./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound10.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/hard-u_unwindbound10.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 91dfff3356c8586e4ab54260d22ce3d78ead2ec4d531619c6564036666f10187 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:01:51,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:01:51,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:01:51,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:01:51,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:01:51,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:01:51,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:01:51,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:01:51,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:01:51,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:01:51,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:01:51,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:01:51,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:01:51,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:01:51,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:01:51,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:01:51,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:01:51,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:01:51,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:01:51,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:01:51,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:01:51,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:01:51,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:01:51,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:01:51,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:01:51,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:01:51,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:01:51,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:01:51,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:01:51,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:01:51,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:01:51,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:01:51,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:01:51,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:01:51,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:01:51,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:01:51,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:01:51,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:01:51,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:01:51,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:01:51,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:01:51,647 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:01:51,672 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:01:51,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:01:51,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:01:51,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:01:51,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:01:51,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:01:51,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:01:51,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:01:51,676 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:01:51,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:01:51,677 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:01:51,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:01:51,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:01:51,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:01:51,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:01:51,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:01:51,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:01:51,679 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:01:51,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:01:51,679 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:01:51,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:01:51,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:01:51,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:01:51,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:01:51,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:01:51,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:01:51,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:01:51,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:01:51,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:01:51,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:01:51,682 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:01:51,682 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:01:51,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:01:51,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:01:51,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91dfff3356c8586e4ab54260d22ce3d78ead2ec4d531619c6564036666f10187 [2021-12-15 11:01:51,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:01:51,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:01:51,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:01:51,950 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:01:51,951 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:01:51,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound10.c [2021-12-15 11:01:52,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518cac8e9/02c275fccac4496ba2c0cb8659ebf923/FLAG1266a9bfd [2021-12-15 11:01:52,381 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:01:52,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound10.c [2021-12-15 11:01:52,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518cac8e9/02c275fccac4496ba2c0cb8659ebf923/FLAG1266a9bfd [2021-12-15 11:01:52,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518cac8e9/02c275fccac4496ba2c0cb8659ebf923 [2021-12-15 11:01:52,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:01:52,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:01:52,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:01:52,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:01:52,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:01:52,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:01:52" (1/1) ... [2021-12-15 11:01:52,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5311d367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:52, skipping insertion in model container [2021-12-15 11:01:52,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:01:52" (1/1) ... [2021-12-15 11:01:52,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:01:52,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:01:52,955 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/hard-u_unwindbound10.c[537,550] [2021-12-15 11:01:52,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:01:52,976 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:01:52,991 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound10.c[537,550] [2021-12-15 11:01:52,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:01:53,007 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:01:53,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:53 WrapperNode [2021-12-15 11:01:53,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:01:53,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:01:53,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:01:53,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:01:53,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:53" (1/1) ... [2021-12-15 11:01:53,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:53" (1/1) ... [2021-12-15 11:01:53,039 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2021-12-15 11:01:53,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:01:53,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:01:53,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:01:53,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:01:53,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:53" (1/1) ... [2021-12-15 11:01:53,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:53" (1/1) ... [2021-12-15 11:01:53,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:53" (1/1) ... [2021-12-15 11:01:53,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:53" (1/1) ... [2021-12-15 11:01:53,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:53" (1/1) ... [2021-12-15 11:01:53,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:53" (1/1) ... [2021-12-15 11:01:53,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:53" (1/1) ... [2021-12-15 11:01:53,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:01:53,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:01:53,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:01:53,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:01:53,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:53" (1/1) ... [2021-12-15 11:01:53,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:01:53,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:01:53,102 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 11:01:53,114 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 11:01:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:01:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:01:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:01:53,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:01:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:01:53,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:01:53,204 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:01:53,205 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:01:53,298 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:01:53,304 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:01:53,304 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 11:01:53,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:01:53 BoogieIcfgContainer [2021-12-15 11:01:53,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:01:53,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:01:53,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:01:53,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:01:53,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:01:52" (1/3) ... [2021-12-15 11:01:53,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:01:53, skipping insertion in model container [2021-12-15 11:01:53,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:53" (2/3) ... [2021-12-15 11:01:53,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:01:53, skipping insertion in model container [2021-12-15 11:01:53,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:01:53" (3/3) ... [2021-12-15 11:01:53,319 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound10.c [2021-12-15 11:01:53,324 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:01:53,324 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:01:53,366 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:01:53,384 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 11:01:53,391 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:01:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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 11:01:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 11:01:53,410 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:01:53,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:01:53,412 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:01:53,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:01:53,417 INFO L85 PathProgramCache]: Analyzing trace with hash -712527539, now seen corresponding path program 1 times [2021-12-15 11:01:53,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:01:53,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584759430] [2021-12-15 11:01:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:01:53,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:01:53,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:01:53,472 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 11:01:53,477 INFO L158 Benchmark]: Toolchain (without parser) took 662.98ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 71.5MB in the beginning and 82.2MB in the end (delta: -10.7MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2021-12-15 11:01:53,478 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:01:53,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.29ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 71.4MB in the beginning and 104.4MB in the end (delta: -33.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:01:53,479 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.94ms. Allocated memory is still 127.9MB. Free memory was 104.4MB in the beginning and 102.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:01:53,480 INFO L158 Benchmark]: Boogie Preprocessor took 31.90ms. Allocated memory is still 127.9MB. Free memory was 102.7MB in the beginning and 101.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:01:53,481 INFO L158 Benchmark]: RCFGBuilder took 232.73ms. Allocated memory is still 127.9MB. Free memory was 101.2MB in the beginning and 91.5MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:01:53,482 INFO L158 Benchmark]: TraceAbstraction took 168.10ms. Allocated memory is still 127.9MB. Free memory was 91.1MB in the beginning and 82.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:01:53,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.29ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 71.4MB in the beginning and 104.4MB in the end (delta: -33.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.94ms. Allocated memory is still 127.9MB. Free memory was 104.4MB in the beginning and 102.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.90ms. Allocated memory is still 127.9MB. Free memory was 102.7MB in the beginning and 101.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 232.73ms. Allocated memory is still 127.9MB. Free memory was 101.2MB in the beginning and 91.5MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 168.10ms. Allocated memory is still 127.9MB. Free memory was 91.1MB in the beginning and 82.2MB in the end (delta: 8.9MB). 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 11:01:53,514 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/hard-u_unwindbound10.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 91dfff3356c8586e4ab54260d22ce3d78ead2ec4d531619c6564036666f10187 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:01:55,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:01:55,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:01:55,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:01:55,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:01:55,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:01:55,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:01:55,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:01:55,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:01:55,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:01:55,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:01:55,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:01:55,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:01:55,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:01:55,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:01:55,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:01:55,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:01:55,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:01:55,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:01:55,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:01:55,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:01:55,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:01:55,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:01:55,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:01:55,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:01:55,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:01:55,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:01:55,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:01:55,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:01:55,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:01:55,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:01:55,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:01:55,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:01:55,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:01:55,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:01:55,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:01:55,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:01:55,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:01:55,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:01:55,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:01:55,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:01:55,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:01:55,542 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:01:55,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:01:55,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:01:55,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:01:55,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:01:55,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:01:55,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:01:55,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:01:55,547 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:01:55,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:01:55,548 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:01:55,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:01:55,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:01:55,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:01:55,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:01:55,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:01:55,549 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:01:55,549 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:01:55,550 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:01:55,550 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:01:55,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:01:55,550 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:01:55,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:01:55,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:01:55,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:01:55,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:01:55,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:01:55,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:01:55,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:01:55,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:01:55,552 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:01:55,552 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:01:55,553 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:01:55,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:01:55,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:01:55,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:01:55,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:01:55,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91dfff3356c8586e4ab54260d22ce3d78ead2ec4d531619c6564036666f10187 [2021-12-15 11:01:55,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:01:55,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:01:55,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:01:55,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:01:55,932 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:01:55,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound10.c [2021-12-15 11:01:55,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac9dfdd8/93adc8094fd4404999d5c59131abc856/FLAG5066b9da0 [2021-12-15 11:01:56,463 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:01:56,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound10.c [2021-12-15 11:01:56,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac9dfdd8/93adc8094fd4404999d5c59131abc856/FLAG5066b9da0 [2021-12-15 11:01:56,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac9dfdd8/93adc8094fd4404999d5c59131abc856 [2021-12-15 11:01:56,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:01:56,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:01:56,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:01:56,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:01:56,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:01:56,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:01:56" (1/1) ... [2021-12-15 11:01:56,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610f4174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:56, skipping insertion in model container [2021-12-15 11:01:56,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:01:56" (1/1) ... [2021-12-15 11:01:56,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:01:56,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:01:56,653 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/hard-u_unwindbound10.c[537,550] [2021-12-15 11:01:56,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:01:56,677 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:01:56,730 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/hard-u_unwindbound10.c[537,550] [2021-12-15 11:01:56,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:01:56,755 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:01:56,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:56 WrapperNode [2021-12-15 11:01:56,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:01:56,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:01:56,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:01:56,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:01:56,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:56" (1/1) ... [2021-12-15 11:01:56,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:56" (1/1) ... [2021-12-15 11:01:56,790 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2021-12-15 11:01:56,790 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:01:56,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:01:56,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:01:56,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:01:56,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:56" (1/1) ... [2021-12-15 11:01:56,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:56" (1/1) ... [2021-12-15 11:01:56,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:56" (1/1) ... [2021-12-15 11:01:56,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:56" (1/1) ... [2021-12-15 11:01:56,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:56" (1/1) ... [2021-12-15 11:01:56,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:56" (1/1) ... [2021-12-15 11:01:56,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:56" (1/1) ... [2021-12-15 11:01:56,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:01:56,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:01:56,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:01:56,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:01:56,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:56" (1/1) ... [2021-12-15 11:01:56,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:01:56,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:01:56,865 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 11:01:56,889 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 11:01:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:01:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:01:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:01:56,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:01:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 11:01:56,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 11:01:56,968 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:01:56,969 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:01:57,131 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:01:57,152 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:01:57,152 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 11:01:57,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:01:57 BoogieIcfgContainer [2021-12-15 11:01:57,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:01:57,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:01:57,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:01:57,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:01:57,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:01:56" (1/3) ... [2021-12-15 11:01:57,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290acad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:01:57, skipping insertion in model container [2021-12-15 11:01:57,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:01:56" (2/3) ... [2021-12-15 11:01:57,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290acad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:01:57, skipping insertion in model container [2021-12-15 11:01:57,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:01:57" (3/3) ... [2021-12-15 11:01:57,161 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound10.c [2021-12-15 11:01:57,166 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:01:57,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:01:57,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:01:57,264 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 11:01:57,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:01:57,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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 11:01:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 11:01:57,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:01:57,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:01:57,289 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:01:57,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:01:57,295 INFO L85 PathProgramCache]: Analyzing trace with hash -712527539, now seen corresponding path program 1 times [2021-12-15 11:01:57,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:01:57,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650241004] [2021-12-15 11:01:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:01:57,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:01:57,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:01:57,310 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 11:01:57,312 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 11:01:57,346 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 11:01:57,543 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 11:01:57,543 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 11:01:57,547 INFO L158 Benchmark]: Toolchain (without parser) took 1054.15ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 37.7MB in the end (delta: 1.6MB). Peak memory consumption was 218.7kB. Max. memory is 16.1GB. [2021-12-15 11:01:57,548 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 41.7MB in the end (delta: 28.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:01:57,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.15ms. Allocated memory is still 60.8MB. Free memory was 39.1MB in the beginning and 43.1MB in the end (delta: -4.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 11:01:57,549 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.51ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 41.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:01:57,549 INFO L158 Benchmark]: Boogie Preprocessor took 42.35ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 40.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:01:57,550 INFO L158 Benchmark]: RCFGBuilder took 319.66ms. Allocated memory is still 60.8MB. Free memory was 40.5MB in the beginning and 30.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:01:57,554 INFO L158 Benchmark]: TraceAbstraction took 390.47ms. Allocated memory is still 60.8MB. Free memory was 30.4MB in the beginning and 37.7MB in the end (delta: -7.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:01:57,561 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 41.7MB in the end (delta: 28.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.15ms. Allocated memory is still 60.8MB. Free memory was 39.1MB in the beginning and 43.1MB in the end (delta: -4.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.51ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 41.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.35ms. Allocated memory is still 60.8MB. Free memory was 41.6MB in the beginning and 40.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 319.66ms. Allocated memory is still 60.8MB. Free memory was 40.5MB in the beginning and 30.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 390.47ms. Allocated memory is still 60.8MB. Free memory was 30.4MB in the beginning and 37.7MB in the end (delta: -7.4MB). 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 11:01:57,590 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