./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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-industry-pattern/array_of_struct_ptr_cond_init.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 d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 09:51:36,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 09:51:36,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 09:51:36,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 09:51:36,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 09:51:36,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 09:51:36,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 09:51:36,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 09:51:36,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 09:51:36,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 09:51:36,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 09:51:36,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 09:51:36,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 09:51:36,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 09:51:36,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 09:51:36,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 09:51:36,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 09:51:36,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 09:51:36,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 09:51:36,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 09:51:36,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 09:51:36,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 09:51:36,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 09:51:36,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 09:51:36,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 09:51:36,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 09:51:36,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 09:51:36,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 09:51:36,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 09:51:36,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 09:51:36,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 09:51:36,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 09:51:36,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 09:51:36,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 09:51:36,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 09:51:36,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 09:51:36,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 09:51:36,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 09:51:36,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 09:51:36,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 09:51:36,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 09:51:36,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 09:51:36,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 09:51:36,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 09:51:36,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 09:51:36,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 09:51:36,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 09:51:36,906 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 09:51:36,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 09:51:36,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 09:51:36,907 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 09:51:36,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 09:51:36,908 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 09:51:36,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 09:51:36,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 09:51:36,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 09:51:36,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 09:51:36,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 09:51:36,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 09:51:36,909 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 09:51:36,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 09:51:36,910 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 09:51:36,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 09:51:36,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 09:51:36,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 09:51:36,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 09:51:36,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 09:51:36,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 09:51:36,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 09:51:36,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 09:51:36,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 09:51:36,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 09:51:36,913 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 09:51:36,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 09:51:36,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 09:51:36,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 09:51:36,914 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e [2021-12-21 09:51:37,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 09:51:37,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 09:51:37,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 09:51:37,147 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 09:51:37,148 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 09:51:37,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2021-12-21 09:51:37,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e619003e/6b469981a7fd4b32b604750c80bd5358/FLAGadc1c4132 [2021-12-21 09:51:37,646 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 09:51:37,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2021-12-21 09:51:37,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e619003e/6b469981a7fd4b32b604750c80bd5358/FLAGadc1c4132 [2021-12-21 09:51:37,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e619003e/6b469981a7fd4b32b604750c80bd5358 [2021-12-21 09:51:37,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 09:51:37,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 09:51:37,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 09:51:37,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 09:51:37,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 09:51:37,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:51:37" (1/1) ... [2021-12-21 09:51:37,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41cb0c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:37, skipping insertion in model container [2021-12-21 09:51:37,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:51:37" (1/1) ... [2021-12-21 09:51:37,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 09:51:37,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 09:51:37,832 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-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2021-12-21 09:51:37,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 09:51:37,858 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 09:51:37,873 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-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2021-12-21 09:51:37,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 09:51:37,909 INFO L208 MainTranslator]: Completed translation [2021-12-21 09:51:37,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:37 WrapperNode [2021-12-21 09:51:37,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 09:51:37,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 09:51:37,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 09:51:37,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 09:51:37,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:37" (1/1) ... [2021-12-21 09:51:37,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:37" (1/1) ... [2021-12-21 09:51:37,955 INFO L137 Inliner]: procedures = 20, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2021-12-21 09:51:37,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 09:51:37,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 09:51:37,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 09:51:37,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 09:51:37,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:37" (1/1) ... [2021-12-21 09:51:37,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:37" (1/1) ... [2021-12-21 09:51:37,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:37" (1/1) ... [2021-12-21 09:51:37,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:37" (1/1) ... [2021-12-21 09:51:37,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:37" (1/1) ... [2021-12-21 09:51:37,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:37" (1/1) ... [2021-12-21 09:51:37,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:37" (1/1) ... [2021-12-21 09:51:37,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 09:51:38,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 09:51:38,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 09:51:38,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 09:51:38,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:37" (1/1) ... [2021-12-21 09:51:38,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 09:51:38,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 09:51:38,036 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) [2021-12-21 09:51:38,063 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 [2021-12-21 09:51:38,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 09:51:38,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 09:51:38,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 09:51:38,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 09:51:38,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 09:51:38,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 09:51:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 09:51:38,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 09:51:38,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 09:51:38,187 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 09:51:38,188 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 09:51:38,385 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 09:51:38,389 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 09:51:38,390 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 09:51:38,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:51:38 BoogieIcfgContainer [2021-12-21 09:51:38,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 09:51:38,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 09:51:38,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 09:51:38,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 09:51:38,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:51:37" (1/3) ... [2021-12-21 09:51:38,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5197586d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:51:38, skipping insertion in model container [2021-12-21 09:51:38,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:37" (2/3) ... [2021-12-21 09:51:38,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5197586d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:51:38, skipping insertion in model container [2021-12-21 09:51:38,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:51:38" (3/3) ... [2021-12-21 09:51:38,398 INFO L111 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_cond_init.i [2021-12-21 09:51:38,402 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 09:51:38,415 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 09:51:38,484 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 09:51:38,494 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 09:51:38,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 09:51:38,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 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) [2021-12-21 09:51:38,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 09:51:38,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 09:51:38,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 09:51:38,527 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 09:51:38,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 09:51:38,533 INFO L85 PathProgramCache]: Analyzing trace with hash 650130346, now seen corresponding path program 1 times [2021-12-21 09:51:38,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 09:51:38,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521476333] [2021-12-21 09:51:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:51:38,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 09:51:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:51:38,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:38,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 09:51:38,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521476333] [2021-12-21 09:51:38,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521476333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 09:51:38,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 09:51:38,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 09:51:38,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698794011] [2021-12-21 09:51:38,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 09:51:38,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 09:51:38,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 09:51:38,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 09:51:38,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 09:51:38,728 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-21 09:51:38,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 09:51:38,741 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2021-12-21 09:51:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 09:51:38,744 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-12-21 09:51:38,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 09:51:38,750 INFO L225 Difference]: With dead ends: 31 [2021-12-21 09:51:38,750 INFO L226 Difference]: Without dead ends: 15 [2021-12-21 09:51:38,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 09:51:38,757 INFO L933 BasicCegarLoop]: 22 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, 22 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 [2021-12-21 09:51:38,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 09:51:38,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-21 09:51:38,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-21 09:51:38,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2021-12-21 09:51:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-12-21 09:51:38,785 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 8 [2021-12-21 09:51:38,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 09:51:38,785 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-12-21 09:51:38,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-21 09:51:38,786 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-12-21 09:51:38,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 09:51:38,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 09:51:38,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 09:51:38,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 09:51:38,787 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 09:51:38,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 09:51:38,789 INFO L85 PathProgramCache]: Analyzing trace with hash 220693081, now seen corresponding path program 1 times [2021-12-21 09:51:38,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 09:51:38,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161516487] [2021-12-21 09:51:38,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:51:38,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 09:51:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:51:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:38,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 09:51:38,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161516487] [2021-12-21 09:51:38,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161516487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 09:51:38,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 09:51:38,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 09:51:38,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421784326] [2021-12-21 09:51:38,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 09:51:38,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 09:51:38,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 09:51:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 09:51:38,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 09:51:38,883 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-21 09:51:38,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 09:51:38,921 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2021-12-21 09:51:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 09:51:38,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-12-21 09:51:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 09:51:38,923 INFO L225 Difference]: With dead ends: 35 [2021-12-21 09:51:38,923 INFO L226 Difference]: Without dead ends: 27 [2021-12-21 09:51:38,923 INFO L932 BasicCegarLoop]: 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 [2021-12-21 09:51:38,924 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 09:51:38,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 23 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 09:51:38,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-21 09:51:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2021-12-21 09:51:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2021-12-21 09:51:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-12-21 09:51:38,931 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2021-12-21 09:51:38,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 09:51:38,932 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-12-21 09:51:38,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-21 09:51:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-12-21 09:51:38,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-21 09:51:38,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 09:51:38,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 09:51:38,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 09:51:38,935 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 09:51:38,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 09:51:38,937 INFO L85 PathProgramCache]: Analyzing trace with hash 702319140, now seen corresponding path program 1 times [2021-12-21 09:51:38,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 09:51:38,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118089612] [2021-12-21 09:51:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:51:38,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 09:51:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:51:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:39,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 09:51:39,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118089612] [2021-12-21 09:51:39,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118089612] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 09:51:39,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523984715] [2021-12-21 09:51:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:51:39,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 09:51:39,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 09:51:39,063 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) [2021-12-21 09:51:39,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 09:51:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:51:39,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 09:51:39,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 09:51:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:39,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 09:51:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:39,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523984715] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 09:51:39,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 09:51:39,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-21 09:51:39,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724442127] [2021-12-21 09:51:39,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 09:51:39,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 09:51:39,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 09:51:39,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 09:51:39,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-21 09:51:39,269 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-12-21 09:51:39,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 09:51:39,333 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2021-12-21 09:51:39,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 09:51:39,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 [2021-12-21 09:51:39,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 09:51:39,336 INFO L225 Difference]: With dead ends: 61 [2021-12-21 09:51:39,336 INFO L226 Difference]: Without dead ends: 53 [2021-12-21 09:51:39,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-21 09:51:39,339 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 48 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 09:51:39,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 53 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 09:51:39,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-21 09:51:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 31. [2021-12-21 09:51:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 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) [2021-12-21 09:51:39,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-12-21 09:51:39,352 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 13 [2021-12-21 09:51:39,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 09:51:39,352 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-12-21 09:51:39,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-12-21 09:51:39,352 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2021-12-21 09:51:39,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-21 09:51:39,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 09:51:39,354 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 09:51:39,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 09:51:39,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 09:51:39,568 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 09:51:39,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 09:51:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash -239814631, now seen corresponding path program 2 times [2021-12-21 09:51:39,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 09:51:39,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9772470] [2021-12-21 09:51:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:51:39,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 09:51:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:51:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:39,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 09:51:39,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9772470] [2021-12-21 09:51:39,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9772470] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 09:51:39,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557492455] [2021-12-21 09:51:39,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 09:51:39,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 09:51:39,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 09:51:39,702 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) [2021-12-21 09:51:39,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 09:51:39,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 09:51:39,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 09:51:39,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 09:51:39,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 09:51:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:39,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 09:51:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:39,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557492455] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 09:51:39,993 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 09:51:39,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-21 09:51:39,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670373790] [2021-12-21 09:51:39,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 09:51:39,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 09:51:39,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 09:51:39,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 09:51:39,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-21 09:51:39,996 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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) [2021-12-21 09:51:40,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 09:51:40,081 INFO L93 Difference]: Finished difference Result 133 states and 161 transitions. [2021-12-21 09:51:40,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 09:51:40,082 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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 28 [2021-12-21 09:51:40,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 09:51:40,083 INFO L225 Difference]: With dead ends: 133 [2021-12-21 09:51:40,083 INFO L226 Difference]: Without dead ends: 125 [2021-12-21 09:51:40,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-21 09:51:40,084 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 224 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 09:51:40,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 97 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 09:51:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-21 09:51:40,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 61. [2021-12-21 09:51:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 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) [2021-12-21 09:51:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2021-12-21 09:51:40,092 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 28 [2021-12-21 09:51:40,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 09:51:40,093 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2021-12-21 09:51:40,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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) [2021-12-21 09:51:40,093 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2021-12-21 09:51:40,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-21 09:51:40,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 09:51:40,094 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 09:51:40,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 09:51:40,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-21 09:51:40,304 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 09:51:40,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 09:51:40,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1867076793, now seen corresponding path program 3 times [2021-12-21 09:51:40,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 09:51:40,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68714909] [2021-12-21 09:51:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:51:40,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 09:51:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:51:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:40,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 09:51:40,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68714909] [2021-12-21 09:51:40,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68714909] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 09:51:40,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992825836] [2021-12-21 09:51:40,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 09:51:40,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 09:51:40,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 09:51:40,592 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) [2021-12-21 09:51:40,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process