./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.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/hard2_valuebound20.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 1619c1c02ba7c9b660af32e6427e3b3d5cd6ca3ff286b9db386918ae0c8b508c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:02:04,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:02:04,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:02:04,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:02:04,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:02:05,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:02:05,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:02:05,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:02:05,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:02:05,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:02:05,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:02:05,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:02:05,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:02:05,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:02:05,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:02:05,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:02:05,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:02:05,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:02:05,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:02:05,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:02:05,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:02:05,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:02:05,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:02:05,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:02:05,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:02:05,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:02:05,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:02:05,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:02:05,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:02:05,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:02:05,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:02:05,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:02:05,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:02:05,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:02:05,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:02:05,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:02:05,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:02:05,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:02:05,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:02:05,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:02:05,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:02:05,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:02:05,147 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:02:05,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:02:05,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:02:05,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:02:05,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:02:05,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:02:05,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:02:05,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:02:05,150 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:02:05,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:02:05,151 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:02:05,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:02:05,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:02:05,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:02:05,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:02:05,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:02:05,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:02:05,152 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:02:05,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:02:05,152 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:02:05,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:02:05,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:02:05,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:02:05,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:02:05,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:02:05,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:02:05,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:02:05,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:02:05,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:02:05,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:02:05,155 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:02:05,155 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:02:05,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:02:05,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:02:05,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1619c1c02ba7c9b660af32e6427e3b3d5cd6ca3ff286b9db386918ae0c8b508c [2021-12-15 11:02:05,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:02:05,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:02:05,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:02:05,627 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:02:05,628 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:02:05,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c [2021-12-15 11:02:05,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/457491104/ce25f8bf8fde48ddaea7c07a9a5c78dd/FLAGa0e808ff2 [2021-12-15 11:02:06,307 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:02:06,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c [2021-12-15 11:02:06,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/457491104/ce25f8bf8fde48ddaea7c07a9a5c78dd/FLAGa0e808ff2 [2021-12-15 11:02:06,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/457491104/ce25f8bf8fde48ddaea7c07a9a5c78dd [2021-12-15 11:02:06,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:02:06,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:02:06,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:02:06,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:02:06,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:02:06,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:02:06" (1/1) ... [2021-12-15 11:02:06,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9b2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:06, skipping insertion in model container [2021-12-15 11:02:06,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:02:06" (1/1) ... [2021-12-15 11:02:06,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:02:06,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:02:06,841 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/hard2_valuebound20.c[526,539] [2021-12-15 11:02:06,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:02:06,880 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:02:06,896 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/hard2_valuebound20.c[526,539] [2021-12-15 11:02:06,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:02:06,935 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:02:06,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:06 WrapperNode [2021-12-15 11:02:06,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:02:06,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:02:06,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:02:06,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:02:06,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:06" (1/1) ... [2021-12-15 11:02:06,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:06" (1/1) ... [2021-12-15 11:02:06,980 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2021-12-15 11:02:06,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:02:06,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:02:06,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:02:06,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:02:06,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:06" (1/1) ... [2021-12-15 11:02:06,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:06" (1/1) ... [2021-12-15 11:02:07,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:06" (1/1) ... [2021-12-15 11:02:07,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:06" (1/1) ... [2021-12-15 11:02:07,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:06" (1/1) ... [2021-12-15 11:02:07,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:06" (1/1) ... [2021-12-15 11:02:07,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:06" (1/1) ... [2021-12-15 11:02:07,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:02:07,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:02:07,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:02:07,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:02:07,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:06" (1/1) ... [2021-12-15 11:02:07,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:02:07,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:02:07,054 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 11:02:07,083 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 11:02:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:02:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:02:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:02:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:02:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:02:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:02:07,215 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:02:07,216 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:02:07,384 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:02:07,395 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:02:07,396 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 11:02:07,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:02:07 BoogieIcfgContainer [2021-12-15 11:02:07,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:02:07,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:02:07,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:02:07,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:02:07,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:02:06" (1/3) ... [2021-12-15 11:02:07,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf15588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:02:07, skipping insertion in model container [2021-12-15 11:02:07,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:06" (2/3) ... [2021-12-15 11:02:07,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf15588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:02:07, skipping insertion in model container [2021-12-15 11:02:07,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:02:07" (3/3) ... [2021-12-15 11:02:07,428 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound20.c [2021-12-15 11:02:07,432 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:02:07,438 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:02:07,537 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:02:07,552 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 11:02:07,552 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:02:07,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-15 11:02:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 11:02:07,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:02:07,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:02:07,606 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:02:07,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:02:07,611 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2021-12-15 11:02:07,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:02:07,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318461357] [2021-12-15 11:02:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:02:07,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:02:07,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:02:07,742 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 11:02:07,755 INFO L158 Benchmark]: Toolchain (without parser) took 1107.93ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.2MB in the beginning and 85.0MB in the end (delta: -32.8MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-12-15 11:02:07,756 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:02:07,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.65ms. Allocated memory is still 90.2MB. Free memory was 52.0MB in the beginning and 66.4MB in the end (delta: -14.4MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-12-15 11:02:07,757 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.37ms. Allocated memory is still 90.2MB. Free memory was 66.4MB in the beginning and 64.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:02:07,758 INFO L158 Benchmark]: Boogie Preprocessor took 39.89ms. Allocated memory is still 90.2MB. Free memory was 64.8MB in the beginning and 63.8MB in the end (delta: 992.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:02:07,772 INFO L158 Benchmark]: RCFGBuilder took 387.06ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 54.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:02:07,777 INFO L158 Benchmark]: TraceAbstraction took 328.18ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.0MB in the beginning and 85.0MB in the end (delta: -31.1MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-12-15 11:02:07,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.65ms. Allocated memory is still 90.2MB. Free memory was 52.0MB in the beginning and 66.4MB in the end (delta: -14.4MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.37ms. Allocated memory is still 90.2MB. Free memory was 66.4MB in the beginning and 64.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.89ms. Allocated memory is still 90.2MB. Free memory was 64.8MB in the beginning and 63.8MB in the end (delta: 992.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 387.06ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 54.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 328.18ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.0MB in the beginning and 85.0MB in the end (delta: -31.1MB). Peak memory consumption was 12.3MB. 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 11:02:07,855 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/hard2_valuebound20.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 1619c1c02ba7c9b660af32e6427e3b3d5cd6ca3ff286b9db386918ae0c8b508c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:02:09,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:02:09,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:02:10,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:02:10,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:02:10,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:02:10,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:02:10,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:02:10,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:02:10,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:02:10,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:02:10,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:02:10,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:02:10,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:02:10,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:02:10,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:02:10,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:02:10,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:02:10,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:02:10,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:02:10,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:02:10,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:02:10,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:02:10,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:02:10,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:02:10,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:02:10,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:02:10,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:02:10,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:02:10,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:02:10,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:02:10,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:02:10,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:02:10,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:02:10,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:02:10,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:02:10,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:02:10,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:02:10,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:02:10,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:02:10,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:02:10,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:02:10,126 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:02:10,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:02:10,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:02:10,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:02:10,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:02:10,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:02:10,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:02:10,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:02:10,129 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:02:10,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:02:10,130 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:02:10,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:02:10,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:02:10,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:02:10,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:02:10,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:02:10,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:02:10,131 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:02:10,131 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:02:10,131 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:02:10,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:02:10,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:02:10,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:02:10,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:02:10,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:02:10,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:02:10,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:02:10,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:02:10,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:02:10,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:02:10,132 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:02:10,133 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:02:10,133 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:02:10,133 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:02:10,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:02:10,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:02:10,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:02:10,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1619c1c02ba7c9b660af32e6427e3b3d5cd6ca3ff286b9db386918ae0c8b508c [2021-12-15 11:02:10,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:02:10,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:02:10,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:02:10,431 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:02:10,432 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:02:10,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c [2021-12-15 11:02:10,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/783f3b5f1/cd729f40ced744d9a62c195f909f4267/FLAG82b7e2054 [2021-12-15 11:02:10,860 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:02:10,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c [2021-12-15 11:02:10,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/783f3b5f1/cd729f40ced744d9a62c195f909f4267/FLAG82b7e2054 [2021-12-15 11:02:11,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/783f3b5f1/cd729f40ced744d9a62c195f909f4267 [2021-12-15 11:02:11,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:02:11,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:02:11,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:02:11,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:02:11,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:02:11,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:02:11" (1/1) ... [2021-12-15 11:02:11,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46448221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:11, skipping insertion in model container [2021-12-15 11:02:11,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:02:11" (1/1) ... [2021-12-15 11:02:11,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:02:11,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:02:11,574 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/hard2_valuebound20.c[526,539] [2021-12-15 11:02:11,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:02:11,620 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:02:11,664 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/hard2_valuebound20.c[526,539] [2021-12-15 11:02:11,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:02:11,719 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:02:11,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:11 WrapperNode [2021-12-15 11:02:11,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:02:11,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:02:11,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:02:11,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:02:11,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:11" (1/1) ... [2021-12-15 11:02:11,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:11" (1/1) ... [2021-12-15 11:02:11,779 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2021-12-15 11:02:11,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:02:11,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:02:11,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:02:11,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:02:11,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:11" (1/1) ... [2021-12-15 11:02:11,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:11" (1/1) ... [2021-12-15 11:02:11,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:11" (1/1) ... [2021-12-15 11:02:11,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:11" (1/1) ... [2021-12-15 11:02:11,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:11" (1/1) ... [2021-12-15 11:02:11,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:11" (1/1) ... [2021-12-15 11:02:11,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:11" (1/1) ... [2021-12-15 11:02:11,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:02:11,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:02:11,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:02:11,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:02:11,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:11" (1/1) ... [2021-12-15 11:02:11,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:02:11,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:02:11,875 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 11:02:11,882 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 11:02:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:02:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:02:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:02:11,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:02:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:02:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:02:11,939 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:02:11,940 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:02:12,077 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:02:12,081 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:02:12,081 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 11:02:12,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:02:12 BoogieIcfgContainer [2021-12-15 11:02:12,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:02:12,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:02:12,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:02:12,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:02:12,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:02:11" (1/3) ... [2021-12-15 11:02:12,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7270bfe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:02:12, skipping insertion in model container [2021-12-15 11:02:12,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:11" (2/3) ... [2021-12-15 11:02:12,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7270bfe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:02:12, skipping insertion in model container [2021-12-15 11:02:12,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:02:12" (3/3) ... [2021-12-15 11:02:12,088 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound20.c [2021-12-15 11:02:12,091 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:02:12,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:02:12,121 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:02:12,125 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 11:02:12,126 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:02:12,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-15 11:02:12,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 11:02:12,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:02:12,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:02:12,140 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:02:12,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:02:12,145 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2021-12-15 11:02:12,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:02:12,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671753923] [2021-12-15 11:02:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:02:12,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:02:12,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:02:12,157 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 11:02:12,195 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 11:02:12,231 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 11:02:12,422 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 11:02:12,423 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 11:02:12,426 INFO L158 Benchmark]: Toolchain (without parser) took 1147.87ms. Allocated memory is still 71.3MB. Free memory was 54.2MB in the beginning and 33.7MB in the end (delta: 20.4MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2021-12-15 11:02:12,426 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 71.3MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:02:12,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 427.06ms. Allocated memory is still 71.3MB. Free memory was 53.9MB in the beginning and 54.4MB in the end (delta: -522.2kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:02:12,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.84ms. Allocated memory is still 71.3MB. Free memory was 54.1MB in the beginning and 52.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:02:12,428 INFO L158 Benchmark]: Boogie Preprocessor took 51.18ms. Allocated memory is still 71.3MB. Free memory was 52.7MB in the beginning and 51.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:02:12,428 INFO L158 Benchmark]: RCFGBuilder took 250.89ms. Allocated memory is still 71.3MB. Free memory was 51.6MB in the beginning and 42.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:02:12,429 INFO L158 Benchmark]: TraceAbstraction took 341.24ms. Allocated memory is still 71.3MB. Free memory was 41.7MB in the beginning and 33.7MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:02:12,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 71.3MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 427.06ms. Allocated memory is still 71.3MB. Free memory was 53.9MB in the beginning and 54.4MB in the end (delta: -522.2kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.84ms. Allocated memory is still 71.3MB. Free memory was 54.1MB in the beginning and 52.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.18ms. Allocated memory is still 71.3MB. Free memory was 52.7MB in the beginning and 51.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 250.89ms. Allocated memory is still 71.3MB. Free memory was 51.6MB in the beginning and 42.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 341.24ms. Allocated memory is still 71.3MB. Free memory was 41.7MB in the beginning and 33.7MB in the end (delta: 8.0MB). 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 11:02:12,460 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