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:00:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-11 23:00:58,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:00:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-11 23:00:58,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:00:58,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357144173] [2022-07-11 23:00:58,409 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:00:58,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853512411] [2022-07-11 23:00:58,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853512411] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:00:58,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:00:58,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-11 23:00:58,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463082425] [2022-07-11 23:00:58,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:00:58,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-11 23:00:58,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:00:58,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-11 23:00:58,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:00:58,411 INFO L87 Difference]: Start difference. First operand 112 states and 137 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-11 23:00:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:00:58,608 INFO L93 Difference]: Finished difference Result 250 states and 310 transitions. [2022-07-11 23:00:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-11 23:00:58,609 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-11 23:00:58,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:00:58,612 INFO L225 Difference]: With dead ends: 250 [2022-07-11 23:00:58,612 INFO L226 Difference]: Without dead ends: 199 [2022-07-11 23:00:58,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-11 23:00:58,613 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 217 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:00:58,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 154 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:00:58,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-11 23:00:58,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 159. [2022-07-11 23:00:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 136 states have internal predecessors, (161), 13 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (19), 15 states have call predecessors, (19), 13 states have call successors, (19) [2022-07-11 23:00:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 193 transitions. [2022-07-11 23:00:58,631 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 193 transitions. Word has length 65 [2022-07-11 23:00:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:00:58,632 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 193 transitions. [2022-07-11 23:00:58,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-11 23:00:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 193 transitions. [2022-07-11 23:00:58,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-11 23:00:58,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:00:58,633 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:00:58,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-11 23:00:58,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-11 23:00:58,840 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:00:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:00:58,840 INFO L85 PathProgramCache]: Analyzing trace with hash 785313200, now seen corresponding path program 5 times [2022-07-11 23:00:58,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:00:58,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626994155] [2022-07-11 23:00:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:58,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:00:58,859 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:00:58,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815853606] [2022-07-11 23:00:58,871 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-11 23:00:58,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:58,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:00:58,873 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) [2022-07-11 23:00:58,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-11 23:00:59,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-11 23:00:59,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:00:59,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 23:00:59,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:00:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-11 23:00:59,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:00:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-11 23:00:59,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:00:59,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626994155] [2022-07-11 23:00:59,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:00:59,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815853606] [2022-07-11 23:00:59,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815853606] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:00:59,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:00:59,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-11 23:00:59,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983706359] [2022-07-11 23:00:59,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:00:59,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-11 23:00:59,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:00:59,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-11 23:00:59,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:00:59,329 INFO L87 Difference]: Start difference. First operand 159 states and 193 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-11 23:00:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:00:59,581 INFO L93 Difference]: Finished difference Result 217 states and 258 transitions. [2022-07-11 23:00:59,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-11 23:00:59,581 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-11 23:00:59,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:00:59,582 INFO L225 Difference]: With dead ends: 217 [2022-07-11 23:00:59,583 INFO L226 Difference]: Without dead ends: 166 [2022-07-11 23:00:59,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-11 23:00:59,584 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 89 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:00:59,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 258 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:00:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-11 23:00:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 159. [2022-07-11 23:00:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 136 states have (on average 1.161764705882353) internal successors, (158), 136 states have internal predecessors, (158), 13 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (19), 15 states have call predecessors, (19), 13 states have call successors, (19) [2022-07-11 23:00:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2022-07-11 23:00:59,605 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 65 [2022-07-11 23:00:59,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:00:59,605 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2022-07-11 23:00:59,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-11 23:00:59,605 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2022-07-11 23:00:59,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-11 23:00:59,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:00:59,606 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:00:59,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-11 23:00:59,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-11 23:00:59,812 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:00:59,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:00:59,812 INFO L85 PathProgramCache]: Analyzing trace with hash -615703001, now seen corresponding path program 1 times [2022-07-11 23:00:59,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:00:59,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097273960] [2022-07-11 23:00:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:59,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:00:59,822 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:00:59,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126770309] [2022-07-11 23:00:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:00:59,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:00:59,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:00:59,824 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) [2022-07-11 23:00:59,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-11 23:00:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:00:59,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-11 23:00:59,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:00:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-11 23:00:59,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:00:59,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:00:59,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097273960] [2022-07-11 23:00:59,920 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:00:59,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126770309] [2022-07-11 23:00:59,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126770309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:00:59,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:00:59,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:00:59,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362969086] [2022-07-11 23:00:59,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:00:59,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:00:59,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:00:59,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:00:59,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:00:59,923 INFO L87 Difference]: Start difference. First operand 159 states and 190 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-11 23:00:59,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:00:59,961 INFO L93 Difference]: Finished difference Result 276 states and 329 transitions. [2022-07-11 23:00:59,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:00:59,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2022-07-11 23:00:59,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:00:59,964 INFO L225 Difference]: With dead ends: 276 [2022-07-11 23:00:59,964 INFO L226 Difference]: Without dead ends: 160 [2022-07-11 23:00:59,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-11 23:00:59,965 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 5 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:00:59,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 162 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:00:59,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-11 23:00:59,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2022-07-11 23:00:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 134 states have (on average 1.1343283582089552) internal successors, (152), 134 states have internal predecessors, (152), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (17), 14 states have call predecessors, (17), 12 states have call successors, (17) [2022-07-11 23:00:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 181 transitions. [2022-07-11 23:00:59,986 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 181 transitions. Word has length 69 [2022-07-11 23:00:59,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:00:59,987 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 181 transitions. [2022-07-11 23:00:59,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-11 23:00:59,987 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 181 transitions. [2022-07-11 23:00:59,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-11 23:00:59,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:00:59,992 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:01:00,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-11 23:01:00,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-11 23:01:00,217 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:01:00,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:01:00,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1276732650, now seen corresponding path program 1 times [2022-07-11 23:01:00,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:01:00,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132535589] [2022-07-11 23:01:00,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:01:00,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:01:00,230 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:01:00,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308411287] [2022-07-11 23:01:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:01:00,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:01:00,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:01:00,233 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) [2022-07-11 23:01:00,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-11 23:01:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:01:00,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-11 23:01:00,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:01:00,463 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-11 23:01:00,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:01:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-11 23:01:00,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:01:00,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132535589] [2022-07-11 23:01:00,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:01:00,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308411287] [2022-07-11 23:01:00,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308411287] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:01:00,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:01:00,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2022-07-11 23:01:00,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434808153] [2022-07-11 23:01:00,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:01:00,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-11 23:01:00,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:01:00,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-11 23:01:00,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-07-11 23:01:00,639 INFO L87 Difference]: Start difference. First operand 156 states and 181 transitions. Second operand has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 5 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2022-07-11 23:01:01,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:01:01,024 INFO L93 Difference]: Finished difference Result 215 states and 242 transitions. [2022-07-11 23:01:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-11 23:01:01,025 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 5 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 69 [2022-07-11 23:01:01,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:01:01,026 INFO L225 Difference]: With dead ends: 215 [2022-07-11 23:01:01,026 INFO L226 Difference]: Without dead ends: 169 [2022-07-11 23:01:01,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2022-07-11 23:01:01,028 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 73 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:01:01,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 236 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:01:01,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-11 23:01:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2022-07-11 23:01:01,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 137 states have (on average 1.1094890510948905) internal successors, (152), 139 states have internal predecessors, (152), 13 states have call successors, (13), 9 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 13 states have call successors, (15) [2022-07-11 23:01:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 180 transitions. [2022-07-11 23:01:01,050 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 180 transitions. Word has length 69 [2022-07-11 23:01:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:01:01,050 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 180 transitions. [2022-07-11 23:01:01,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 5 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2022-07-11 23:01:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 180 transitions. [2022-07-11 23:01:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-11 23:01:01,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:01:01,051 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:01:01,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-11 23:01:01,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-11 23:01:01,276 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:01:01,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:01:01,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1130035513, now seen corresponding path program 6 times [2022-07-11 23:01:01,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:01:01,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884533628] [2022-07-11 23:01:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:01:01,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:01:01,286 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:01:01,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241773294] [2022-07-11 23:01:01,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-11 23:01:01,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:01:01,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:01:01,288 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) [2022-07-11 23:01:01,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-11 23:01:01,418 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-07-11 23:01:01,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:01:01,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 23:01:01,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:01:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-11 23:01:01,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:01:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-11 23:01:01,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:01:01,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884533628] [2022-07-11 23:01:01,556 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:01:01,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241773294] [2022-07-11 23:01:01,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241773294] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:01:01,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:01:01,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-07-11 23:01:01,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300875908] [2022-07-11 23:01:01,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:01:01,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-11 23:01:01,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:01:01,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-11 23:01:01,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-07-11 23:01:01,558 INFO L87 Difference]: Start difference. First operand 161 states and 180 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-11 23:01:01,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:01:01,784 INFO L93 Difference]: Finished difference Result 175 states and 193 transitions. [2022-07-11 23:01:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-11 23:01:01,785 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 70 [2022-07-11 23:01:01,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:01:01,785 INFO L225 Difference]: With dead ends: 175 [2022-07-11 23:01:01,785 INFO L226 Difference]: Without dead ends: 77 [2022-07-11 23:01:01,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-11 23:01:01,786 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 138 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:01:01,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 161 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:01:01,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-11 23:01:01,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-07-11 23:01:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 65 states have internal predecessors, (74), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-11 23:01:01,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2022-07-11 23:01:01,792 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 70 [2022-07-11 23:01:01,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:01:01,793 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2022-07-11 23:01:01,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-11 23:01:01,793 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2022-07-11 23:01:01,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-11 23:01:01,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:01:01,793 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:01:01,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-11 23:01:02,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-11 23:01:02,000 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:01:02,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:01:02,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1478551406, now seen corresponding path program 7 times [2022-07-11 23:01:02,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:01:02,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727079585] [2022-07-11 23:01:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:01:02,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:01:02,014 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:01:02,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685418633] [2022-07-11 23:01:02,015 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-11 23:01:02,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:01:02,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:01:02,016 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) [2022-07-11 23:01:02,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-11 23:01:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:01:02,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 23:01:02,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:01:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-11 23:01:02,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:01:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-11 23:01:02,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:01:02,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727079585] [2022-07-11 23:01:02,259 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:01:02,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685418633] [2022-07-11 23:01:02,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685418633] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:01:02,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:01:02,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-11 23:01:02,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984865810] [2022-07-11 23:01:02,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:01:02,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-11 23:01:02,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:01:02,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-11 23:01:02,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-07-11 23:01:02,261 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-11 23:01:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:01:02,482 INFO L93 Difference]: Finished difference Result 157 states and 182 transitions. [2022-07-11 23:01:02,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-11 23:01:02,482 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-07-11 23:01:02,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:01:02,483 INFO L225 Difference]: With dead ends: 157 [2022-07-11 23:01:02,483 INFO L226 Difference]: Without dead ends: 109 [2022-07-11 23:01:02,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-07-11 23:01:02,484 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 74 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:01:02,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 128 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:01:02,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-11 23:01:02,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2022-07-11 23:01:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 83 states have (on average 1.1325301204819278) internal successors, (94), 83 states have internal predecessors, (94), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-11 23:01:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2022-07-11 23:01:02,492 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 71 [2022-07-11 23:01:02,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:01:02,492 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2022-07-11 23:01:02,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-11 23:01:02,492 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2022-07-11 23:01:02,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-11 23:01:02,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:01:02,493 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:01:02,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-11 23:01:02,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-11 23:01:02,694 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:01:02,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:01:02,694 INFO L85 PathProgramCache]: Analyzing trace with hash 599706749, now seen corresponding path program 8 times [2022-07-11 23:01:02,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:01:02,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982577748] [2022-07-11 23:01:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:01:02,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:01:02,712 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:01:02,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540970647] [2022-07-11 23:01:02,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 23:01:02,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:01:02,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:01:02,717 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) [2022-07-11 23:01:02,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-11 23:01:04,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 23:01:04,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:01:04,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 123 conjunts are in the unsatisfiable core [2022-07-11 23:01:04,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:01:04,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2022-07-11 23:01:04,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-07-11 23:01:04,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-11 23:01:04,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 75 [2022-07-11 23:01:04,278 INFO L356 Elim1Store]: treesize reduction 180, result has 9.5 percent of original size [2022-07-11 23:01:04,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 142 [2022-07-11 23:01:04,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:01:04,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:01:04,325 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 3 [2022-07-11 23:01:04,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 177 [2022-07-11 23:01:04,475 INFO L356 Elim1Store]: treesize reduction 394, result has 9.0 percent of original size [2022-07-11 23:01:04,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 348 treesize of output 419 [2022-07-11 23:01:04,493 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-11 23:01:04,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 167 [2022-07-11 23:01:04,879 INFO L356 Elim1Store]: treesize reduction 591, result has 8.1 percent of original size [2022-07-11 23:01:04,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 225 treesize of output 299 [2022-07-11 23:01:04,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:04,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:04,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:04,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 26 [2022-07-11 23:01:05,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 124 [2022-07-11 23:01:05,343 INFO L356 Elim1Store]: treesize reduction 852, result has 7.5 percent of original size [2022-07-11 23:01:05,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 123 treesize of output 200 [2022-07-11 23:01:05,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:05,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:05,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:05,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:05,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:05,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:05,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 44 [2022-07-11 23:01:05,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 134 [2022-07-11 23:01:05,726 INFO L356 Elim1Store]: treesize reduction 1068, result has 6.9 percent of original size [2022-07-11 23:01:05,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 133 treesize of output 213 [2022-07-11 23:01:06,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 150 [2022-07-11 23:01:06,613 INFO L356 Elim1Store]: treesize reduction 894, result has 5.8 percent of original size [2022-07-11 23:01:06,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 346 treesize of output 427 [2022-07-11 23:01:06,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:06,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:06,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:06,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:06,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:06,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:06,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 39 [2022-07-11 23:01:07,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 127 [2022-07-11 23:01:07,622 INFO L356 Elim1Store]: treesize reduction 1203, result has 5.6 percent of original size [2022-07-11 23:01:07,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 126 treesize of output 212 [2022-07-11 23:01:07,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:07,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 62 [2022-07-11 23:01:07,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 123 [2022-07-11 23:01:08,228 INFO L356 Elim1Store]: treesize reduction 1230, result has 6.0 percent of original size [2022-07-11 23:01:08,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 122 treesize of output 191 [2022-07-11 23:01:08,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:01:08,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 62 [2022-07-11 23:02:16,283 INFO L356 Elim1Store]: treesize reduction 1329, result has 7.5 percent of original size [2022-07-11 23:02:16,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 54 case distinctions, treesize of input 145 treesize of output 153 [2022-07-11 23:02:19,958 INFO L356 Elim1Store]: treesize reduction 1430, result has 10.5 percent of original size [2022-07-11 23:02:19,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 212 treesize of output 220 [2022-07-11 23:02:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 8 proven. 222 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:02:21,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:03:52,382 WARN L233 SmtUtils]: Spent 12.17s on a formula simplification that was a NOOP. DAG size: 94 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-11 23:03:53,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:03:53,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982577748] [2022-07-11 23:03:53,524 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:03:53,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540970647] [2022-07-11 23:03:53,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540970647] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:03:53,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:03:53,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2022-07-11 23:03:53,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471406465] [2022-07-11 23:03:53,524 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-11 23:03:53,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-11 23:03:53,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:03:53,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-11 23:03:53,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=4455, Unknown=28, NotChecked=0, Total=5256 [2022-07-11 23:03:53,527 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 48 states, 48 states have (on average 1.625) internal successors, (78), 48 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-11 23:03:54,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:03:54,743 INFO L93 Difference]: Finished difference Result 195 states and 224 transitions. [2022-07-11 23:03:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-11 23:03:54,744 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.625) internal successors, (78), 48 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 89 [2022-07-11 23:03:54,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:03:54,745 INFO L225 Difference]: With dead ends: 195 [2022-07-11 23:03:54,745 INFO L226 Difference]: Without dead ends: 191 [2022-07-11 23:03:54,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 42 SyntacticMatches, 14 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3203 ImplicationChecksByTransitivity, 160.6s TimeCoverageRelationStatistics Valid=777, Invalid=4597, Unknown=28, NotChecked=0, Total=5402 [2022-07-11 23:03:54,747 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 39 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 232 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:03:54,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 395 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 354 Invalid, 0 Unknown, 232 Unchecked, 1.0s Time] [2022-07-11 23:03:54,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-11 23:03:54,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 159. [2022-07-11 23:03:54,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 144 states have (on average 1.1388888888888888) internal successors, (164), 144 states have internal predecessors, (164), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2022-07-11 23:03:54,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 183 transitions. [2022-07-11 23:03:54,774 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 183 transitions. Word has length 89 [2022-07-11 23:03:54,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:03:54,774 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 183 transitions. [2022-07-11 23:03:54,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.625) internal successors, (78), 48 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-11 23:03:54,774 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 183 transitions. [2022-07-11 23:03:54,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-11 23:03:54,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:54,776 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:03:54,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-11 23:03:54,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:54,991 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:54,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:54,992 INFO L85 PathProgramCache]: Analyzing trace with hash 952826399, now seen corresponding path program 9 times [2022-07-11 23:03:54,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:54,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258436430] [2022-07-11 23:03:54,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:54,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:55,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:03:55,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494195454] [2022-07-11 23:03:55,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 23:03:55,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:55,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:55,005 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) [2022-07-11 23:03:55,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-11 23:03:55,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-11 23:03:55,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:03:55,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-11 23:03:55,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:03:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 62 proven. 59 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-11 23:03:55,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:03:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 37 proven. 84 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-11 23:03:55,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:03:55,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258436430] [2022-07-11 23:03:55,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:03:55,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494195454] [2022-07-11 23:03:55,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494195454] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:03:55,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:03:55,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-11 23:03:55,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428261769] [2022-07-11 23:03:55,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:03:55,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-11 23:03:55,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:03:55,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-11 23:03:55,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-11 23:03:55,545 INFO L87 Difference]: Start difference. First operand 159 states and 183 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-11 23:03:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:03:55,860 INFO L93 Difference]: Finished difference Result 389 states and 459 transitions. [2022-07-11 23:03:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-11 23:03:55,861 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 91 [2022-07-11 23:03:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:03:55,862 INFO L225 Difference]: With dead ends: 389 [2022-07-11 23:03:55,862 INFO L226 Difference]: Without dead ends: 271 [2022-07-11 23:03:55,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-07-11 23:03:55,863 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 198 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:03:55,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 187 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:03:55,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-11 23:03:55,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 216. [2022-07-11 23:03:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 194 states have (on average 1.1288659793814433) internal successors, (219), 194 states have internal predecessors, (219), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (17), 14 states have call predecessors, (17), 12 states have call successors, (17) [2022-07-11 23:03:55,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 248 transitions. [2022-07-11 23:03:55,893 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 248 transitions. Word has length 91 [2022-07-11 23:03:55,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:03:55,893 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 248 transitions. [2022-07-11 23:03:55,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-11 23:03:55,894 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 248 transitions. [2022-07-11 23:03:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-11 23:03:55,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:55,895 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:03:55,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-11 23:03:56,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-11 23:03:56,111 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:56,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:56,112 INFO L85 PathProgramCache]: Analyzing trace with hash -825002241, now seen corresponding path program 10 times [2022-07-11 23:03:56,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:56,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425465623] [2022-07-11 23:03:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:56,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:56,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:03:56,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088661977] [2022-07-11 23:03:56,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-11 23:03:56,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:56,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:56,125 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) [2022-07-11 23:03:56,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-11 23:03:56,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-11 23:03:56,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:03:56,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-11 23:03:56,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:03:56,282 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 88 proven. 41 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-11 23:03:56,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:03:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 73 proven. 48 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-11 23:03:56,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:03:56,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425465623] [2022-07-11 23:03:56,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:03:56,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088661977] [2022-07-11 23:03:56,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088661977] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:03:56,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:03:56,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-11 23:03:56,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747593622] [2022-07-11 23:03:56,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:03:56,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-11 23:03:56,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:03:56,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-11 23:03:56,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-11 23:03:56,355 INFO L87 Difference]: Start difference. First operand 216 states and 248 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-11 23:03:56,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:03:56,708 INFO L93 Difference]: Finished difference Result 291 states and 329 transitions. [2022-07-11 23:03:56,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-11 23:03:56,709 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-11 23:03:56,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:03:56,710 INFO L225 Difference]: With dead ends: 291 [2022-07-11 23:03:56,710 INFO L226 Difference]: Without dead ends: 223 [2022-07-11 23:03:56,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-07-11 23:03:56,711 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 69 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:03:56,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 328 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-11 23:03:56,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-07-11 23:03:56,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 214. [2022-07-11 23:03:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 192 states have (on average 1.1041666666666667) internal successors, (212), 192 states have internal predecessors, (212), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (17), 14 states have call predecessors, (17), 12 states have call successors, (17) [2022-07-11 23:03:56,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 241 transitions. [2022-07-11 23:03:56,735 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 241 transitions. Word has length 91 [2022-07-11 23:03:56,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:03:56,735 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 241 transitions. [2022-07-11 23:03:56,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-11 23:03:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 241 transitions. [2022-07-11 23:03:56,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-11 23:03:56,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:03:56,737 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:03:56,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-11 23:03:56,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-11 23:03:56,955 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:03:56,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:03:56,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2080469951, now seen corresponding path program 2 times [2022-07-11 23:03:56,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:03:56,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119207153] [2022-07-11 23:03:56,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:03:56,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:03:56,969 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:03:56,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757219883] [2022-07-11 23:03:56,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 23:03:56,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:03:56,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:56,971 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) [2022-07-11 23:03:56,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-11 23:03:58,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 23:03:58,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:03:58,833 WARN L261 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 143 conjunts are in the unsatisfiable core [2022-07-11 23:03:58,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:03:58,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2022-07-11 23:03:58,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-07-11 23:03:58,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-11 23:03:58,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 73 [2022-07-11 23:03:58,974 INFO L356 Elim1Store]: treesize reduction 166, result has 9.3 percent of original size [2022-07-11 23:03:58,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 140 [2022-07-11 23:03:59,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:59,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:59,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 3 [2022-07-11 23:03:59,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 85 [2022-07-11 23:03:59,185 INFO L356 Elim1Store]: treesize reduction 322, result has 8.5 percent of original size [2022-07-11 23:03:59,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 84 treesize of output 155 [2022-07-11 23:03:59,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:59,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:59,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:03:59,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 22 [2022-07-11 23:03:59,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 75 [2022-07-11 23:03:59,555 INFO L356 Elim1Store]: treesize reduction 303, result has 6.2 percent of original size [2022-07-11 23:03:59,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 74 treesize of output 148 [2022-07-11 23:03:59,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 188 [2022-07-11 23:03:59,863 INFO L356 Elim1Store]: treesize reduction 532, result has 6.5 percent of original size [2022-07-11 23:03:59,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 575 treesize of output 648 [2022-07-11 23:03:59,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:59,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:59,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:59,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:59,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:59,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:59,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:59,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:59,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:03:59,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:00,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 42 [2022-07-11 23:04:00,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 98 [2022-07-11 23:04:00,475 INFO L356 Elim1Store]: treesize reduction 676, result has 6.5 percent of original size [2022-07-11 23:04:00,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 97 treesize of output 169 [2022-07-11 23:04:01,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 170 [2022-07-11 23:04:01,520 INFO L356 Elim1Store]: treesize reduction 894, result has 5.8 percent of original size [2022-07-11 23:04:01,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 617 treesize of output 690 [2022-07-11 23:04:01,580 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-11 23:04:02,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 262 treesize of output 243 [2022-07-11 23:04:02,515 INFO L356 Elim1Store]: treesize reduction 1151, result has 5.6 percent of original size [2022-07-11 23:04:02,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 792 treesize of output 874 [2022-07-11 23:04:02,808 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-11 23:04:03,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 237 [2022-07-11 23:04:03,950 INFO L356 Elim1Store]: treesize reduction 1382, result has 5.6 percent of original size [2022-07-11 23:04:03,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 1183 treesize of output 1233 [2022-07-11 23:04:04,069 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-11 23:04:08,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 191 [2022-07-11 23:04:10,223 INFO L356 Elim1Store]: treesize reduction 1978, result has 4.5 percent of original size [2022-07-11 23:04:10,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 64 case distinctions, treesize of input 243 treesize of output 312 [2022-07-11 23:04:10,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:10,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:10,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:11,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 320 treesize of output 483 [2022-07-11 23:04:11,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:11,095 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:11,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:11,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:04:11,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 253 treesize of output 82 [2022-07-11 23:04:19,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 202 [2022-07-11 23:04:20,519 INFO L356 Elim1Store]: treesize reduction 1434, result has 10.2 percent of original size [2022-07-11 23:04:20,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 255 treesize of output 289 [2022-07-11 23:04:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 8 proven. 224 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-11 23:04:21,993 INFO L328 TraceCheckSpWp]: Computing backward predicates...