./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.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/nla-digbench-scaling/freire1_unwindbound1.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 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:00:44,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:00:44,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:00:45,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:00:45,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:00:45,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:00:45,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:00:45,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:00:45,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:00:45,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:00:45,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:00:45,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:00:45,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:00:45,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:00:45,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:00:45,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:00:45,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:00:45,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:00:45,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:00:45,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:00:45,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:00:45,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:00:45,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:00:45,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:00:45,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:00:45,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:00:45,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:00:45,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:00:45,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:00:45,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:00:45,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:00:45,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:00:45,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:00:45,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:00:45,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:00:45,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:00:45,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:00:45,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:00:45,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:00:45,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:00:45,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:00:45,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:00:45,139 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:00:45,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:00:45,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:00:45,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:00:45,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:00:45,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:00:45,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:00:45,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:00:45,141 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:00:45,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:00:45,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:00:45,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:00:45,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:00:45,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:00:45,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:00:45,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:00:45,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:00:45,142 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:00:45,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:00:45,142 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:00:45,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:00:45,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:00:45,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:00:45,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:00:45,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:00:45,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:00:45,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:00:45,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:00:45,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:00:45,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:00:45,143 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:00:45,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:00:45,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:00:45,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:00:45,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2021-12-15 11:00:45,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:00:45,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:00:45,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:00:45,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:00:45,547 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:00:45,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-12-15 11:00:45,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e528b8a2/ff848d4d040247038e13a644a5e363c1/FLAG3300a72e1 [2021-12-15 11:00:46,200 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:00:46,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-12-15 11:00:46,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e528b8a2/ff848d4d040247038e13a644a5e363c1/FLAG3300a72e1 [2021-12-15 11:00:46,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e528b8a2/ff848d4d040247038e13a644a5e363c1 [2021-12-15 11:00:46,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:00:46,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:00:46,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:00:46,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:00:46,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:00:46,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:00:46" (1/1) ... [2021-12-15 11:00:46,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3ae67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:46, skipping insertion in model container [2021-12-15 11:00:46,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:00:46" (1/1) ... [2021-12-15 11:00:46,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:00:46,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:00:46,832 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/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2021-12-15 11:00:46,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:00:46,859 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:00:46,869 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/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2021-12-15 11:00:46,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:00:46,886 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:00:46,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:46 WrapperNode [2021-12-15 11:00:46,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:00:46,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:00:46,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:00:46,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:00:46,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:46" (1/1) ... [2021-12-15 11:00:46,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:46" (1/1) ... [2021-12-15 11:00:46,909 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2021-12-15 11:00:46,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:00:46,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:00:46,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:00:46,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:00:46,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:46" (1/1) ... [2021-12-15 11:00:46,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:46" (1/1) ... [2021-12-15 11:00:46,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:46" (1/1) ... [2021-12-15 11:00:46,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:46" (1/1) ... [2021-12-15 11:00:46,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:46" (1/1) ... [2021-12-15 11:00:46,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:46" (1/1) ... [2021-12-15 11:00:46,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:46" (1/1) ... [2021-12-15 11:00:46,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:00:46,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:00:46,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:00:46,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:00:46,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:46" (1/1) ... [2021-12-15 11:00:46,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:00:46,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:00:46,995 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 11:00:47,013 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 11:00:47,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:00:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:00:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:00:47,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:00:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:00:47,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:00:47,069 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:00:47,070 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:00:47,141 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:00:47,145 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:00:47,146 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:00:47,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:00:47 BoogieIcfgContainer [2021-12-15 11:00:47,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:00:47,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:00:47,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:00:47,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:00:47,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:00:46" (1/3) ... [2021-12-15 11:00:47,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a5a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:00:47, skipping insertion in model container [2021-12-15 11:00:47,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:46" (2/3) ... [2021-12-15 11:00:47,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a5a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:00:47, skipping insertion in model container [2021-12-15 11:00:47,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:00:47" (3/3) ... [2021-12-15 11:00:47,153 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2021-12-15 11:00:47,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:00:47,157 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:00:47,219 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:00:47,240 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 11:00:47,240 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:00:47,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 11:00:47,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 11:00:47,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:00:47,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:00:47,256 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:00:47,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:00:47,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2021-12-15 11:00:47,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:00:47,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124972744] [2021-12-15 11:00:47,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:00:47,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:00:47,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:00:47,322 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.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) 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 11:00:47,325 INFO L158 Benchmark]: Toolchain (without parser) took 778.04ms. Allocated memory is still 113.2MB. Free memory was 77.4MB in the beginning and 67.5MB in the end (delta: 9.9MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-12-15 11:00:47,326 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 113.2MB. Free memory was 87.0MB in the beginning and 86.9MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:00:47,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.05ms. Allocated memory is still 113.2MB. Free memory was 77.3MB in the beginning and 88.6MB in the end (delta: -11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:00:47,327 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.37ms. Allocated memory is still 113.2MB. Free memory was 88.6MB in the beginning and 87.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:00:47,328 INFO L158 Benchmark]: Boogie Preprocessor took 38.09ms. Allocated memory is still 113.2MB. Free memory was 87.5MB in the beginning and 86.5MB in the end (delta: 999.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:00:47,328 INFO L158 Benchmark]: RCFGBuilder took 198.72ms. Allocated memory is still 113.2MB. Free memory was 86.5MB in the beginning and 77.5MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:00:47,329 INFO L158 Benchmark]: TraceAbstraction took 175.92ms. Allocated memory is still 113.2MB. Free memory was 77.0MB in the beginning and 67.5MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:00:47,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 113.2MB. Free memory was 87.0MB in the beginning and 86.9MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.05ms. Allocated memory is still 113.2MB. Free memory was 77.3MB in the beginning and 88.6MB in the end (delta: -11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.37ms. Allocated memory is still 113.2MB. Free memory was 88.6MB in the beginning and 87.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.09ms. Allocated memory is still 113.2MB. Free memory was 87.5MB in the beginning and 86.5MB in the end (delta: 999.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 198.72ms. Allocated memory is still 113.2MB. Free memory was 86.5MB in the beginning and 77.5MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 175.92ms. Allocated memory is still 113.2MB. Free memory was 77.0MB in the beginning and 67.5MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. 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 11:00:47,382 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 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/nla-digbench-scaling/freire1_unwindbound1.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 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:00:49,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:00:49,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:00:49,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:00:49,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:00:49,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:00:49,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:00:49,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:00:49,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:00:49,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:00:49,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:00:49,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:00:49,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:00:49,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:00:49,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:00:49,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:00:49,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:00:49,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:00:49,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:00:49,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:00:49,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:00:49,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:00:49,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:00:49,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:00:49,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:00:49,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:00:49,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:00:49,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:00:49,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:00:49,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:00:49,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:00:49,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:00:49,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:00:49,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:00:49,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:00:49,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:00:49,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:00:49,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:00:49,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:00:49,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:00:49,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:00:49,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:00:49,290 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:00:49,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:00:49,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:00:49,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:00:49,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:00:49,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:00:49,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:00:49,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:00:49,293 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:00:49,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:00:49,293 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:00:49,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:00:49,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:00:49,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:00:49,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:00:49,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:00:49,294 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:00:49,295 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:00:49,295 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:00:49,295 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:00:49,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:00:49,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:00:49,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:00:49,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:00:49,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:00:49,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:00:49,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:00:49,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:00:49,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:00:49,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:00:49,297 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:00:49,297 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:00:49,297 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:00:49,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:00:49,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:00:49,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:00:49,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:00:49,298 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2021-12-15 11:00:49,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:00:49,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:00:49,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:00:49,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:00:49,532 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:00:49,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-12-15 11:00:49,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564582643/da0bfba986dc483bab4417b6b2d49763/FLAG0c3833b9e [2021-12-15 11:00:49,984 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:00:49,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-12-15 11:00:49,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564582643/da0bfba986dc483bab4417b6b2d49763/FLAG0c3833b9e [2021-12-15 11:00:50,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564582643/da0bfba986dc483bab4417b6b2d49763 [2021-12-15 11:00:50,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:00:50,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:00:50,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:00:50,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:00:50,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:00:50,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:00:50" (1/1) ... [2021-12-15 11:00:50,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee9b6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:50, skipping insertion in model container [2021-12-15 11:00:50,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:00:50" (1/1) ... [2021-12-15 11:00:50,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:00:50,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:00:50,143 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/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2021-12-15 11:00:50,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:00:50,161 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:00:50,195 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/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2021-12-15 11:00:50,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:00:50,212 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:00:50,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:50 WrapperNode [2021-12-15 11:00:50,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:00:50,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:00:50,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:00:50,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:00:50,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:50" (1/1) ... [2021-12-15 11:00:50,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:50" (1/1) ... [2021-12-15 11:00:50,245 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2021-12-15 11:00:50,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:00:50,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:00:50,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:00:50,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:00:50,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:50" (1/1) ... [2021-12-15 11:00:50,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:50" (1/1) ... [2021-12-15 11:00:50,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:50" (1/1) ... [2021-12-15 11:00:50,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:50" (1/1) ... [2021-12-15 11:00:50,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:50" (1/1) ... [2021-12-15 11:00:50,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:50" (1/1) ... [2021-12-15 11:00:50,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:50" (1/1) ... [2021-12-15 11:00:50,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:00:50,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:00:50,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:00:50,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:00:50,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:50" (1/1) ... [2021-12-15 11:00:50,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:00:50,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:00:50,304 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 11:00:50,314 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 11:00:50,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:00:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:00:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:00:50,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:00:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:00:50,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:00:50,376 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:00:50,377 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:00:51,053 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:00:51,058 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:00:51,059 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:00:51,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:00:51 BoogieIcfgContainer [2021-12-15 11:00:51,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:00:51,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:00:51,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:00:51,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:00:51,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:00:50" (1/3) ... [2021-12-15 11:00:51,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1d7d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:00:51, skipping insertion in model container [2021-12-15 11:00:51,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:00:50" (2/3) ... [2021-12-15 11:00:51,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1d7d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:00:51, skipping insertion in model container [2021-12-15 11:00:51,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:00:51" (3/3) ... [2021-12-15 11:00:51,066 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2021-12-15 11:00:51,070 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:00:51,070 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:00:51,116 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:00:51,123 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 11:00:51,124 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:00:51,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 11:00:51,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 11:00:51,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:00:51,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:00:51,156 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:00:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:00:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2021-12-15 11:00:51,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:00:51,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209104121] [2021-12-15 11:00:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:00:51,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:00:51,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:00:51,184 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 11:00:51,185 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 11:00:51,241 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 11:00:51,426 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 11:00:51,427 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.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) 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 11:00:51,432 INFO L158 Benchmark]: Toolchain (without parser) took 1416.50ms. Allocated memory is still 60.8MB. Free memory was 45.4MB in the beginning and 37.1MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:00:51,433 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 29.3MB in the beginning and 29.3MB in the end (delta: 36.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:00:51,434 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.74ms. Allocated memory is still 60.8MB. Free memory was 45.3MB in the beginning and 43.6MB in the end (delta: 1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 11:00:51,434 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.68ms. Allocated memory is still 60.8MB. Free memory was 43.6MB in the beginning and 42.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:00:51,435 INFO L158 Benchmark]: Boogie Preprocessor took 34.15ms. Allocated memory is still 60.8MB. Free memory was 42.2MB in the beginning and 41.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:00:51,435 INFO L158 Benchmark]: RCFGBuilder took 779.07ms. Allocated memory is still 60.8MB. Free memory was 41.0MB in the beginning and 32.2MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:00:51,436 INFO L158 Benchmark]: TraceAbstraction took 368.39ms. Allocated memory is still 60.8MB. Free memory was 31.9MB in the beginning and 37.1MB in the end (delta: -5.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:00:51,442 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 48.2MB. Free memory was 29.3MB in the beginning and 29.3MB in the end (delta: 36.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.74ms. Allocated memory is still 60.8MB. Free memory was 45.3MB in the beginning and 43.6MB in the end (delta: 1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.68ms. Allocated memory is still 60.8MB. Free memory was 43.6MB in the beginning and 42.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.15ms. Allocated memory is still 60.8MB. Free memory was 42.2MB in the beginning and 41.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 779.07ms. Allocated memory is still 60.8MB. Free memory was 41.0MB in the beginning and 32.2MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 368.39ms. Allocated memory is still 60.8MB. Free memory was 31.9MB in the beginning and 37.1MB in the end (delta: -5.2MB). There was no memory consumed. 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 11:00:51,489 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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable