./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_copyInitSum3_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_copyInitSum3_ground.i -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 9e3997a2a1cd8cbe038fe2c0a5bc044283ed06667aa7ef42f046d1134291f84e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 21:48:37,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 21:48:37,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 21:48:37,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 21:48:37,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 21:48:37,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 21:48:37,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 21:48:37,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 21:48:37,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 21:48:37,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 21:48:37,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 21:48:37,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 21:48:37,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 21:48:37,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 21:48:37,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 21:48:37,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 21:48:37,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 21:48:37,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 21:48:37,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 21:48:37,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 21:48:37,132 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 21:48:37,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 21:48:37,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 21:48:37,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 21:48:37,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 21:48:37,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 21:48:37,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 21:48:37,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 21:48:37,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 21:48:37,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 21:48:37,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 21:48:37,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 21:48:37,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 21:48:37,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 21:48:37,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 21:48:37,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 21:48:37,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 21:48:37,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 21:48:37,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 21:48:37,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 21:48:37,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 21:48:37,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 21:48:37,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 21:48:37,156 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 21:48:37,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 21:48:37,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 21:48:37,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 21:48:37,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 21:48:37,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 21:48:37,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 21:48:37,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 21:48:37,159 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 21:48:37,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 21:48:37,161 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 21:48:37,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 21:48:37,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 21:48:37,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 21:48:37,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 21:48:37,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 21:48:37,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 21:48:37,162 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 21:48:37,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 21:48:37,162 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 21:48:37,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 21:48:37,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 21:48:37,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 21:48:37,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 21:48:37,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 21:48:37,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 21:48:37,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 21:48:37,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 21:48:37,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 21:48:37,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 21:48:37,164 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 21:48:37,165 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 21:48:37,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 21:48:37,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e3997a2a1cd8cbe038fe2c0a5bc044283ed06667aa7ef42f046d1134291f84e [2022-07-11 21:48:37,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 21:48:37,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 21:48:37,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 21:48:37,400 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 21:48:37,402 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 21:48:37,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_copyInitSum3_ground.i [2022-07-11 21:48:37,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08f7570d/6cb0c94ee720421fa4b0e2a1307bceef/FLAGfd7e66930 [2022-07-11 21:48:37,820 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 21:48:37,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copyInitSum3_ground.i [2022-07-11 21:48:37,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08f7570d/6cb0c94ee720421fa4b0e2a1307bceef/FLAGfd7e66930 [2022-07-11 21:48:37,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08f7570d/6cb0c94ee720421fa4b0e2a1307bceef [2022-07-11 21:48:37,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 21:48:37,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 21:48:37,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 21:48:37,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 21:48:37,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 21:48:37,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 09:48:37" (1/1) ... [2022-07-11 21:48:37,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ca4282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 09:48:37, skipping insertion in model container [2022-07-11 21:48:37,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 09:48:37" (1/1) ... [2022-07-11 21:48:37,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 21:48:37,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 21:48:37,991 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-examples/standard_copyInitSum3_ground.i[821,834] [2022-07-11 21:48:38,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 21:48:38,015 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 21:48:38,027 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-examples/standard_copyInitSum3_ground.i[821,834] [2022-07-11 21:48:38,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 21:48:38,044 INFO L208 MainTranslator]: Completed translation [2022-07-11 21:48:38,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 09:48:38 WrapperNode [2022-07-11 21:48:38,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 21:48:38,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 21:48:38,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 21:48:38,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 21:48:38,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 09:48:38" (1/1) ... [2022-07-11 21:48:38,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 09:48:38" (1/1) ... [2022-07-11 21:48:38,074 INFO L137 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2022-07-11 21:48:38,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 21:48:38,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 21:48:38,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 21:48:38,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 21:48:38,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 09:48:38" (1/1) ... [2022-07-11 21:48:38,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 09:48:38" (1/1) ... [2022-07-11 21:48:38,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 09:48:38" (1/1) ... [2022-07-11 21:48:38,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 09:48:38" (1/1) ... [2022-07-11 21:48:38,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 09:48:38" (1/1) ... [2022-07-11 21:48:38,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 09:48:38" (1/1) ... [2022-07-11 21:48:38,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 09:48:38" (1/1) ... [2022-07-11 21:48:38,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 21:48:38,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 21:48:38,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 21:48:38,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 21:48:38,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 09:48:38" (1/1) ... [2022-07-11 21:48:38,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 21:48:38,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 21:48:38,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-11 21:48:38,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-11 21:48:38,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 21:48:38,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 21:48:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-11 21:48:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 21:48:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 21:48:38,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 21:48:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 21:48:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-11 21:48:38,181 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 21:48:38,182 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 21:48:38,265 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 21:48:38,269 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 21:48:38,269 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-11 21:48:38,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 09:48:38 BoogieIcfgContainer [2022-07-11 21:48:38,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 21:48:38,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 21:48:38,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 21:48:38,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 21:48:38,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 09:48:37" (1/3) ... [2022-07-11 21:48:38,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1186e208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 09:48:38, skipping insertion in model container [2022-07-11 21:48:38,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 09:48:38" (2/3) ... [2022-07-11 21:48:38,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1186e208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 09:48:38, skipping insertion in model container [2022-07-11 21:48:38,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 09:48:38" (3/3) ... [2022-07-11 21:48:38,305 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum3_ground.i [2022-07-11 21:48:38,315 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 21:48:38,315 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 21:48:38,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 21:48:38,372 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@71cc80a4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@499e9719 [2022-07-11 21:48:38,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 21:48:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-11 21:48:38,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 21:48:38,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 21:48:38,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 21:48:38,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 21:48:38,389 INFO L85 PathProgramCache]: Analyzing trace with hash -211808190, now seen corresponding path program 1 times [2022-07-11 21:48:38,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 21:48:38,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530137753] [2022-07-11 21:48:38,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 21:48:38,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 21:48:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 21:48:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 21:48:38,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 21:48:38,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530137753] [2022-07-11 21:48:38,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530137753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 21:48:38,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 21:48:38,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 21:48:38,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100102938] [2022-07-11 21:48:38,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 21:48:38,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 21:48:38,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 21:48:38,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 21:48:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 21:48:38,581 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:38,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 21:48:38,658 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2022-07-11 21:48:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 21:48:38,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-11 21:48:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 21:48:38,666 INFO L225 Difference]: With dead ends: 50 [2022-07-11 21:48:38,667 INFO L226 Difference]: Without dead ends: 26 [2022-07-11 21:48:38,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 21:48:38,678 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 21:48:38,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 21:48:38,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-11 21:48:38,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-07-11 21:48:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:38,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-07-11 21:48:38,708 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2022-07-11 21:48:38,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 21:48:38,708 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-07-11 21:48:38,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-07-11 21:48:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-11 21:48:38,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 21:48:38,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 21:48:38,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 21:48:38,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 21:48:38,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 21:48:38,714 INFO L85 PathProgramCache]: Analyzing trace with hash 343774103, now seen corresponding path program 1 times [2022-07-11 21:48:38,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 21:48:38,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729509516] [2022-07-11 21:48:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 21:48:38,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 21:48:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 21:48:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-11 21:48:38,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 21:48:38,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729509516] [2022-07-11 21:48:38,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729509516] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 21:48:38,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539657883] [2022-07-11 21:48:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 21:48:38,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 21:48:38,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 21:48:38,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 21:48:38,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-11 21:48:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 21:48:38,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-11 21:48:38,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 21:48:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-11 21:48:38,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 21:48:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-11 21:48:38,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539657883] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 21:48:38,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 21:48:38,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-11 21:48:38,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415642119] [2022-07-11 21:48:38,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 21:48:38,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 21:48:38,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 21:48:38,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 21:48:38,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-11 21:48:38,942 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 21:48:39,042 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2022-07-11 21:48:39,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 21:48:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-11 21:48:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 21:48:39,047 INFO L225 Difference]: With dead ends: 63 [2022-07-11 21:48:39,047 INFO L226 Difference]: Without dead ends: 44 [2022-07-11 21:48:39,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-11 21:48:39,049 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 21:48:39,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 40 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 21:48:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-11 21:48:39,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-07-11 21:48:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-07-11 21:48:39,069 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 20 [2022-07-11 21:48:39,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 21:48:39,069 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-07-11 21:48:39,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:39,070 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-07-11 21:48:39,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-11 21:48:39,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 21:48:39,072 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 21:48:39,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-11 21:48:39,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 21:48:39,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 21:48:39,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 21:48:39,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1712584598, now seen corresponding path program 2 times [2022-07-11 21:48:39,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 21:48:39,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731011150] [2022-07-11 21:48:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 21:48:39,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 21:48:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 21:48:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-11 21:48:39,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 21:48:39,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731011150] [2022-07-11 21:48:39,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731011150] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 21:48:39,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026838668] [2022-07-11 21:48:39,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 21:48:39,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 21:48:39,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 21:48:39,376 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 21:48:39,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-11 21:48:39,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 21:48:39,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 21:48:39,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 21:48:39,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 21:48:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-11 21:48:39,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 21:48:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-11 21:48:39,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026838668] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 21:48:39,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 21:48:39,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-07-11 21:48:39,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53525396] [2022-07-11 21:48:39,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 21:48:39,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-11 21:48:39,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 21:48:39,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-11 21:48:39,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-11 21:48:39,524 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:39,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 21:48:39,671 INFO L93 Difference]: Finished difference Result 123 states and 154 transitions. [2022-07-11 21:48:39,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-11 21:48:39,671 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-11 21:48:39,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 21:48:39,673 INFO L225 Difference]: With dead ends: 123 [2022-07-11 21:48:39,673 INFO L226 Difference]: Without dead ends: 86 [2022-07-11 21:48:39,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-11 21:48:39,677 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 54 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 21:48:39,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 48 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 21:48:39,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-11 21:48:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-07-11 21:48:39,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2022-07-11 21:48:39,692 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 41 [2022-07-11 21:48:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 21:48:39,693 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2022-07-11 21:48:39,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2022-07-11 21:48:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-11 21:48:39,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 21:48:39,695 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 21:48:39,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-11 21:48:39,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-11 21:48:39,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 21:48:39,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 21:48:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash -108691546, now seen corresponding path program 3 times [2022-07-11 21:48:39,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 21:48:39,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16654765] [2022-07-11 21:48:39,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 21:48:39,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 21:48:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 21:48:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-11 21:48:40,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 21:48:40,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16654765] [2022-07-11 21:48:40,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16654765] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 21:48:40,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426443352] [2022-07-11 21:48:40,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 21:48:40,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 21:48:40,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 21:48:40,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 21:48:40,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-11 21:48:40,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-11 21:48:40,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 21:48:40,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-11 21:48:40,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 21:48:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-11 21:48:40,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 21:48:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-11 21:48:40,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426443352] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 21:48:40,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 21:48:40,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-07-11 21:48:40,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221148035] [2022-07-11 21:48:40,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 21:48:40,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-11 21:48:40,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 21:48:40,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-11 21:48:40,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-11 21:48:40,803 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:41,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 21:48:41,053 INFO L93 Difference]: Finished difference Result 243 states and 298 transitions. [2022-07-11 21:48:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-11 21:48:41,054 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-11 21:48:41,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 21:48:41,055 INFO L225 Difference]: With dead ends: 243 [2022-07-11 21:48:41,055 INFO L226 Difference]: Without dead ends: 170 [2022-07-11 21:48:41,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-11 21:48:41,056 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 180 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 21:48:41,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 40 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 21:48:41,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-11 21:48:41,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-07-11 21:48:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.029585798816568) internal successors, (174), 169 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 174 transitions. [2022-07-11 21:48:41,065 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 174 transitions. Word has length 83 [2022-07-11 21:48:41,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 21:48:41,066 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 174 transitions. [2022-07-11 21:48:41,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:41,066 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 174 transitions. [2022-07-11 21:48:41,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-11 21:48:41,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 21:48:41,069 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 21:48:41,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-11 21:48:41,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 21:48:41,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 21:48:41,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 21:48:41,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1893487586, now seen corresponding path program 4 times [2022-07-11 21:48:41,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 21:48:41,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356992994] [2022-07-11 21:48:41,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 21:48:41,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 21:48:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 21:48:41,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-07-11 21:48:41,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 21:48:41,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356992994] [2022-07-11 21:48:41,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356992994] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 21:48:41,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755714384] [2022-07-11 21:48:41,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-11 21:48:41,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 21:48:41,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 21:48:41,616 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 21:48:41,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-11 21:48:41,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-11 21:48:41,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 21:48:41,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-11 21:48:41,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 21:48:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2022-07-11 21:48:41,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 21:48:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2022-07-11 21:48:42,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755714384] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 21:48:42,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 21:48:42,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-07-11 21:48:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998752203] [2022-07-11 21:48:42,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 21:48:42,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-11 21:48:42,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 21:48:42,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-11 21:48:42,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-11 21:48:42,438 INFO L87 Difference]: Start difference. First operand 170 states and 174 transitions. Second operand has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:42,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 21:48:42,917 INFO L93 Difference]: Finished difference Result 483 states and 586 transitions. [2022-07-11 21:48:42,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-11 21:48:42,917 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2022-07-11 21:48:42,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 21:48:42,919 INFO L225 Difference]: With dead ends: 483 [2022-07-11 21:48:42,919 INFO L226 Difference]: Without dead ends: 338 [2022-07-11 21:48:42,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-11 21:48:42,921 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 353 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 21:48:42,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 48 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 21:48:42,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-07-11 21:48:42,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2022-07-11 21:48:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.0148367952522255) internal successors, (342), 337 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:42,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 342 transitions. [2022-07-11 21:48:42,948 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 342 transitions. Word has length 167 [2022-07-11 21:48:42,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 21:48:42,948 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 342 transitions. [2022-07-11 21:48:42,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 21:48:42,949 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 342 transitions. [2022-07-11 21:48:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-07-11 21:48:42,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 21:48:42,952 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 21:48:42,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-11 21:48:43,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 21:48:43,170 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 21:48:43,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 21:48:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1914240270, now seen corresponding path program 5 times [2022-07-11 21:48:43,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 21:48:43,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198766131] [2022-07-11 21:48:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 21:48:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 21:48:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 21:48:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6348 trivial. 0 not checked. [2022-07-11 21:48:44,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 21:48:44,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198766131] [2022-07-11 21:48:44,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198766131] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 21:48:44,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702416886] [2022-07-11 21:48:44,116 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-11 21:48:44,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 21:48:44,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 21:48:44,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 21:48:44,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process