./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_42-traces-ex-mini_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/goblint-regression/13-privatized_42-traces-ex-mini_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a1b66927274f90f2d29b42a27dd6906879a79472ec3d29ac0ef54d445fc2204b --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 22:28:01,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:28:01,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:28:01,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:28:01,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:28:01,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:28:01,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:28:01,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:28:01,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:28:01,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:28:01,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:28:01,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:28:01,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:28:01,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:28:01,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:28:01,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:28:01,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:28:01,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:28:01,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:28:01,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:28:01,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:28:01,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:28:01,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:28:01,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:28:01,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:28:01,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:28:01,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:28:01,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:28:01,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:28:01,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:28:01,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:28:01,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:28:01,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:28:01,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:28:01,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:28:01,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:28:01,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:28:01,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:28:01,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:28:01,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:28:01,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:28:01,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:28:01,943 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:28:01,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:28:01,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:28:01,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:28:01,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:28:01,945 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:28:01,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:28:01,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:28:01,945 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:28:01,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:28:01,946 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:28:01,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:28:01,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:28:01,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:28:01,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:28:01,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:28:01,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:28:01,947 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:28:01,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:28:01,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:28:01,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:28:01,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:28:01,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:28:01,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:28:01,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:28:01,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:28:01,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:28:01,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:28:01,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:28:01,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:28:01,950 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:28:01,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:28:01,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:28:01,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:28:01,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1b66927274f90f2d29b42a27dd6906879a79472ec3d29ac0ef54d445fc2204b [2021-12-17 22:28:02,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:28:02,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:28:02,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:28:02,203 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:28:02,204 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:28:02,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2021-12-17 22:28:02,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0153050/dbbc92aeb4314a879a0de5b6894fc34a/FLAG3e7ba1602 [2021-12-17 22:28:02,604 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:28:02,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2021-12-17 22:28:02,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0153050/dbbc92aeb4314a879a0de5b6894fc34a/FLAG3e7ba1602 [2021-12-17 22:28:02,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0153050/dbbc92aeb4314a879a0de5b6894fc34a [2021-12-17 22:28:02,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:28:02,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:28:02,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:28:02,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:28:02,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:28:02,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:28:02" (1/1) ... [2021-12-17 22:28:02,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f56a336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:02, skipping insertion in model container [2021-12-17 22:28:02,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:28:02" (1/1) ... [2021-12-17 22:28:02,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:28:03,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:28:03,152 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/goblint-regression/13-privatized_42-traces-ex-mini_true.i[1091,1104] [2021-12-17 22:28:03,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:28:03,279 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:28:03,288 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/goblint-regression/13-privatized_42-traces-ex-mini_true.i[1091,1104] [2021-12-17 22:28:03,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:28:03,345 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:28:03,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:03 WrapperNode [2021-12-17 22:28:03,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:28:03,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:28:03,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:28:03,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:28:03,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:03" (1/1) ... [2021-12-17 22:28:03,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:03" (1/1) ... [2021-12-17 22:28:03,392 INFO L137 Inliner]: procedures = 162, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2021-12-17 22:28:03,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:28:03,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:28:03,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:28:03,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:28:03,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:03" (1/1) ... [2021-12-17 22:28:03,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:03" (1/1) ... [2021-12-17 22:28:03,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:03" (1/1) ... [2021-12-17 22:28:03,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:03" (1/1) ... [2021-12-17 22:28:03,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:03" (1/1) ... [2021-12-17 22:28:03,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:03" (1/1) ... [2021-12-17 22:28:03,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:03" (1/1) ... [2021-12-17 22:28:03,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:28:03,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:28:03,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:28:03,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:28:03,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:03" (1/1) ... [2021-12-17 22:28:03,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:28:03,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:28:03,470 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) [2021-12-17 22:28:03,479 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 [2021-12-17 22:28:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:28:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-17 22:28:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:28:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:28:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-12-17 22:28:03,505 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-12-17 22:28:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:28:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:28:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:28:03,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:28:03,506 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 22:28:03,630 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:28:03,632 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:28:03,733 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:28:03,738 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:28:03,738 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 22:28:03,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:28:03 BoogieIcfgContainer [2021-12-17 22:28:03,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:28:03,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:28:03,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:28:03,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:28:03,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:28:02" (1/3) ... [2021-12-17 22:28:03,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2ecd98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:28:03, skipping insertion in model container [2021-12-17 22:28:03,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:03" (2/3) ... [2021-12-17 22:28:03,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2ecd98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:28:03, skipping insertion in model container [2021-12-17 22:28:03,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:28:03" (3/3) ... [2021-12-17 22:28:03,747 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_42-traces-ex-mini_true.i [2021-12-17 22:28:03,750 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:28:03,750 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:28:03,750 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 22:28:03,750 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:28:03,765 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,765 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,765 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,765 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,766 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,766 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,766 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,766 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,766 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,766 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,767 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,767 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,767 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,767 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,767 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,767 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,768 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,768 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,768 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,768 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,770 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,771 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,771 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,771 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,771 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,771 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:03,774 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-17 22:28:03,832 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:28:03,847 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 [2021-12-17 22:28:03,848 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 22:28:03,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 161 flow [2021-12-17 22:28:03,898 INFO L129 PetriNetUnfolder]: 1/77 cut-off events. [2021-12-17 22:28:03,898 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:28:03,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 1/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2021-12-17 22:28:03,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 78 transitions, 161 flow [2021-12-17 22:28:03,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 64 transitions, 131 flow [2021-12-17 22:28:03,935 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2021-12-17 22:28:03,935 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:28:03,936 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:28:03,936 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:28:03,937 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-17 22:28:03,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:28:03,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1063551480, now seen corresponding path program 1 times [2021-12-17 22:28:03,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:28:03,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148426375] [2021-12-17 22:28:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:28:03,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:28:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:28:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:28:04,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:28:04,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148426375] [2021-12-17 22:28:04,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148426375] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:28:04,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:28:04,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:28:04,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693962596] [2021-12-17 22:28:04,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:28:04,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:28:04,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:28:04,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:28:04,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:28:04,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 78 [2021-12-17 22:28:04,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 131 flow. Second operand has 5 states, 5 states have (on average 68.2) internal successors, (341), 5 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:28:04,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 78 [2021-12-17 22:28:04,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:28:04,402 INFO L129 PetriNetUnfolder]: 8/99 cut-off events. [2021-12-17 22:28:04,402 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-17 22:28:04,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 99 events. 8/99 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 148 event pairs, 0 based on Foata normal form. 3/101 useless extension candidates. Maximal degree in co-relation 87. Up to 10 conditions per place. [2021-12-17 22:28:04,404 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 8 selfloop transitions, 3 changer transitions 9/76 dead transitions. [2021-12-17 22:28:04,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 195 flow [2021-12-17 22:28:04,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:28:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:28:04,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 491 transitions. [2021-12-17 22:28:04,414 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8992673992673993 [2021-12-17 22:28:04,415 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 491 transitions. [2021-12-17 22:28:04,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 491 transitions. [2021-12-17 22:28:04,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:28:04,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 491 transitions. [2021-12-17 22:28:04,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,428 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,429 INFO L186 Difference]: Start difference. First operand has 68 places, 64 transitions, 131 flow. Second operand 7 states and 491 transitions. [2021-12-17 22:28:04,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 195 flow [2021-12-17 22:28:04,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:28:04,434 INFO L242 Difference]: Finished difference. Result has 78 places, 64 transitions, 149 flow [2021-12-17 22:28:04,436 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=149, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2021-12-17 22:28:04,438 INFO L334 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2021-12-17 22:28:04,439 INFO L470 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 149 flow [2021-12-17 22:28:04,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.2) internal successors, (341), 5 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,439 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:28:04,439 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:28:04,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:28:04,440 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-17 22:28:04,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:28:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1855259157, now seen corresponding path program 1 times [2021-12-17 22:28:04,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:28:04,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778265400] [2021-12-17 22:28:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:28:04,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:28:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:28:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:28:04,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:28:04,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778265400] [2021-12-17 22:28:04,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778265400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:28:04,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:28:04,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:28:04,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865445758] [2021-12-17 22:28:04,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:28:04,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:28:04,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:28:04,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:28:04,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:28:04,643 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 78 [2021-12-17 22:28:04,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 50.42857142857143) internal successors, (353), 7 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:28:04,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 78 [2021-12-17 22:28:04,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:28:04,761 INFO L129 PetriNetUnfolder]: 6/94 cut-off events. [2021-12-17 22:28:04,762 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-12-17 22:28:04,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 94 events. 6/94 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 2 based on Foata normal form. 4/98 useless extension candidates. Maximal degree in co-relation 146. Up to 15 conditions per place. [2021-12-17 22:28:04,763 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 21 selfloop transitions, 6 changer transitions 1/66 dead transitions. [2021-12-17 22:28:04,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 209 flow [2021-12-17 22:28:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 22:28:04,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-17 22:28:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 312 transitions. [2021-12-17 22:28:04,766 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2021-12-17 22:28:04,766 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 312 transitions. [2021-12-17 22:28:04,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 312 transitions. [2021-12-17 22:28:04,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:28:04,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 312 transitions. [2021-12-17 22:28:04,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 52.0) internal successors, (312), 6 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,773 INFO L186 Difference]: Start difference. First operand has 78 places, 64 transitions, 149 flow. Second operand 6 states and 312 transitions. [2021-12-17 22:28:04,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 209 flow [2021-12-17 22:28:04,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 195 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-12-17 22:28:04,776 INFO L242 Difference]: Finished difference. Result has 73 places, 64 transitions, 147 flow [2021-12-17 22:28:04,778 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2021-12-17 22:28:04,779 INFO L334 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2021-12-17 22:28:04,779 INFO L470 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 147 flow [2021-12-17 22:28:04,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 50.42857142857143) internal successors, (353), 7 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,780 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:28:04,780 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:28:04,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:28:04,781 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-17 22:28:04,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:28:04,784 INFO L85 PathProgramCache]: Analyzing trace with hash -237159032, now seen corresponding path program 1 times [2021-12-17 22:28:04,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:28:04,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427666578] [2021-12-17 22:28:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:28:04,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:28:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:28:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:28:04,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:28:04,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427666578] [2021-12-17 22:28:04,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427666578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:28:04,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:28:04,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 22:28:04,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541094894] [2021-12-17 22:28:04,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:28:04,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 22:28:04,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:28:04,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 22:28:04,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 22:28:04,887 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 78 [2021-12-17 22:28:04,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:28:04,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 78 [2021-12-17 22:28:04,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:28:04,954 INFO L129 PetriNetUnfolder]: 5/81 cut-off events. [2021-12-17 22:28:04,954 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-17 22:28:04,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 81 events. 5/81 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 2 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 70. Up to 17 conditions per place. [2021-12-17 22:28:04,954 INFO L132 encePairwiseOnDemand]: 73/78 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2021-12-17 22:28:04,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 61 transitions, 185 flow [2021-12-17 22:28:04,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 22:28:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-17 22:28:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 288 transitions. [2021-12-17 22:28:04,956 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7384615384615385 [2021-12-17 22:28:04,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 288 transitions. [2021-12-17 22:28:04,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 288 transitions. [2021-12-17 22:28:04,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:28:04,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 288 transitions. [2021-12-17 22:28:04,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,958 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,958 INFO L186 Difference]: Start difference. First operand has 73 places, 64 transitions, 147 flow. Second operand 5 states and 288 transitions. [2021-12-17 22:28:04,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 61 transitions, 185 flow [2021-12-17 22:28:04,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 61 transitions, 173 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-12-17 22:28:04,960 INFO L242 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2021-12-17 22:28:04,960 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2021-12-17 22:28:04,960 INFO L334 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2021-12-17 22:28:04,961 INFO L470 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2021-12-17 22:28:04,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:04,966 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-17 22:28:04,971 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2021-12-17 22:28:04,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 22:28:04,974 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 22:28:04,976 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-17 22:28:04,976 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 22:28:04,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 10:28:04 BasicIcfg [2021-12-17 22:28:04,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 22:28:04,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 22:28:04,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 22:28:04,979 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 22:28:04,979 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:28:03" (3/4) ... [2021-12-17 22:28:04,981 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 22:28:04,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2021-12-17 22:28:04,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-12-17 22:28:04,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-17 22:28:04,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 22:28:04,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 22:28:05,009 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 22:28:05,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 22:28:05,010 INFO L158 Benchmark]: Toolchain (without parser) took 2035.22ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 70.4MB in the beginning and 78.8MB in the end (delta: -8.4MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2021-12-17 22:28:05,010 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 22:28:05,010 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.82ms. Allocated memory is still 107.0MB. Free memory was 70.3MB in the beginning and 73.8MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 22:28:05,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.63ms. Allocated memory is still 107.0MB. Free memory was 73.8MB in the beginning and 71.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:28:05,011 INFO L158 Benchmark]: Boogie Preprocessor took 35.88ms. Allocated memory is still 107.0MB. Free memory was 71.7MB in the beginning and 70.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 22:28:05,011 INFO L158 Benchmark]: RCFGBuilder took 309.90ms. Allocated memory is still 107.0MB. Free memory was 70.5MB in the beginning and 58.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-17 22:28:05,011 INFO L158 Benchmark]: TraceAbstraction took 1237.87ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 58.3MB in the beginning and 82.7MB in the end (delta: -24.4MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2021-12-17 22:28:05,012 INFO L158 Benchmark]: Witness Printer took 30.93ms. Allocated memory is still 142.6MB. Free memory was 81.8MB in the beginning and 78.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:28:05,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 358.82ms. Allocated memory is still 107.0MB. Free memory was 70.3MB in the beginning and 73.8MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.63ms. Allocated memory is still 107.0MB. Free memory was 73.8MB in the beginning and 71.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.88ms. Allocated memory is still 107.0MB. Free memory was 71.7MB in the beginning and 70.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 309.90ms. Allocated memory is still 107.0MB. Free memory was 70.5MB in the beginning and 58.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1237.87ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 58.3MB in the beginning and 82.7MB in the end (delta: -24.4MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Witness Printer took 30.93ms. Allocated memory is still 142.6MB. Free memory was 81.8MB in the beginning and 78.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 91 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145 IncrementalHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 16 mSDtfsCounter, 145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=1, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 169 ConstructedInterpolants, 0 QuantifiedInterpolants, 721 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-17 22:28:05,049 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: TRUE