./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 f4b24e32 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-?-f4b24e3 [2022-07-13 10:47:27,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 10:47:27,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 10:47:27,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 10:47:27,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 10:47:27,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 10:47:27,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 10:47:27,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 10:47:27,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 10:47:27,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 10:47:27,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 10:47:27,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 10:47:27,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 10:47:27,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 10:47:27,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 10:47:27,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 10:47:27,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 10:47:27,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 10:47:27,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 10:47:27,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 10:47:27,073 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 10:47:27,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 10:47:27,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 10:47:27,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 10:47:27,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 10:47:27,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 10:47:27,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 10:47:27,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 10:47:27,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 10:47:27,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 10:47:27,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 10:47:27,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 10:47:27,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 10:47:27,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 10:47:27,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 10:47:27,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 10:47:27,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 10:47:27,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 10:47:27,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 10:47:27,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 10:47:27,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 10:47:27,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 10:47:27,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 10:47:27,114 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 10:47:27,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 10:47:27,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 10:47:27,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 10:47:27,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 10:47:27,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 10:47:27,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 10:47:27,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 10:47:27,118 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 10:47:27,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 10:47:27,118 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 10:47:27,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 10:47:27,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 10:47:27,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 10:47:27,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 10:47:27,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 10:47:27,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 10:47:27,119 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 10:47:27,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 10:47:27,120 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 10:47:27,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 10:47:27,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 10:47:27,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 10:47:27,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 10:47:27,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:47:27,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 10:47:27,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 10:47:27,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 10:47:27,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 10:47:27,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 10:47:27,122 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 10:47:27,123 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 10:47:27,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 10:47:27,123 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 [2022-07-13 10:47:27,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 10:47:27,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 10:47:27,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 10:47:27,304 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 10:47:27,304 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 10:47:27,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array24_pattern.c [2022-07-13 10:47:27,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76968cb81/72e5baf1d36444548066aaaa04f6e5a1/FLAG913ef5acc [2022-07-13 10:47:27,692 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 10:47:27,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array24_pattern.c [2022-07-13 10:47:27,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76968cb81/72e5baf1d36444548066aaaa04f6e5a1/FLAG913ef5acc [2022-07-13 10:47:27,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76968cb81/72e5baf1d36444548066aaaa04f6e5a1 [2022-07-13 10:47:27,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 10:47:27,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 10:47:27,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 10:47:27,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 10:47:27,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 10:47:27,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:47:27" (1/1) ... [2022-07-13 10:47:27,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190a5a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:27, skipping insertion in model container [2022-07-13 10:47:27,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:47:27" (1/1) ... [2022-07-13 10:47:27,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 10:47:27,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 10:47:27,851 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] [2022-07-13 10:47:27,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:47:27,871 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 10:47:27,883 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] [2022-07-13 10:47:27,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:47:27,902 INFO L208 MainTranslator]: Completed translation [2022-07-13 10:47:27,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:27 WrapperNode [2022-07-13 10:47:27,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 10:47:27,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 10:47:27,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 10:47:27,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 10:47:27,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:27" (1/1) ... [2022-07-13 10:47:27,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:27" (1/1) ... [2022-07-13 10:47:27,940 INFO L137 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2022-07-13 10:47:27,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 10:47:27,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 10:47:27,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 10:47:27,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 10:47:27,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:27" (1/1) ... [2022-07-13 10:47:27,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:27" (1/1) ... [2022-07-13 10:47:27,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:27" (1/1) ... [2022-07-13 10:47:27,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:27" (1/1) ... [2022-07-13 10:47:27,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:27" (1/1) ... [2022-07-13 10:47:27,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:27" (1/1) ... [2022-07-13 10:47:27,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:27" (1/1) ... [2022-07-13 10:47:27,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 10:47:27,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 10:47:27,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 10:47:27,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 10:47:27,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:27" (1/1) ... [2022-07-13 10:47:27,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:47:27,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:28,001 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) [2022-07-13 10:47:28,010 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 [2022-07-13 10:47:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2022-07-13 10:47:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2022-07-13 10:47:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 10:47:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 10:47:28,030 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 10:47:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 10:47:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 10:47:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 10:47:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 10:47:28,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 10:47:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 10:47:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 10:47:28,079 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 10:47:28,080 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 10:47:28,213 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 10:47:28,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 10:47:28,219 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-13 10:47:28,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:47:28 BoogieIcfgContainer [2022-07-13 10:47:28,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 10:47:28,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 10:47:28,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 10:47:28,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 10:47:28,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:47:27" (1/3) ... [2022-07-13 10:47:28,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1832efaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:47:28, skipping insertion in model container [2022-07-13 10:47:28,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:27" (2/3) ... [2022-07-13 10:47:28,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1832efaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:47:28, skipping insertion in model container [2022-07-13 10:47:28,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:47:28" (3/3) ... [2022-07-13 10:47:28,235 INFO L111 eAbstractionObserver]: Analyzing ICFG array24_pattern.c [2022-07-13 10:47:28,244 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 10:47:28,251 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 10:47:28,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 10:47:28,290 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@4fb81e7e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f0ffbb7 [2022-07-13 10:47:28,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 10:47:28,296 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) [2022-07-13 10:47:28,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 10:47:28,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:28,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:47:28,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:28,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:28,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2136211159, now seen corresponding path program 1 times [2022-07-13 10:47:28,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:28,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326926448] [2022-07-13 10:47:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:28,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:47:28,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 10:47:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:47:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:47:28,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:28,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326926448] [2022-07-13 10:47:28,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326926448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:47:28,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:47:28,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 10:47:28,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604522130] [2022-07-13 10:47:28,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:47:28,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 10:47:28,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:28,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 10:47:28,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:47:28,476 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) [2022-07-13 10:47:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:28,502 INFO L93 Difference]: Finished difference Result 77 states and 115 transitions. [2022-07-13 10:47:28,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 10:47:28,505 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 [2022-07-13 10:47:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:28,509 INFO L225 Difference]: With dead ends: 77 [2022-07-13 10:47:28,510 INFO L226 Difference]: Without dead ends: 36 [2022-07-13 10:47:28,512 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 [2022-07-13 10:47:28,516 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 [2022-07-13 10:47:28,521 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] [2022-07-13 10:47:28,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-13 10:47:28,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-13 10:47:28,552 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) [2022-07-13 10:47:28,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2022-07-13 10:47:28,555 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 15 [2022-07-13 10:47:28,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:28,555 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2022-07-13 10:47:28,556 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) [2022-07-13 10:47:28,556 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2022-07-13 10:47:28,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 10:47:28,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:28,559 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] [2022-07-13 10:47:28,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 10:47:28,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:28,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash -699940082, now seen corresponding path program 1 times [2022-07-13 10:47:28,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:28,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607244976] [2022-07-13 10:47:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:28,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:28,594 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:28,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769396342] [2022-07-13 10:47:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:28,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:28,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:28,600 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) [2022-07-13 10:47:28,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 10:47:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:47:28,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 10:47:28,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:47:28,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:47:28,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:28,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607244976] [2022-07-13 10:47:28,806 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:47:28,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769396342] [2022-07-13 10:47:28,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769396342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:47:28,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:47:28,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 10:47:28,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100561043] [2022-07-13 10:47:28,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:47:28,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 10:47:28,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:28,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 10:47:28,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 10:47:28,814 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) [2022-07-13 10:47:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:28,950 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2022-07-13 10:47:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 10:47:28,951 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 [2022-07-13 10:47:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:28,952 INFO L225 Difference]: With dead ends: 76 [2022-07-13 10:47:28,953 INFO L226 Difference]: Without dead ends: 48 [2022-07-13 10:47:28,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-13 10:47:28,955 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 [2022-07-13 10:47:28,955 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] [2022-07-13 10:47:28,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-13 10:47:28,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2022-07-13 10:47:28,963 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) [2022-07-13 10:47:28,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2022-07-13 10:47:28,964 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 35 [2022-07-13 10:47:28,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:28,964 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2022-07-13 10:47:28,964 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) [2022-07-13 10:47:28,965 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2022-07-13 10:47:28,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 10:47:28,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:28,966 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] [2022-07-13 10:47:28,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 10:47:29,166 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 [2022-07-13 10:47:29,167 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:29,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:29,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1308831759, now seen corresponding path program 1 times [2022-07-13 10:47:29,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:29,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774102211] [2022-07-13 10:47:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:29,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:29,189 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:29,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755104738] [2022-07-13 10:47:29,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:29,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:29,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:29,191 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) [2022-07-13 10:47:29,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 10:47:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:47:29,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 10:47:29,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 10:47:29,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:47:29,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:29,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774102211] [2022-07-13 10:47:29,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:47:29,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755104738] [2022-07-13 10:47:29,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755104738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:47:29,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:47:29,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 10:47:29,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625460123] [2022-07-13 10:47:29,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:47:29,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 10:47:29,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:29,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 10:47:29,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 10:47:29,260 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) [2022-07-13 10:47:29,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:29,301 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2022-07-13 10:47:29,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 10:47:29,302 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 [2022-07-13 10:47:29,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:29,302 INFO L225 Difference]: With dead ends: 79 [2022-07-13 10:47:29,302 INFO L226 Difference]: Without dead ends: 46 [2022-07-13 10:47:29,303 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 [2022-07-13 10:47:29,304 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 [2022-07-13 10:47:29,304 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] [2022-07-13 10:47:29,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-13 10:47:29,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2022-07-13 10:47:29,308 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) [2022-07-13 10:47:29,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-07-13 10:47:29,309 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 41 [2022-07-13 10:47:29,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:29,309 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-07-13 10:47:29,310 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) [2022-07-13 10:47:29,310 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-07-13 10:47:29,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 10:47:29,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:29,311 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] [2022-07-13 10:47:29,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 10:47:29,526 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 [2022-07-13 10:47:29,527 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:29,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:29,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1300942485, now seen corresponding path program 1 times [2022-07-13 10:47:29,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:29,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644771597] [2022-07-13 10:47:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:29,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:29,537 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:29,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506134715] [2022-07-13 10:47:29,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:29,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:29,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:29,538 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) [2022-07-13 10:47:29,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 10:47:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:47:29,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 10:47:29,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 10:47:29,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:47:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 10:47:29,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:29,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644771597] [2022-07-13 10:47:29,793 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:47:29,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506134715] [2022-07-13 10:47:29,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506134715] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:47:29,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:47:29,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-13 10:47:29,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529733493] [2022-07-13 10:47:29,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:47:29,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 10:47:29,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:29,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 10:47:29,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-07-13 10:47:29,796 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) [2022-07-13 10:47:29,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:29,960 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2022-07-13 10:47:29,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 10:47:29,961 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 [2022-07-13 10:47:29,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:29,963 INFO L225 Difference]: With dead ends: 85 [2022-07-13 10:47:29,963 INFO L226 Difference]: Without dead ends: 50 [2022-07-13 10:47:29,964 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 [2022-07-13 10:47:29,967 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:47:29,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 132 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:47:29,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-13 10:47:29,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-07-13 10:47:29,975 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) [2022-07-13 10:47:29,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2022-07-13 10:47:29,976 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 45 [2022-07-13 10:47:29,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:29,976 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2022-07-13 10:47:29,976 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) [2022-07-13 10:47:29,977 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2022-07-13 10:47:29,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-13 10:47:29,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:29,978 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] [2022-07-13 10:47:30,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 10:47:30,192 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 [2022-07-13 10:47:30,193 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:30,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:30,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1544610617, now seen corresponding path program 2 times [2022-07-13 10:47:30,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:30,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039577743] [2022-07-13 10:47:30,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:30,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:30,202 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:30,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86013835] [2022-07-13 10:47:30,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:47:30,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:30,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:30,207 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) [2022-07-13 10:47:30,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 10:47:30,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 10:47:30,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:47:30,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 10:47:30,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 10:47:30,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:47:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 10:47:30,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:30,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039577743] [2022-07-13 10:47:30,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:47:30,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86013835] [2022-07-13 10:47:30,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86013835] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:47:30,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:47:30,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-13 10:47:30,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235665217] [2022-07-13 10:47:30,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:47:30,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 10:47:30,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:30,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 10:47:30,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-13 10:47:30,349 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) [2022-07-13 10:47:30,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:30,480 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2022-07-13 10:47:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 10:47:30,480 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 [2022-07-13 10:47:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:30,481 INFO L225 Difference]: With dead ends: 106 [2022-07-13 10:47:30,481 INFO L226 Difference]: Without dead ends: 74 [2022-07-13 10:47:30,482 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 [2022-07-13 10:47:30,482 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 [2022-07-13 10:47:30,482 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] [2022-07-13 10:47:30,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-13 10:47:30,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2022-07-13 10:47:30,488 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) [2022-07-13 10:47:30,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2022-07-13 10:47:30,488 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 49 [2022-07-13 10:47:30,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:30,489 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2022-07-13 10:47:30,489 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) [2022-07-13 10:47:30,489 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2022-07-13 10:47:30,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 10:47:30,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:30,490 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] [2022-07-13 10:47:30,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 10:47:30,705 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 [2022-07-13 10:47:30,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:30,706 INFO L85 PathProgramCache]: Analyzing trace with hash -725408594, now seen corresponding path program 3 times [2022-07-13 10:47:30,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:30,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467664154] [2022-07-13 10:47:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:30,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:30,720 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:30,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476897371] [2022-07-13 10:47:30,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 10:47:30,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:30,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:30,724 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) [2022-07-13 10:47:30,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 10:47:31,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-13 10:47:31,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:47:31,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 76 conjunts are in the unsatisfiable core [2022-07-13 10:47:31,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:31,361 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 [2022-07-13 10:47:31,367 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 [2022-07-13 10:47:31,372 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-13 10:47:31,442 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 [2022-07-13 10:47:31,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:31,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:31,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:47:31,452 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 [2022-07-13 10:47:31,638 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 [2022-07-13 10:47:31,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:31,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:31,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:31,698 INFO L356 Elim1Store]: treesize reduction 82, result has 5.7 percent of original size [2022-07-13 10:47:31,699 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 [2022-07-13 10:47:31,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:31,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:31,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:31,776 INFO L356 Elim1Store]: treesize reduction 211, result has 3.2 percent of original size [2022-07-13 10:47:31,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 98 treesize of output 26 [2022-07-13 10:47:31,869 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 92 treesize of output 81 [2022-07-13 10:47:31,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:31,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:31,997 INFO L356 Elim1Store]: treesize reduction 304, result has 14.4 percent of original size [2022-07-13 10:47:31,998 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 80 treesize of output 179 [2022-07-13 10:47:33,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:33,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:33,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:33,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:33,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:33,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:33,375 INFO L356 Elim1Store]: treesize reduction 312, result has 13.8 percent of original size [2022-07-13 10:47:33,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 case distinctions, treesize of input 87 treesize of output 80 [2022-07-13 10:47:34,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:34,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:34,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:34,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:34,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:34,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:34,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:34,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:34,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:34,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:34,059 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:47:34,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 case distinctions, treesize of input 95 treesize of output 121 [2022-07-13 10:47:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:47:34,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:47:40,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:40,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467664154] [2022-07-13 10:47:40,408 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:47:40,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476897371] [2022-07-13 10:47:40,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476897371] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:47:40,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 10:47:40,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-07-13 10:47:40,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435725160] [2022-07-13 10:47:40,409 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 10:47:40,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-13 10:47:40,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:40,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-13 10:47:40,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1830, Unknown=1, NotChecked=0, Total=2256 [2022-07-13 10:47:40,411 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) [2022-07-13 10:47:41,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:41,180 INFO L93 Difference]: Finished difference Result 113 states and 136 transitions. [2022-07-13 10:47:41,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 10:47:41,180 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 [2022-07-13 10:47:41,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:41,182 INFO L225 Difference]: With dead ends: 113 [2022-07-13 10:47:41,182 INFO L226 Difference]: Without dead ends: 109 [2022-07-13 10:47:41,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 32 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=591, Invalid=2714, Unknown=1, NotChecked=0, Total=3306 [2022-07-13 10:47:41,184 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:47:41,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 416 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 156 Invalid, 0 Unknown, 208 Unchecked, 0.1s Time] [2022-07-13 10:47:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-13 10:47:41,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-07-13 10:47:41,204 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) [2022-07-13 10:47:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2022-07-13 10:47:41,205 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 63 [2022-07-13 10:47:41,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:41,206 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2022-07-13 10:47:41,206 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) [2022-07-13 10:47:41,206 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2022-07-13 10:47:41,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 10:47:41,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:41,207 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] [2022-07-13 10:47:41,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 10:47:41,423 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 [2022-07-13 10:47:41,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:41,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:41,424 INFO L85 PathProgramCache]: Analyzing trace with hash -506553876, now seen corresponding path program 1 times [2022-07-13 10:47:41,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:41,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991162891] [2022-07-13 10:47:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:41,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:41,431 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:41,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256470895] [2022-07-13 10:47:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:41,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:41,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:41,434 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) [2022-07-13 10:47:41,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 10:47:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:47:41,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 10:47:41,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-13 10:47:41,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:47:41,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:41,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991162891] [2022-07-13 10:47:41,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:47:41,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256470895] [2022-07-13 10:47:41,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256470895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:47:41,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:47:41,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 10:47:41,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816749633] [2022-07-13 10:47:41,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:47:41,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 10:47:41,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:41,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 10:47:41,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 10:47:41,497 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) [2022-07-13 10:47:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:41,511 INFO L93 Difference]: Finished difference Result 148 states and 181 transitions. [2022-07-13 10:47:41,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 10:47:41,512 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 [2022-07-13 10:47:41,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:41,513 INFO L225 Difference]: With dead ends: 148 [2022-07-13 10:47:41,513 INFO L226 Difference]: Without dead ends: 109 [2022-07-13 10:47:41,515 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 [2022-07-13 10:47:41,516 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 [2022-07-13 10:47:41,516 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] [2022-07-13 10:47:41,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-13 10:47:41,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2022-07-13 10:47:41,536 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) [2022-07-13 10:47:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2022-07-13 10:47:41,539 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 63 [2022-07-13 10:47:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:41,539 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2022-07-13 10:47:41,539 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) [2022-07-13 10:47:41,539 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2022-07-13 10:47:41,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 10:47:41,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:41,543 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] [2022-07-13 10:47:41,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 10:47:41,755 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 [2022-07-13 10:47:41,755 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:41,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:41,756 INFO L85 PathProgramCache]: Analyzing trace with hash 236205423, now seen corresponding path program 1 times [2022-07-13 10:47:41,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:41,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533912139] [2022-07-13 10:47:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:41,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:41,763 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:41,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018683338] [2022-07-13 10:47:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:41,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:41,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:41,764 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) [2022-07-13 10:47:41,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 10:47:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:47:41,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 10:47:41,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-13 10:47:41,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:47:41,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:41,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533912139] [2022-07-13 10:47:41,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:47:41,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018683338] [2022-07-13 10:47:41,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018683338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:47:41,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:47:41,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 10:47:41,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488178494] [2022-07-13 10:47:41,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:47:41,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 10:47:41,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:41,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 10:47:41,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:47:41,847 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) [2022-07-13 10:47:41,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:41,871 INFO L93 Difference]: Finished difference Result 158 states and 195 transitions. [2022-07-13 10:47:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 10:47:41,871 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 [2022-07-13 10:47:41,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:41,873 INFO L225 Difference]: With dead ends: 158 [2022-07-13 10:47:41,873 INFO L226 Difference]: Without dead ends: 118 [2022-07-13 10:47:41,873 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 [2022-07-13 10:47:41,873 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 [2022-07-13 10:47:41,874 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] [2022-07-13 10:47:41,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-13 10:47:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 112. [2022-07-13 10:47:41,882 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) [2022-07-13 10:47:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 137 transitions. [2022-07-13 10:47:41,883 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 137 transitions. Word has length 63 [2022-07-13 10:47:41,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:41,883 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 137 transitions. [2022-07-13 10:47:41,884 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) [2022-07-13 10:47:41,884 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 137 transitions. [2022-07-13 10:47:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 10:47:41,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:41,885 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] [2022-07-13 10:47:41,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 10:47:42,098 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 [2022-07-13 10:47:42,099 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:42,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:42,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1172698608, now seen corresponding path program 4 times [2022-07-13 10:47:42,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:42,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101384131] [2022-07-13 10:47:42,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:42,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:42,109 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:42,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331798385] [2022-07-13 10:47:42,110 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 10:47:42,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:42,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:42,111 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) [2022-07-13 10:47:42,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 10:47:42,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 10:47:42,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:47:42,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 10:47:42,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:42,255 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 10:47:42,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:47:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-13 10:47:42,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:42,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101384131] [2022-07-13 10:47:42,309 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:47:42,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331798385] [2022-07-13 10:47:42,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331798385] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:47:42,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:47:42,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-13 10:47:42,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647698740] [2022-07-13 10:47:42,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:47:42,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 10:47:42,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 10:47:42,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 10:47:42,310 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) [2022-07-13 10:47:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:42,490 INFO L93 Difference]: Finished difference Result 250 states and 310 transitions. [2022-07-13 10:47:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 10:47:42,491 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 [2022-07-13 10:47:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:42,492 INFO L225 Difference]: With dead ends: 250 [2022-07-13 10:47:42,493 INFO L226 Difference]: Without dead ends: 199 [2022-07-13 10:47:42,493 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 [2022-07-13 10:47:42,493 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 [2022-07-13 10:47:42,494 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] [2022-07-13 10:47:42,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-13 10:47:42,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 159. [2022-07-13 10:47:42,508 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) [2022-07-13 10:47:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 193 transitions. [2022-07-13 10:47:42,509 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 193 transitions. Word has length 65 [2022-07-13 10:47:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:42,509 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 193 transitions. [2022-07-13 10:47:42,510 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) [2022-07-13 10:47:42,510 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 193 transitions. [2022-07-13 10:47:42,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 10:47:42,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:42,511 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] [2022-07-13 10:47:42,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 10:47:42,727 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 [2022-07-13 10:47:42,727 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:42,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:42,728 INFO L85 PathProgramCache]: Analyzing trace with hash 785313200, now seen corresponding path program 5 times [2022-07-13 10:47:42,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:42,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758706682] [2022-07-13 10:47:42,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:42,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:42,736 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:42,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429794196] [2022-07-13 10:47:42,736 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 10:47:42,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:42,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:42,740 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) [2022-07-13 10:47:42,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 10:47:43,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-13 10:47:43,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:47:43,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 10:47:43,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-13 10:47:43,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:47:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 10:47:43,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:43,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758706682] [2022-07-13 10:47:43,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:47:43,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429794196] [2022-07-13 10:47:43,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429794196] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:47:43,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:47:43,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-13 10:47:43,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221417378] [2022-07-13 10:47:43,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:47:43,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 10:47:43,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:43,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 10:47:43,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 10:47:43,137 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) [2022-07-13 10:47:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:43,322 INFO L93 Difference]: Finished difference Result 217 states and 258 transitions. [2022-07-13 10:47:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 10:47:43,322 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 [2022-07-13 10:47:43,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:43,323 INFO L225 Difference]: With dead ends: 217 [2022-07-13 10:47:43,323 INFO L226 Difference]: Without dead ends: 166 [2022-07-13 10:47:43,324 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 [2022-07-13 10:47:43,324 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:47:43,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 258 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:47:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-13 10:47:43,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 159. [2022-07-13 10:47:43,334 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) [2022-07-13 10:47:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2022-07-13 10:47:43,336 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 65 [2022-07-13 10:47:43,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:43,336 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2022-07-13 10:47:43,336 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) [2022-07-13 10:47:43,336 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2022-07-13 10:47:43,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 10:47:43,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:43,337 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] [2022-07-13 10:47:43,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 10:47:43,542 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 [2022-07-13 10:47:43,542 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:43,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:43,542 INFO L85 PathProgramCache]: Analyzing trace with hash -615703001, now seen corresponding path program 1 times [2022-07-13 10:47:43,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:43,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102172168] [2022-07-13 10:47:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:43,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:43,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:43,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007594140] [2022-07-13 10:47:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:43,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:43,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:43,568 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) [2022-07-13 10:47:43,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 10:47:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:47:43,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 10:47:43,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-13 10:47:43,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:47:43,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:43,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102172168] [2022-07-13 10:47:43,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:47:43,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007594140] [2022-07-13 10:47:43,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007594140] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:47:43,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:47:43,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 10:47:43,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921380737] [2022-07-13 10:47:43,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:47:43,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 10:47:43,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:43,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 10:47:43,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:47:43,639 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) [2022-07-13 10:47:43,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:43,662 INFO L93 Difference]: Finished difference Result 276 states and 329 transitions. [2022-07-13 10:47:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 10:47:43,662 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 [2022-07-13 10:47:43,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:43,663 INFO L225 Difference]: With dead ends: 276 [2022-07-13 10:47:43,663 INFO L226 Difference]: Without dead ends: 160 [2022-07-13 10:47:43,664 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 [2022-07-13 10:47:43,664 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 [2022-07-13 10:47:43,664 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] [2022-07-13 10:47:43,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-13 10:47:43,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2022-07-13 10:47:43,673 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) [2022-07-13 10:47:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 181 transitions. [2022-07-13 10:47:43,674 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 181 transitions. Word has length 69 [2022-07-13 10:47:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:43,674 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 181 transitions. [2022-07-13 10:47:43,674 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) [2022-07-13 10:47:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 181 transitions. [2022-07-13 10:47:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 10:47:43,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:43,675 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] [2022-07-13 10:47:43,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 10:47:43,891 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 [2022-07-13 10:47:43,891 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:43,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:43,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1276732650, now seen corresponding path program 1 times [2022-07-13 10:47:43,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:43,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406007843] [2022-07-13 10:47:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:43,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:43,899 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:43,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408302429] [2022-07-13 10:47:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:43,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:43,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:43,914 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) [2022-07-13 10:47:43,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 10:47:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:47:43,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 10:47:43,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 10:47:44,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:47:44,217 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-13 10:47:44,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:44,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406007843] [2022-07-13 10:47:44,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:47:44,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408302429] [2022-07-13 10:47:44,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408302429] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:47:44,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:47:44,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2022-07-13 10:47:44,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800106326] [2022-07-13 10:47:44,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:47:44,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 10:47:44,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:44,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 10:47:44,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-07-13 10:47:44,219 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) [2022-07-13 10:47:44,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:44,517 INFO L93 Difference]: Finished difference Result 215 states and 242 transitions. [2022-07-13 10:47:44,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 10:47:44,517 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 [2022-07-13 10:47:44,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:44,518 INFO L225 Difference]: With dead ends: 215 [2022-07-13 10:47:44,518 INFO L226 Difference]: Without dead ends: 169 [2022-07-13 10:47:44,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2022-07-13 10:47:44,519 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 73 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-07-13 10:47:44,519 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] [2022-07-13 10:47:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-13 10:47:44,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2022-07-13 10:47:44,528 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) [2022-07-13 10:47:44,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 180 transitions. [2022-07-13 10:47:44,529 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 180 transitions. Word has length 69 [2022-07-13 10:47:44,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:44,529 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 180 transitions. [2022-07-13 10:47:44,529 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) [2022-07-13 10:47:44,529 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 180 transitions. [2022-07-13 10:47:44,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-13 10:47:44,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:44,530 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] [2022-07-13 10:47:44,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 10:47:44,735 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 [2022-07-13 10:47:44,735 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:44,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:44,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1130035513, now seen corresponding path program 6 times [2022-07-13 10:47:44,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:44,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390799148] [2022-07-13 10:47:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:44,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:44,742 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:44,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61621828] [2022-07-13 10:47:44,743 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 10:47:44,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:44,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:44,744 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) [2022-07-13 10:47:44,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 10:47:44,855 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-07-13 10:47:44,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:47:44,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 10:47:44,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:44,917 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-13 10:47:44,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:47:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-13 10:47:44,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:44,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390799148] [2022-07-13 10:47:44,974 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:47:44,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61621828] [2022-07-13 10:47:44,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61621828] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:47:44,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:47:44,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-07-13 10:47:44,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692193700] [2022-07-13 10:47:44,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:47:44,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 10:47:44,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:44,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 10:47:44,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-07-13 10:47:44,976 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) [2022-07-13 10:47:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:45,158 INFO L93 Difference]: Finished difference Result 175 states and 193 transitions. [2022-07-13 10:47:45,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 10:47:45,159 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 [2022-07-13 10:47:45,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:45,160 INFO L225 Difference]: With dead ends: 175 [2022-07-13 10:47:45,160 INFO L226 Difference]: Without dead ends: 77 [2022-07-13 10:47:45,160 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 [2022-07-13 10:47:45,161 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:47:45,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 161 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:47:45,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-13 10:47:45,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-07-13 10:47:45,164 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) [2022-07-13 10:47:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2022-07-13 10:47:45,165 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 70 [2022-07-13 10:47:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:45,165 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2022-07-13 10:47:45,165 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) [2022-07-13 10:47:45,165 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2022-07-13 10:47:45,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-13 10:47:45,166 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:45,166 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] [2022-07-13 10:47:45,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 10:47:45,383 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 [2022-07-13 10:47:45,383 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:45,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:45,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1478551406, now seen corresponding path program 7 times [2022-07-13 10:47:45,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:45,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492214656] [2022-07-13 10:47:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:45,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:45,390 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:45,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501964451] [2022-07-13 10:47:45,391 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 10:47:45,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:45,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:45,392 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) [2022-07-13 10:47:45,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 10:47:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:47:45,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 10:47:45,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 10:47:45,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:47:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 10:47:45,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:47:45,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492214656] [2022-07-13 10:47:45,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:47:45,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501964451] [2022-07-13 10:47:45,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501964451] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:47:45,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:47:45,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-13 10:47:45,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275127109] [2022-07-13 10:47:45,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:47:45,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 10:47:45,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:47:45,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 10:47:45,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-07-13 10:47:45,572 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) [2022-07-13 10:47:45,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:47:45,740 INFO L93 Difference]: Finished difference Result 157 states and 182 transitions. [2022-07-13 10:47:45,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 10:47:45,741 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 [2022-07-13 10:47:45,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:47:45,741 INFO L225 Difference]: With dead ends: 157 [2022-07-13 10:47:45,742 INFO L226 Difference]: Without dead ends: 109 [2022-07-13 10:47:45,742 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 [2022-07-13 10:47:45,743 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 [2022-07-13 10:47:45,743 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] [2022-07-13 10:47:45,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-13 10:47:45,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2022-07-13 10:47:45,748 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) [2022-07-13 10:47:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2022-07-13 10:47:45,749 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 71 [2022-07-13 10:47:45,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:47:45,749 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2022-07-13 10:47:45,749 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) [2022-07-13 10:47:45,749 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2022-07-13 10:47:45,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-13 10:47:45,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:47:45,750 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] [2022-07-13 10:47:45,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 10:47:45,950 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 [2022-07-13 10:47:45,950 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:47:45,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:47:45,951 INFO L85 PathProgramCache]: Analyzing trace with hash 599706749, now seen corresponding path program 8 times [2022-07-13 10:47:45,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:47:45,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532890717] [2022-07-13 10:47:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:47:45,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:47:45,960 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:47:45,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832883035] [2022-07-13 10:47:45,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:47:45,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:47:45,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:47:45,967 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) [2022-07-13 10:47:45,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 10:47:47,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 10:47:47,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:47:47,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 123 conjunts are in the unsatisfiable core [2022-07-13 10:47:47,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:47:47,474 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 [2022-07-13 10:47:47,478 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 [2022-07-13 10:47:47,485 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 [2022-07-13 10:47:47,533 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 [2022-07-13 10:47:47,546 INFO L356 Elim1Store]: treesize reduction 166, result has 9.3 percent of original size [2022-07-13 10:47:47,546 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 [2022-07-13 10:47:47,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:47,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:47:47,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:47:47,584 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 101 treesize of output 26 [2022-07-13 10:47:47,664 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 99 treesize of output 90 [2022-07-13 10:47:47,685 INFO L356 Elim1Store]: treesize reduction 362, result has 8.8 percent of original size [2022-07-13 10:47:47,686 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 89 treesize of output 160 [2022-07-13 10:47:47,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:47,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:47,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:47:47,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:47,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:47:47,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 48 [2022-07-13 10:47:47,865 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 114 treesize of output 103 [2022-07-13 10:47:47,905 INFO L356 Elim1Store]: treesize reduction 555, result has 8.0 percent of original size [2022-07-13 10:47:47,906 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 102 treesize of output 176 [2022-07-13 10:47:48,029 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 129 treesize of output 116 [2022-07-13 10:47:48,207 INFO L356 Elim1Store]: treesize reduction 772, result has 7.3 percent of original size [2022-07-13 10:47:48,207 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 115 treesize of output 192 [2022-07-13 10:47:48,216 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-13 10:47:48,476 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 223 treesize of output 208 [2022-07-13 10:47:48,605 INFO L356 Elim1Store]: treesize reduction 1024, result has 6.8 percent of original size [2022-07-13 10:47:48,605 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 760 treesize of output 827 [2022-07-13 10:47:49,075 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 130 [2022-07-13 10:47:49,369 INFO L356 Elim1Store]: treesize reduction 894, result has 5.8 percent of original size [2022-07-13 10:47:49,370 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 182 treesize of output 265 [2022-07-13 10:47:49,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:49,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:49,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:49,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:49,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:49,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:49,418 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 97 treesize of output 27 [2022-07-13 10:47:49,590 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 [2022-07-13 10:47:50,093 INFO L356 Elim1Store]: treesize reduction 1203, result has 5.6 percent of original size [2022-07-13 10:47:50,093 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 [2022-07-13 10:47:50,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:47:50,222 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 [2022-07-13 10:47:50,373 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 [2022-07-13 10:47:50,599 INFO L356 Elim1Store]: treesize reduction 1230, result has 6.0 percent of original size [2022-07-13 10:47:50,599 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 [2022-07-13 10:47:52,032 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 185 treesize of output 162 [2022-07-13 10:47:52,279 INFO L356 Elim1Store]: treesize reduction 1329, result has 7.5 percent of original size [2022-07-13 10:47:52,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 595 treesize of output 609 [2022-07-13 10:47:55,824 INFO L356 Elim1Store]: treesize reduction 1436, result has 10.1 percent of original size [2022-07-13 10:47:55,825 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 214 [2022-07-13 10:47:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 8 proven. 222 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:47:56,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:48:45,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:48:45,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532890717] [2022-07-13 10:48:45,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:48:45,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832883035] [2022-07-13 10:48:45,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832883035] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:48:45,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 10:48:45,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2022-07-13 10:48:45,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145128281] [2022-07-13 10:48:45,902 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 10:48:45,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-13 10:48:45,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:48:45,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-13 10:48:45,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=795, Invalid=4600, Unknown=7, NotChecked=0, Total=5402 [2022-07-13 10:48:45,904 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 49 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 49 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) [2022-07-13 10:48:49,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:48:49,419 INFO L93 Difference]: Finished difference Result 211 states and 242 transitions. [2022-07-13 10:48:49,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-07-13 10:48:49,420 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 49 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 [2022-07-13 10:48:49,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:48:49,420 INFO L225 Difference]: With dead ends: 211 [2022-07-13 10:48:49,421 INFO L226 Difference]: Without dead ends: 183 [2022-07-13 10:48:49,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 41 SyntacticMatches, 14 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3555 ImplicationChecksByTransitivity, 47.5s TimeCoverageRelationStatistics Valid=974, Invalid=5661, Unknown=7, NotChecked=0, Total=6642 [2022-07-13 10:48:49,422 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 60 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 347 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 10:48:49,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 395 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 880 Invalid, 0 Unknown, 347 Unchecked, 1.8s Time] [2022-07-13 10:48:49,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-13 10:48:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 159. [2022-07-13 10:48:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 144 states have (on average 1.1319444444444444) internal successors, (163), 144 states have internal predecessors, (163), 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) [2022-07-13 10:48:49,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 182 transitions. [2022-07-13 10:48:49,436 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 182 transitions. Word has length 89 [2022-07-13 10:48:49,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:48:49,436 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 182 transitions. [2022-07-13 10:48:49,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 49 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) [2022-07-13 10:48:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 182 transitions. [2022-07-13 10:48:49,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 10:48:49,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:48:49,437 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] [2022-07-13 10:48:49,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 10:48:49,649 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 [2022-07-13 10:48:49,649 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:48:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:48:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash 952826399, now seen corresponding path program 9 times [2022-07-13 10:48:49,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:48:49,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411719085] [2022-07-13 10:48:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:48:49,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:48:49,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:48:49,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225198776] [2022-07-13 10:48:49,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 10:48:49,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:48:49,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:48:49,659 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) [2022-07-13 10:48:49,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 10:48:50,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-13 10:48:50,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:48:50,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 10:48:50,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:48:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 62 proven. 59 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-13 10:48:50,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:48:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 37 proven. 84 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-13 10:48:50,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:48:50,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411719085] [2022-07-13 10:48:50,154 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:48:50,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225198776] [2022-07-13 10:48:50,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225198776] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:48:50,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:48:50,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-13 10:48:50,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717488935] [2022-07-13 10:48:50,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:48:50,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 10:48:50,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:48:50,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 10:48:50,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-13 10:48:50,155 INFO L87 Difference]: Start difference. First operand 159 states and 182 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) [2022-07-13 10:48:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:48:50,382 INFO L93 Difference]: Finished difference Result 394 states and 462 transitions. [2022-07-13 10:48:50,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 10:48:50,382 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 [2022-07-13 10:48:50,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:48:50,383 INFO L225 Difference]: With dead ends: 394 [2022-07-13 10:48:50,383 INFO L226 Difference]: Without dead ends: 271 [2022-07-13 10:48:50,384 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 [2022-07-13 10:48:50,384 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 166 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 10:48:50,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 224 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 10:48:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-13 10:48:50,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 216. [2022-07-13 10:48:50,399 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) [2022-07-13 10:48:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 248 transitions. [2022-07-13 10:48:50,400 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 248 transitions. Word has length 91 [2022-07-13 10:48:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:48:50,400 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 248 transitions. [2022-07-13 10:48:50,400 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) [2022-07-13 10:48:50,400 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 248 transitions. [2022-07-13 10:48:50,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 10:48:50,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:48:50,401 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] [2022-07-13 10:48:50,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 10:48:50,612 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 [2022-07-13 10:48:50,612 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:48:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:48:50,612 INFO L85 PathProgramCache]: Analyzing trace with hash -825002241, now seen corresponding path program 10 times [2022-07-13 10:48:50,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:48:50,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541117379] [2022-07-13 10:48:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:48:50,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:48:50,622 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:48:50,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831000087] [2022-07-13 10:48:50,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 10:48:50,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:48:50,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:48:50,623 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) [2022-07-13 10:48:50,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 10:48:50,688 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 10:48:50,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:48:50,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 10:48:50,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:48:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 88 proven. 41 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-13 10:48:50,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:48:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 73 proven. 48 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-13 10:48:50,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:48:50,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541117379] [2022-07-13 10:48:50,813 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:48:50,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831000087] [2022-07-13 10:48:50,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831000087] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:48:50,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:48:50,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-13 10:48:50,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319565706] [2022-07-13 10:48:50,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:48:50,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 10:48:50,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:48:50,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 10:48:50,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-13 10:48:50,815 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) [2022-07-13 10:48:51,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:48:51,071 INFO L93 Difference]: Finished difference Result 282 states and 319 transitions. [2022-07-13 10:48:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 10:48:51,071 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 [2022-07-13 10:48:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:48:51,072 INFO L225 Difference]: With dead ends: 282 [2022-07-13 10:48:51,073 INFO L226 Difference]: Without dead ends: 214 [2022-07-13 10:48:51,073 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 [2022-07-13 10:48:51,074 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 76 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 10:48:51,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 280 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 10:48:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-13 10:48:51,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 205. [2022-07-13 10:48:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 183 states have (on average 1.1038251366120218) internal successors, (202), 183 states have internal predecessors, (202), 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) [2022-07-13 10:48:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 231 transitions. [2022-07-13 10:48:51,096 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 231 transitions. Word has length 91 [2022-07-13 10:48:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:48:51,096 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 231 transitions. [2022-07-13 10:48:51,096 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) [2022-07-13 10:48:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 231 transitions. [2022-07-13 10:48:51,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 10:48:51,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:48:51,097 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] [2022-07-13 10:48:51,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 10:48:51,311 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 [2022-07-13 10:48:51,311 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:48:51,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:48:51,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2080469951, now seen corresponding path program 2 times [2022-07-13 10:48:51,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:48:51,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136979717] [2022-07-13 10:48:51,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:48:51,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:48:51,320 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:48:51,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585202825] [2022-07-13 10:48:51,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:48:51,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:48:51,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:48:51,321 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) [2022-07-13 10:48:51,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 10:48:53,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 10:48:53,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:48:53,148 WARN L261 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 143 conjunts are in the unsatisfiable core [2022-07-13 10:48:53,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:48:53,180 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 [2022-07-13 10:48:53,183 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 [2022-07-13 10:48:53,187 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 [2022-07-13 10:48:53,231 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 78 treesize of output 71 [2022-07-13 10:48:53,243 INFO L356 Elim1Store]: treesize reduction 152, result has 9.0 percent of original size [2022-07-13 10:48:53,243 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 70 treesize of output 138 [2022-07-13 10:48:53,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:48:53,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:48:53,256 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 78 treesize of output 3 [2022-07-13 10:48:53,315 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 99 treesize of output 90 [2022-07-13 10:48:53,347 INFO L356 Elim1Store]: treesize reduction 362, result has 8.8 percent of original size [2022-07-13 10:48:53,348 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 89 treesize of output 160 [2022-07-13 10:48:53,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:53,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:48:53,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:48:53,389 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 101 treesize of output 24 [2022-07-13 10:48:53,550 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 [2022-07-13 10:48:53,597 INFO L356 Elim1Store]: treesize reduction 303, result has 6.2 percent of original size [2022-07-13 10:48:53,597 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 [2022-07-13 10:48:53,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:53,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:53,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:53,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:53,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:53,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:53,647 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 98 treesize of output 26 [2022-07-13 10:48:53,744 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 105 treesize of output 92 [2022-07-13 10:48:53,819 INFO L356 Elim1Store]: treesize reduction 532, result has 6.5 percent of original size [2022-07-13 10:48:53,819 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 91 treesize of output 168 [2022-07-13 10:48:53,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:53,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 3 [2022-07-13 10:48:53,960 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 [2022-07-13 10:48:54,107 INFO L356 Elim1Store]: treesize reduction 676, result has 6.5 percent of original size [2022-07-13 10:48:54,107 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 [2022-07-13 10:48:54,405 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 127 treesize of output 110 [2022-07-13 10:48:54,599 INFO L356 Elim1Store]: treesize reduction 894, result has 5.8 percent of original size [2022-07-13 10:48:54,599 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 109 treesize of output 192 [2022-07-13 10:48:54,620 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-13 10:48:55,001 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 306 treesize of output 287 [2022-07-13 10:48:55,383 INFO L356 Elim1Store]: treesize reduction 1203, result has 5.6 percent of original size [2022-07-13 10:48:55,384 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 783 treesize of output 869 [2022-07-13 10:48:55,795 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-13 10:48:56,360 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 284 treesize of output 263 [2022-07-13 10:48:56,822 INFO L356 Elim1Store]: treesize reduction 1382, result has 5.6 percent of original size [2022-07-13 10:48:56,822 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 1119 treesize of output 1179 [2022-07-13 10:48:57,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:57,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:57,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:57,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:57,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:57,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:57,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:57,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:57,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:57,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:48:57,093 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 100 treesize of output 43 [2022-07-13 10:50:12,739 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 198 treesize of output 171 [2022-07-13 10:50:14,067 INFO L356 Elim1Store]: treesize reduction 1978, result has 4.5 percent of original size [2022-07-13 10:50:14,068 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 170 treesize of output 239 [2022-07-13 10:50:22,722 INFO L356 Elim1Store]: treesize reduction 1430, result has 10.5 percent of original size [2022-07-13 10:50:22,722 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 [2022-07-13 10:50:23,517 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 8 proven. 224 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 10:50:23,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:51:33,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:51:33,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136979717] [2022-07-13 10:51:33,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:51:33,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585202825] [2022-07-13 10:51:33,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585202825] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:51:33,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 10:51:33,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2022-07-13 10:51:33,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427952391] [2022-07-13 10:51:33,618 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 10:51:33,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-07-13 10:51:33,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:51:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-07-13 10:51:33,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=5921, Unknown=20, NotChecked=0, Total=6806 [2022-07-13 10:51:33,620 INFO L87 Difference]: Start difference. First operand 205 states and 231 transitions. Second operand has 57 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 54 states have internal predecessors, (81), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-13 10:51:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:51:46,189 INFO L93 Difference]: Finished difference Result 346 states and 390 transitions. [2022-07-13 10:51:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-07-13 10:51:46,189 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 54 states have internal predecessors, (81), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 95 [2022-07-13 10:51:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:51:46,190 INFO L225 Difference]: With dead ends: 346 [2022-07-13 10:51:46,190 INFO L226 Difference]: Without dead ends: 340 [2022-07-13 10:51:46,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 41 SyntacticMatches, 12 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5015 ImplicationChecksByTransitivity, 151.3s TimeCoverageRelationStatistics Valid=1721, Invalid=10248, Unknown=21, NotChecked=0, Total=11990 [2022-07-13 10:51:46,193 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 149 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 783 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 10:51:46,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 606 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1465 Invalid, 0 Unknown, 783 Unchecked, 3.3s Time] [2022-07-13 10:51:46,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-07-13 10:51:46,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 248. [2022-07-13 10:51:46,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 214 states have (on average 1.1074766355140186) internal successors, (237), 216 states have internal predecessors, (237), 19 states have call successors, (19), 11 states have call predecessors, (19), 14 states have return successors, (27), 20 states have call predecessors, (27), 19 states have call successors, (27) [2022-07-13 10:51:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 283 transitions. [2022-07-13 10:51:46,227 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 283 transitions. Word has length 95 [2022-07-13 10:51:46,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:51:46,227 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 283 transitions. [2022-07-13 10:51:46,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 54 states have internal predecessors, (81), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-13 10:51:46,227 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 283 transitions. [2022-07-13 10:51:46,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 10:51:46,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:51:46,229 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] [2022-07-13 10:51:46,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 10:51:46,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 10:51:46,435 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:51:46,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:51:46,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1370491843, now seen corresponding path program 1 times [2022-07-13 10:51:46,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:51:46,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340008707] [2022-07-13 10:51:46,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:51:46,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:51:46,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:51:46,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660426512] [2022-07-13 10:51:46,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:51:46,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:51:46,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:51:46,449 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:51:46,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 10:51:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:51:46,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 10:51:46,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:51:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-07-13 10:51:46,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:51:46,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:51:46,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340008707] [2022-07-13 10:51:46,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:51:46,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660426512] [2022-07-13 10:51:46,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660426512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:51:46,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:51:46,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 10:51:46,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471152747] [2022-07-13 10:51:46,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:51:46,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 10:51:46,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:51:46,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 10:51:46,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:51:46,538 INFO L87 Difference]: Start difference. First operand 248 states and 283 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-13 10:51:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:51:46,578 INFO L93 Difference]: Finished difference Result 372 states and 425 transitions. [2022-07-13 10:51:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 10:51:46,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 95 [2022-07-13 10:51:46,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:51:46,579 INFO L225 Difference]: With dead ends: 372 [2022-07-13 10:51:46,579 INFO L226 Difference]: Without dead ends: 256 [2022-07-13 10:51:46,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 10:51:46,580 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:51:46,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 166 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:51:46,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-07-13 10:51:46,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 250. [2022-07-13 10:51:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 216 states have (on average 1.1018518518518519) internal successors, (238), 216 states have internal predecessors, (238), 19 states have call successors, (19), 11 states have call predecessors, (19), 14 states have return successors, (27), 22 states have call predecessors, (27), 19 states have call successors, (27) [2022-07-13 10:51:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 284 transitions. [2022-07-13 10:51:46,602 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 284 transitions. Word has length 95 [2022-07-13 10:51:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:51:46,602 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 284 transitions. [2022-07-13 10:51:46,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-13 10:51:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 284 transitions. [2022-07-13 10:51:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 10:51:46,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:51:46,603 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 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] [2022-07-13 10:51:46,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-13 10:51:46,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:51:46,813 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:51:46,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:51:46,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1291813762, now seen corresponding path program 1 times [2022-07-13 10:51:46,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:51:46,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751924744] [2022-07-13 10:51:46,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:51:46,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:51:46,821 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:51:46,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484554991] [2022-07-13 10:51:46,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:51:46,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:51:46,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:51:46,823 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:51:46,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 10:51:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:51:46,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 10:51:46,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:51:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-07-13 10:51:46,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:51:46,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:51:46,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751924744] [2022-07-13 10:51:46,912 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:51:46,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484554991] [2022-07-13 10:51:46,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484554991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:51:46,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:51:46,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 10:51:46,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259373104] [2022-07-13 10:51:46,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:51:46,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 10:51:46,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:51:46,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 10:51:46,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:51:46,913 INFO L87 Difference]: Start difference. First operand 250 states and 284 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-13 10:51:46,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:51:46,949 INFO L93 Difference]: Finished difference Result 370 states and 420 transitions. [2022-07-13 10:51:46,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 10:51:46,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 95 [2022-07-13 10:51:46,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:51:46,950 INFO L225 Difference]: With dead ends: 370 [2022-07-13 10:51:46,950 INFO L226 Difference]: Without dead ends: 252 [2022-07-13 10:51:46,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 10:51:46,951 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 2 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:51:46,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 176 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:51:46,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-07-13 10:51:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 250. [2022-07-13 10:51:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 216 states have (on average 1.0925925925925926) internal successors, (236), 216 states have internal predecessors, (236), 19 states have call successors, (19), 11 states have call predecessors, (19), 14 states have return successors, (27), 22 states have call predecessors, (27), 19 states have call successors, (27) [2022-07-13 10:51:46,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 282 transitions. [2022-07-13 10:51:46,975 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 282 transitions. Word has length 95 [2022-07-13 10:51:46,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:51:46,975 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 282 transitions. [2022-07-13 10:51:46,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-13 10:51:46,976 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 282 transitions. [2022-07-13 10:51:46,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 10:51:46,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:51:46,977 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 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] [2022-07-13 10:51:46,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-13 10:51:47,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:51:47,187 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:51:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:51:47,188 INFO L85 PathProgramCache]: Analyzing trace with hash 447808260, now seen corresponding path program 1 times [2022-07-13 10:51:47,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:51:47,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696992239] [2022-07-13 10:51:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:51:47,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:51:47,204 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:51:47,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516221402] [2022-07-13 10:51:47,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:51:47,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:51:47,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:51:47,206 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:51:47,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 10:51:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:51:47,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 142 conjunts are in the unsatisfiable core [2022-07-13 10:51:47,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:51:47,874 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 [2022-07-13 10:51:47,877 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 [2022-07-13 10:51:47,886 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 [2022-07-13 10:51:47,938 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 [2022-07-13 10:51:47,953 INFO L356 Elim1Store]: treesize reduction 166, result has 9.3 percent of original size [2022-07-13 10:51:47,953 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 [2022-07-13 10:51:47,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:47,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:47,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:47,993 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 103 treesize of output 26 [2022-07-13 10:51:48,084 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 [2022-07-13 10:51:48,109 INFO L356 Elim1Store]: treesize reduction 322, result has 8.5 percent of original size [2022-07-13 10:51:48,109 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 [2022-07-13 10:51:48,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:48,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:48,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:48,124 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 91 treesize of output 20 [2022-07-13 10:51:48,341 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 [2022-07-13 10:51:48,429 INFO L356 Elim1Store]: treesize reduction 303, result has 6.2 percent of original size [2022-07-13 10:51:48,430 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 [2022-07-13 10:51:48,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:48,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:48,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:48,440 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 87 treesize of output 14 [2022-07-13 10:51:48,596 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 105 treesize of output 92 [2022-07-13 10:51:48,758 INFO L356 Elim1Store]: treesize reduction 532, result has 6.5 percent of original size [2022-07-13 10:51:48,758 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 91 treesize of output 168 [2022-07-13 10:51:49,014 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 139 treesize of output 124 [2022-07-13 10:51:49,180 INFO L356 Elim1Store]: treesize reduction 676, result has 6.5 percent of original size [2022-07-13 10:51:49,181 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 202 treesize of output 274 [2022-07-13 10:51:49,222 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-13 10:51:49,679 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 130 [2022-07-13 10:51:49,910 INFO L356 Elim1Store]: treesize reduction 894, result has 5.8 percent of original size [2022-07-13 10:51:49,910 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 287 treesize of output 366 [2022-07-13 10:51:49,956 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-13 10:51:50,690 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 274 treesize of output 255 [2022-07-13 10:51:50,928 INFO L356 Elim1Store]: treesize reduction 1203, result has 5.6 percent of original size [2022-07-13 10:51:50,929 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 660 treesize of output 746 [2022-07-13 10:51:51,995 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 232 treesize of output 211 [2022-07-13 10:51:52,367 INFO L356 Elim1Store]: treesize reduction 1382, result has 5.6 percent of original size [2022-07-13 10:51:52,367 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 610 treesize of output 687 [2022-07-13 10:51:52,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:52,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 97