./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/pnr2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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-tiling/pnr2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67f3347d26557d25fb6343192d3c90918276f96e14a8e5c63bb68c9eaee65f5f --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 08:38:10,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 08:38:10,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 08:38:10,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 08:38:10,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 08:38:10,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 08:38:10,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 08:38:10,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 08:38:10,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 08:38:10,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 08:38:10,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 08:38:10,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 08:38:10,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 08:38:10,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 08:38:10,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 08:38:10,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 08:38:10,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 08:38:10,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 08:38:10,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 08:38:10,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 08:38:10,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 08:38:10,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 08:38:10,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 08:38:10,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 08:38:10,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 08:38:10,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 08:38:10,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 08:38:10,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 08:38:10,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 08:38:10,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 08:38:10,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 08:38:10,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 08:38:10,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 08:38:10,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 08:38:10,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 08:38:10,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 08:38:10,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 08:38:10,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 08:38:10,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 08:38:10,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 08:38:10,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 08:38:10,634 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 08:38:10,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 08:38:10,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 08:38:10,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 08:38:10,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 08:38:10,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 08:38:10,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 08:38:10,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 08:38:10,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 08:38:10,666 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 08:38:10,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 08:38:10,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 08:38:10,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 08:38:10,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 08:38:10,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 08:38:10,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 08:38:10,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 08:38:10,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 08:38:10,668 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 08:38:10,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 08:38:10,668 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 08:38:10,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 08:38:10,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 08:38:10,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 08:38:10,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 08:38:10,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:38:10,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 08:38:10,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 08:38:10,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 08:38:10,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 08:38:10,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 08:38:10,671 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 08:38:10,671 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 08:38:10,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 08:38:10,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 08:38:10,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67f3347d26557d25fb6343192d3c90918276f96e14a8e5c63bb68c9eaee65f5f [2021-12-15 08:38:10,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 08:38:10,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 08:38:10,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 08:38:10,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 08:38:10,873 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 08:38:10,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/pnr2.c [2021-12-15 08:38:10,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4534399d1/9ce2c7edf98748dc8a0b2cf9ad57a2ab/FLAG693e0e506 [2021-12-15 08:38:11,296 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 08:38:11,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/pnr2.c [2021-12-15 08:38:11,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4534399d1/9ce2c7edf98748dc8a0b2cf9ad57a2ab/FLAG693e0e506 [2021-12-15 08:38:11,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4534399d1/9ce2c7edf98748dc8a0b2cf9ad57a2ab [2021-12-15 08:38:11,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 08:38:11,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 08:38:11,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 08:38:11,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 08:38:11,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 08:38:11,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:38:11" (1/1) ... [2021-12-15 08:38:11,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ed4078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:11, skipping insertion in model container [2021-12-15 08:38:11,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:38:11" (1/1) ... [2021-12-15 08:38:11,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 08:38:11,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 08:38:11,456 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-tiling/pnr2.c[395,408] [2021-12-15 08:38:11,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:38:11,490 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 08:38:11,498 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-tiling/pnr2.c[395,408] [2021-12-15 08:38:11,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:38:11,515 INFO L208 MainTranslator]: Completed translation [2021-12-15 08:38:11,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:11 WrapperNode [2021-12-15 08:38:11,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 08:38:11,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 08:38:11,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 08:38:11,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 08:38:11,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:11" (1/1) ... [2021-12-15 08:38:11,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:11" (1/1) ... [2021-12-15 08:38:11,539 INFO L137 Inliner]: procedures = 17, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2021-12-15 08:38:11,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 08:38:11,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 08:38:11,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 08:38:11,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 08:38:11,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:11" (1/1) ... [2021-12-15 08:38:11,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:11" (1/1) ... [2021-12-15 08:38:11,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:11" (1/1) ... [2021-12-15 08:38:11,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:11" (1/1) ... [2021-12-15 08:38:11,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:11" (1/1) ... [2021-12-15 08:38:11,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:11" (1/1) ... [2021-12-15 08:38:11,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:11" (1/1) ... [2021-12-15 08:38:11,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 08:38:11,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 08:38:11,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 08:38:11,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 08:38:11,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:11" (1/1) ... [2021-12-15 08:38:11,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:38:11,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:38:11,579 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) [2021-12-15 08:38:11,595 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 [2021-12-15 08:38:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 08:38:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 08:38:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 08:38:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 08:38:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure ReadFromPort [2021-12-15 08:38:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadFromPort [2021-12-15 08:38:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 08:38:11,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 08:38:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 08:38:11,668 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 08:38:11,669 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 08:38:11,807 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 08:38:11,820 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 08:38:11,821 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 08:38:11,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:38:11 BoogieIcfgContainer [2021-12-15 08:38:11,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 08:38:11,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 08:38:11,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 08:38:11,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 08:38:11,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:38:11" (1/3) ... [2021-12-15 08:38:11,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3754f7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:38:11, skipping insertion in model container [2021-12-15 08:38:11,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:11" (2/3) ... [2021-12-15 08:38:11,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3754f7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:38:11, skipping insertion in model container [2021-12-15 08:38:11,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:38:11" (3/3) ... [2021-12-15 08:38:11,839 INFO L111 eAbstractionObserver]: Analyzing ICFG pnr2.c [2021-12-15 08:38:11,843 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 08:38:11,843 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 08:38:11,872 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 08:38:11,876 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 [2021-12-15 08:38:11,877 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 08:38:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 08:38:11,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 08:38:11,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:38:11,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:38:11,892 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:38:11,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:38:11,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1808077575, now seen corresponding path program 1 times [2021-12-15 08:38:11,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:38:11,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494434610] [2021-12-15 08:38:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:38:11,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:38:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:38:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:38:12,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:38:12,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494434610] [2021-12-15 08:38:12,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494434610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:38:12,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:38:12,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 08:38:12,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406338913] [2021-12-15 08:38:12,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:38:12,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 08:38:12,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:38:12,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 08:38:12,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-15 08:38:12,161 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-12-15 08:38:12,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 08:38:12,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-15 08:38:12,202 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:38:12,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:38:12,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 08:38:12,205 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 08:38:12,210 INFO L158 Benchmark]: Toolchain (without parser) took 892.09ms. Allocated memory is still 96.5MB. Free memory was 62.7MB in the beginning and 35.3MB in the end (delta: 27.4MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2021-12-15 08:38:12,211 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 96.5MB. Free memory was 67.9MB in the beginning and 67.9MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 08:38:12,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.24ms. Allocated memory is still 96.5MB. Free memory was 62.5MB in the beginning and 73.0MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 08:38:12,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.80ms. Allocated memory is still 96.5MB. Free memory was 73.0MB in the beginning and 71.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 08:38:12,236 INFO L158 Benchmark]: Boogie Preprocessor took 15.58ms. Allocated memory is still 96.5MB. Free memory was 71.3MB in the beginning and 70.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 08:38:12,237 INFO L158 Benchmark]: RCFGBuilder took 266.30ms. Allocated memory is still 96.5MB. Free memory was 70.1MB in the beginning and 59.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 08:38:12,237 INFO L158 Benchmark]: TraceAbstraction took 385.51ms. Allocated memory is still 96.5MB. Free memory was 58.8MB in the beginning and 35.3MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-15 08:38:12,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 96.5MB. Free memory was 67.9MB in the beginning and 67.9MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.24ms. Allocated memory is still 96.5MB. Free memory was 62.5MB in the beginning and 73.0MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.80ms. Allocated memory is still 96.5MB. Free memory was 73.0MB in the beginning and 71.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.58ms. Allocated memory is still 96.5MB. Free memory was 71.3MB in the beginning and 70.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 266.30ms. Allocated memory is still 96.5MB. Free memory was 70.1MB in the beginning and 59.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 385.51ms. Allocated memory is still 96.5MB. Free memory was 58.8MB in the beginning and 35.3MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 08:38:12,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-tiling/pnr2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 67f3347d26557d25fb6343192d3c90918276f96e14a8e5c63bb68c9eaee65f5f --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 08:38:13,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 08:38:13,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 08:38:13,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 08:38:13,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 08:38:13,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 08:38:13,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 08:38:13,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 08:38:13,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 08:38:13,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 08:38:13,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 08:38:13,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 08:38:13,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 08:38:13,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 08:38:13,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 08:38:13,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 08:38:13,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 08:38:13,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 08:38:13,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 08:38:13,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 08:38:13,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 08:38:13,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 08:38:13,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 08:38:13,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 08:38:14,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 08:38:14,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 08:38:14,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 08:38:14,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 08:38:14,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 08:38:14,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 08:38:14,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 08:38:14,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 08:38:14,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 08:38:14,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 08:38:14,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 08:38:14,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 08:38:14,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 08:38:14,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 08:38:14,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 08:38:14,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 08:38:14,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 08:38:14,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 08:38:14,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 08:38:14,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 08:38:14,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 08:38:14,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 08:38:14,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 08:38:14,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 08:38:14,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 08:38:14,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 08:38:14,046 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 08:38:14,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 08:38:14,046 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 08:38:14,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 08:38:14,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 08:38:14,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 08:38:14,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 08:38:14,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 08:38:14,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 08:38:14,048 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 08:38:14,048 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 08:38:14,048 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 08:38:14,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 08:38:14,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 08:38:14,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 08:38:14,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 08:38:14,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 08:38:14,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 08:38:14,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:38:14,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 08:38:14,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 08:38:14,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 08:38:14,056 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 08:38:14,057 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 08:38:14,057 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 08:38:14,057 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 08:38:14,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 08:38:14,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 08:38:14,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 08:38:14,058 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67f3347d26557d25fb6343192d3c90918276f96e14a8e5c63bb68c9eaee65f5f [2021-12-15 08:38:14,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 08:38:14,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 08:38:14,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 08:38:14,319 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 08:38:14,320 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 08:38:14,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/pnr2.c [2021-12-15 08:38:14,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed13b070/5fa3813e71d142828682e828fdd7060a/FLAG10a7f276b [2021-12-15 08:38:14,745 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 08:38:14,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/pnr2.c [2021-12-15 08:38:14,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed13b070/5fa3813e71d142828682e828fdd7060a/FLAG10a7f276b [2021-12-15 08:38:14,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed13b070/5fa3813e71d142828682e828fdd7060a [2021-12-15 08:38:14,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 08:38:14,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 08:38:14,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 08:38:14,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 08:38:14,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 08:38:14,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:38:14" (1/1) ... [2021-12-15 08:38:14,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70eee2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:14, skipping insertion in model container [2021-12-15 08:38:14,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:38:14" (1/1) ... [2021-12-15 08:38:14,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 08:38:14,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 08:38:14,874 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-tiling/pnr2.c[395,408] [2021-12-15 08:38:14,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:38:14,899 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 08:38:14,922 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-tiling/pnr2.c[395,408] [2021-12-15 08:38:14,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:38:14,950 INFO L208 MainTranslator]: Completed translation [2021-12-15 08:38:14,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:14 WrapperNode [2021-12-15 08:38:14,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 08:38:14,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 08:38:14,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 08:38:14,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 08:38:14,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:14" (1/1) ... [2021-12-15 08:38:14,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:14" (1/1) ... [2021-12-15 08:38:14,975 INFO L137 Inliner]: procedures = 19, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-12-15 08:38:14,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 08:38:14,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 08:38:14,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 08:38:14,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 08:38:14,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:14" (1/1) ... [2021-12-15 08:38:14,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:14" (1/1) ... [2021-12-15 08:38:14,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:14" (1/1) ... [2021-12-15 08:38:14,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:14" (1/1) ... [2021-12-15 08:38:14,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:14" (1/1) ... [2021-12-15 08:38:15,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:14" (1/1) ... [2021-12-15 08:38:15,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:14" (1/1) ... [2021-12-15 08:38:15,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 08:38:15,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 08:38:15,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 08:38:15,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 08:38:15,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:14" (1/1) ... [2021-12-15 08:38:15,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:38:15,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:38:15,031 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) [2021-12-15 08:38:15,044 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 [2021-12-15 08:38:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 08:38:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 08:38:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 08:38:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 08:38:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure ReadFromPort [2021-12-15 08:38:15,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadFromPort [2021-12-15 08:38:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 08:38:15,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 08:38:15,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 08:38:15,145 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 08:38:15,146 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 08:38:15,292 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 08:38:15,296 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 08:38:15,296 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 08:38:15,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:38:15 BoogieIcfgContainer [2021-12-15 08:38:15,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 08:38:15,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 08:38:15,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 08:38:15,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 08:38:15,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:38:14" (1/3) ... [2021-12-15 08:38:15,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f33cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:38:15, skipping insertion in model container [2021-12-15 08:38:15,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:38:14" (2/3) ... [2021-12-15 08:38:15,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f33cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:38:15, skipping insertion in model container [2021-12-15 08:38:15,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:38:15" (3/3) ... [2021-12-15 08:38:15,302 INFO L111 eAbstractionObserver]: Analyzing ICFG pnr2.c [2021-12-15 08:38:15,305 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 08:38:15,305 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 08:38:15,334 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 08:38:15,338 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 [2021-12-15 08:38:15,338 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 08:38:15,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 08:38:15,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 08:38:15,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:38:15,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:38:15,357 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:38:15,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:38:15,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1808077575, now seen corresponding path program 1 times [2021-12-15 08:38:15,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 08:38:15,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314684404] [2021-12-15 08:38:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:38:15,369 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 08:38:15,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 08:38:15,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 08:38:15,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 08:38:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:38:15,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 08:38:15,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:38:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:38:15,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 08:38:15,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 08:38:15,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314684404] [2021-12-15 08:38:15,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314684404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:38:15,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:38:15,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 08:38:15,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078025921] [2021-12-15 08:38:15,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:38:15,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 08:38:15,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 08:38:15,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 08:38:15,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 08:38:15,620 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-12-15 08:38:15,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 08:38:15,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-15 08:38:15,681 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:38:15,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 19 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:38:15,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 08:38:15,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 08:38:15,890 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 08:38:15,893 INFO L158 Benchmark]: Toolchain (without parser) took 1128.54ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 33.2MB in the beginning and 34.7MB in the end (delta: -1.4MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2021-12-15 08:38:15,894 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 08:38:15,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.72ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 33.0MB in the beginning and 51.7MB in the end (delta: -18.7MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2021-12-15 08:38:15,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.41ms. Allocated memory is still 69.2MB. Free memory was 51.7MB in the beginning and 49.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 08:38:15,897 INFO L158 Benchmark]: Boogie Preprocessor took 31.71ms. Allocated memory is still 69.2MB. Free memory was 49.9MB in the beginning and 48.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 08:38:15,898 INFO L158 Benchmark]: RCFGBuilder took 288.47ms. Allocated memory is still 69.2MB. Free memory was 48.5MB in the beginning and 37.5MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 08:38:15,898 INFO L158 Benchmark]: TraceAbstraction took 593.56ms. Allocated memory is still 69.2MB. Free memory was 37.1MB in the beginning and 34.7MB in the end (delta: 2.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-12-15 08:38:15,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.72ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 33.0MB in the beginning and 51.7MB in the end (delta: -18.7MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.41ms. Allocated memory is still 69.2MB. Free memory was 51.7MB in the beginning and 49.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.71ms. Allocated memory is still 69.2MB. Free memory was 49.9MB in the beginning and 48.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 288.47ms. Allocated memory is still 69.2MB. Free memory was 48.5MB in the beginning and 37.5MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 593.56ms. Allocated memory is still 69.2MB. Free memory was 37.1MB in the beginning and 34.7MB in the end (delta: 2.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 08:38:15,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable