./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array8_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/array8_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 06625eaf591a62e295090a882d83c1e11aaafca7ac8895e7d4adcf51d5b26e02 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 11:41:45,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 11:41:45,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 11:41:45,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 11:41:45,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 11:41:45,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 11:41:45,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 11:41:45,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 11:41:45,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 11:41:45,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 11:41:45,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 11:41:45,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 11:41:45,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 11:41:45,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 11:41:45,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 11:41:45,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 11:41:45,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 11:41:45,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 11:41:45,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 11:41:45,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 11:41:45,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 11:41:45,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 11:41:45,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 11:41:45,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 11:41:45,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 11:41:45,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 11:41:45,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 11:41:45,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 11:41:45,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 11:41:45,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 11:41:45,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 11:41:45,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 11:41:45,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 11:41:45,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 11:41:45,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 11:41:45,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 11:41:45,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 11:41:45,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 11:41:45,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 11:41:45,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 11:41:45,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 11:41:45,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 11:41:45,979 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 11:41:45,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 11:41:45,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 11:41:45,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 11:41:45,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 11:41:45,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 11:41:45,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 11:41:45,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 11:41:45,995 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 11:41:45,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 11:41:45,996 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 11:41:45,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 11:41:45,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 11:41:45,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 11:41:45,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 11:41:45,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 11:41:45,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 11:41:45,998 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 11:41:45,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 11:41:45,998 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 11:41:45,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 11:41:45,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 11:41:45,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 11:41:45,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 11:41:45,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 11:41:45,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 11:41:45,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 11:41:45,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 11:41:46,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 11:41:46,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 11:41:46,000 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 11:41:46,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 11:41:46,001 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 11:41:46,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 11:41:46,001 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 11:41:46,001 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06625eaf591a62e295090a882d83c1e11aaafca7ac8895e7d4adcf51d5b26e02 [2023-02-18 11:41:46,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 11:41:46,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 11:41:46,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 11:41:46,203 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 11:41:46,203 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 11:41:46,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array8_pattern.c [2023-02-18 11:41:47,420 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 11:41:47,604 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 11:41:47,605 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array8_pattern.c [2023-02-18 11:41:47,611 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a09d4e429/bfe5a0b4f25e4a4fb1d592c374a77a06/FLAGfd9255ae8 [2023-02-18 11:41:47,625 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a09d4e429/bfe5a0b4f25e4a4fb1d592c374a77a06 [2023-02-18 11:41:47,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 11:41:47,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 11:41:47,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 11:41:47,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 11:41:47,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 11:41:47,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 11:41:47" (1/1) ... [2023-02-18 11:41:47,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4395b934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47, skipping insertion in model container [2023-02-18 11:41:47,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 11:41:47" (1/1) ... [2023-02-18 11:41:47,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 11:41:47,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 11:41:47,806 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array8_pattern.c[1321,1334] [2023-02-18 11:41:47,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 11:41:47,838 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 11:41:47,850 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array8_pattern.c[1321,1334] [2023-02-18 11:41:47,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 11:41:47,882 INFO L208 MainTranslator]: Completed translation [2023-02-18 11:41:47,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47 WrapperNode [2023-02-18 11:41:47,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 11:41:47,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 11:41:47,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 11:41:47,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 11:41:47,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47" (1/1) ... [2023-02-18 11:41:47,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47" (1/1) ... [2023-02-18 11:41:47,928 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-02-18 11:41:47,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 11:41:47,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 11:41:47,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 11:41:47,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 11:41:47,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47" (1/1) ... [2023-02-18 11:41:47,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47" (1/1) ... [2023-02-18 11:41:47,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47" (1/1) ... [2023-02-18 11:41:47,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47" (1/1) ... [2023-02-18 11:41:47,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47" (1/1) ... [2023-02-18 11:41:47,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47" (1/1) ... [2023-02-18 11:41:47,965 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47" (1/1) ... [2023-02-18 11:41:47,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47" (1/1) ... [2023-02-18 11:41:47,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 11:41:47,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 11:41:47,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 11:41:47,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 11:41:47,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47" (1/1) ... [2023-02-18 11:41:47,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 11:41:47,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 11:41:48,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 11:41:48,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 11:41:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 11:41:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-18 11:41:48,036 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-18 11:41:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 11:41:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 11:41:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 11:41:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 11:41:48,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 11:41:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 11:41:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 11:41:48,100 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 11:41:48,102 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 11:41:48,228 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 11:41:48,233 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 11:41:48,233 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-18 11:41:48,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:41:48 BoogieIcfgContainer [2023-02-18 11:41:48,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 11:41:48,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 11:41:48,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 11:41:48,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 11:41:48,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 11:41:47" (1/3) ... [2023-02-18 11:41:48,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f14461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 11:41:48, skipping insertion in model container [2023-02-18 11:41:48,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:41:47" (2/3) ... [2023-02-18 11:41:48,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f14461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 11:41:48, skipping insertion in model container [2023-02-18 11:41:48,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:41:48" (3/3) ... [2023-02-18 11:41:48,245 INFO L112 eAbstractionObserver]: Analyzing ICFG array8_pattern.c [2023-02-18 11:41:48,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 11:41:48,290 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 11:41:48,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 11:41:48,340 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3bee5ca0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 11:41:48,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 11:41:48,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 11:41:48,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 11:41:48,359 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 11:41:48,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 11:41:48,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 11:41:48,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 11:41:48,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1127586545, now seen corresponding path program 1 times [2023-02-18 11:41:48,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 11:41:48,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83369203] [2023-02-18 11:41:48,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:41:48,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 11:41:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:41:48,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 11:41:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:41:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 11:41:48,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 11:41:48,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83369203] [2023-02-18 11:41:48,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83369203] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 11:41:48,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 11:41:48,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 11:41:48,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394165497] [2023-02-18 11:41:48,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 11:41:48,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 11:41:48,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 11:41:48,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 11:41:48,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 11:41:48,562 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-02-18 11:41:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 11:41:48,587 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2023-02-18 11:41:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 11:41:48,589 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 16 [2023-02-18 11:41:48,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 11:41:48,596 INFO L225 Difference]: With dead ends: 53 [2023-02-18 11:41:48,597 INFO L226 Difference]: Without dead ends: 24 [2023-02-18 11:41:48,600 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 [2023-02-18 11:41:48,606 INFO L413 NwaCegarLoop]: 32 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, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 11:41:48,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 11:41:48,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-18 11:41:48,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-02-18 11:41:48,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 11:41:48,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-02-18 11:41:48,641 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2023-02-18 11:41:48,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 11:41:48,642 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-02-18 11:41:48,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-02-18 11:41:48,643 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-02-18 11:41:48,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 11:41:48,644 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 11:41:48,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 11:41:48,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 11:41:48,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 11:41:48,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 11:41:48,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1008571545, now seen corresponding path program 1 times [2023-02-18 11:41:48,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 11:41:48,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143067147] [2023-02-18 11:41:48,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:41:48,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 11:41:48,678 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 11:41:48,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623187901] [2023-02-18 11:41:48,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:41:48,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 11:41:48,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 11:41:48,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 11:41:48,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 11:41:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:41:48,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 11:41:48,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 11:41:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 11:41:48,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 11:41:48,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 11:41:48,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143067147] [2023-02-18 11:41:48,819 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 11:41:48,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623187901] [2023-02-18 11:41:48,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623187901] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 11:41:48,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 11:41:48,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 11:41:48,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989489335] [2023-02-18 11:41:48,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 11:41:48,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 11:41:48,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 11:41:48,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 11:41:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-18 11:41:48,823 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 11:41:48,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 11:41:48,899 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2023-02-18 11:41:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 11:41:48,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2023-02-18 11:41:48,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 11:41:48,900 INFO L225 Difference]: With dead ends: 50 [2023-02-18 11:41:48,901 INFO L226 Difference]: Without dead ends: 32 [2023-02-18 11:41:48,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-02-18 11:41:48,902 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 11:41:48,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 60 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 11:41:48,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-18 11:41:48,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-02-18 11:41:48,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 11:41:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-02-18 11:41:48,909 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2023-02-18 11:41:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 11:41:48,909 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-02-18 11:41:48,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 11:41:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-02-18 11:41:48,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-18 11:41:48,911 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 11:41:48,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 11:41:48,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 11:41:49,117 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 [2023-02-18 11:41:49,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 11:41:49,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 11:41:49,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1890411897, now seen corresponding path program 1 times [2023-02-18 11:41:49,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 11:41:49,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538093960] [2023-02-18 11:41:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:41:49,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 11:41:49,153 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 11:41:49,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431661325] [2023-02-18 11:41:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:41:49,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 11:41:49,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 11:41:49,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 11:41:49,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 11:41:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:41:49,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-18 11:41:49,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 11:41:49,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-02-18 11:41:49,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 11:41:49,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2023-02-18 11:41:49,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 28 [2023-02-18 11:41:49,331 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 11 [2023-02-18 11:41:49,337 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 11 [2023-02-18 11:41:49,456 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 11:41:49,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 38 treesize of output 76 [2023-02-18 11:41:49,506 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 11:41:49,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 134 [2023-02-18 11:41:49,648 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 11:41:49,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 13 case distinctions, treesize of input 248 treesize of output 304 [2023-02-18 11:41:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 11:41:53,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 11:41:53,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 11:41:53,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538093960] [2023-02-18 11:41:53,200 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 11:41:53,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431661325] [2023-02-18 11:41:53,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431661325] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 11:41:53,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 11:41:53,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-02-18 11:41:53,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793786694] [2023-02-18 11:41:53,201 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 11:41:53,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 11:41:53,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 11:41:53,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 11:41:53,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-02-18 11:41:53,204 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 11:41:53,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 11:41:53,562 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2023-02-18 11:41:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-18 11:41:53,563 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-02-18 11:41:53,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 11:41:53,564 INFO L225 Difference]: With dead ends: 56 [2023-02-18 11:41:53,564 INFO L226 Difference]: Without dead ends: 52 [2023-02-18 11:41:53,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2023-02-18 11:41:53,565 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 41 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 11:41:53,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 117 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 11:41:53,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-18 11:41:53,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2023-02-18 11:41:53,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 11:41:53,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2023-02-18 11:41:53,574 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 29 [2023-02-18 11:41:53,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 11:41:53,575 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2023-02-18 11:41:53,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 11:41:53,575 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-02-18 11:41:53,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-18 11:41:53,576 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 11:41:53,576 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 11:41:53,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 11:41:53,782 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 [2023-02-18 11:41:53,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 11:41:53,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 11:41:53,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1497384887, now seen corresponding path program 1 times [2023-02-18 11:41:53,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 11:41:53,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943387795] [2023-02-18 11:41:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:41:53,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 11:41:53,801 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 11:41:53,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124056246] [2023-02-18 11:41:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:41:53,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 11:41:53,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 11:41:53,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 11:41:53,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 11:41:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 11:41:53,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 11:41:53,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 11:41:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 11:41:53,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 11:41:53,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 11:41:53,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 11:41:53,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943387795] [2023-02-18 11:41:53,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 11:41:53,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124056246] [2023-02-18 11:41:53,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124056246] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 11:41:53,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 11:41:53,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-02-18 11:41:53,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117772182] [2023-02-18 11:41:53,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 11:41:53,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 11:41:53,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 11:41:53,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 11:41:53,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-18 11:41:53,982 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 11:41:54,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 11:41:54,149 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2023-02-18 11:41:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-18 11:41:54,150 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-02-18 11:41:54,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 11:41:54,151 INFO L225 Difference]: With dead ends: 123 [2023-02-18 11:41:54,152 INFO L226 Difference]: Without dead ends: 105 [2023-02-18 11:41:54,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-02-18 11:41:54,153 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 87 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 11:41:54,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 99 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 11:41:54,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-02-18 11:41:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 66. [2023-02-18 11:41:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 11:41:54,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2023-02-18 11:41:54,186 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 29 [2023-02-18 11:41:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 11:41:54,186 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2023-02-18 11:41:54,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 11:41:54,187 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2023-02-18 11:41:54,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 11:41:54,188 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 11:41:54,188 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-02-18 11:41:54,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 11:41:54,393 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 [2023-02-18 11:41:54,394 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 11:41:54,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 11:41:54,394 INFO L85 PathProgramCache]: Analyzing trace with hash -32099493, now seen corresponding path program 2 times [2023-02-18 11:41:54,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 11:41:54,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425744860] [2023-02-18 11:41:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:41:54,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 11:41:54,412 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 11:41:54,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284094211] [2023-02-18 11:41:54,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 11:41:54,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 11:41:54,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 11:41:54,414 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 11:41:54,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 11:41:54,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 11:41:54,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 11:41:54,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 11:41:54,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 11:41:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 11:41:54,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 11:41:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 11:41:54,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 11:41:54,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425744860] [2023-02-18 11:41:54,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 11:41:54,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284094211] [2023-02-18 11:41:54,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284094211] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 11:41:54,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 11:41:54,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-18 11:41:54,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656683307] [2023-02-18 11:41:54,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 11:41:54,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 11:41:54,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 11:41:54,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 11:41:54,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-18 11:41:54,524 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 11:41:54,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 11:41:54,606 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2023-02-18 11:41:54,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 11:41:54,606 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-02-18 11:41:54,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 11:41:54,611 INFO L225 Difference]: With dead ends: 93 [2023-02-18 11:41:54,611 INFO L226 Difference]: Without dead ends: 83 [2023-02-18 11:41:54,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-18 11:41:54,612 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 49 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 11:41:54,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 91 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 11:41:54,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-02-18 11:41:54,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2023-02-18 11:41:54,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 59 states have internal predecessors, (67), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 11:41:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2023-02-18 11:41:54,629 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 31 [2023-02-18 11:41:54,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 11:41:54,630 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2023-02-18 11:41:54,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 11:41:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2023-02-18 11:41:54,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 11:41:54,635 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 11:41:54,635 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-02-18 11:41:54,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 11:41:54,836 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 [2023-02-18 11:41:54,836 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 11:41:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 11:41:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1464847157, now seen corresponding path program 2 times [2023-02-18 11:41:54,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 11:41:54,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137483026] [2023-02-18 11:41:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:41:54,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 11:41:54,864 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 11:41:54,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577856213] [2023-02-18 11:41:54,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 11:41:54,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 11:41:54,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 11:41:54,866 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 11:41:54,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 11:41:54,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 11:41:54,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 11:41:54,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 11:41:54,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 11:41:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 11:41:54,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 11:41:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 11:41:54,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 11:41:54,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137483026] [2023-02-18 11:41:54,957 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 11:41:54,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577856213] [2023-02-18 11:41:54,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577856213] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 11:41:54,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 11:41:54,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-18 11:41:54,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787690369] [2023-02-18 11:41:54,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 11:41:54,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 11:41:54,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 11:41:54,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 11:41:54,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-18 11:41:54,960 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 11:41:55,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 11:41:55,048 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2023-02-18 11:41:55,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 11:41:55,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-02-18 11:41:55,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 11:41:55,050 INFO L225 Difference]: With dead ends: 82 [2023-02-18 11:41:55,050 INFO L226 Difference]: Without dead ends: 78 [2023-02-18 11:41:55,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-18 11:41:55,051 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 11:41:55,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 102 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 11:41:55,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-02-18 11:41:55,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2023-02-18 11:41:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.12) internal successors, (56), 50 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 11:41:55,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2023-02-18 11:41:55,059 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 31 [2023-02-18 11:41:55,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 11:41:55,060 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2023-02-18 11:41:55,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 11:41:55,060 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2023-02-18 11:41:55,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 11:41:55,061 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 11:41:55,061 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-02-18 11:41:55,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-18 11:41:55,266 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 [2023-02-18 11:41:55,267 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 11:41:55,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 11:41:55,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1236086951, now seen corresponding path program 3 times [2023-02-18 11:41:55,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 11:41:55,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323089202] [2023-02-18 11:41:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 11:41:55,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 11:41:55,286 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 11:41:55,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139488147] [2023-02-18 11:41:55,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 11:41:55,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 11:41:55,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 11:41:55,288 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 11:41:55,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 11:41:55,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-18 11:41:55,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 11:41:55,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-18 11:41:55,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 11:41:55,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-02-18 11:41:55,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 11:41:55,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2023-02-18 11:41:55,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 28 [2023-02-18 11:41:55,401 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 11 [2023-02-18 11:41:55,405 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 11 [2023-02-18 11:41:55,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 11:41:55,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 11:41:55,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 62 treesize of output 51 [2023-02-18 11:41:55,552 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 11:41:55,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 11:41:55,554 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 11:41:55,555 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 11:41:55,556 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 11:41:55,556 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 11:41:55,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 112 treesize of output 462 [2023-02-18 11:46:05,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 11:46:05,908 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 11:46:05,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 11:46:08,204 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 11:46:32,952 INFO L217 Elim1Store]: Index analysis took 29561 ms [2023-02-18 11:46:34,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 11:46:34,033 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 11:46:36,067 INFO L173 IndexEqualityManager]: detected equality via solver