./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-time-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-time-symm.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 1a4a8ed8231839c1d068f87d8f5bf4794a9c8d2e .................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 14:23:34,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 14:23:34,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 14:23:34,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-08 14:23:34,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-08 14:23:34,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-08 14:23:34,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-08 14:23:34,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-08 14:23:34,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-08 14:23:34,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-08 14:23:34,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-08 14:23:34,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-08 14:23:34,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 14:23:34,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 14:23:34,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 14:23:34,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 14:23:34,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 14:23:34,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 14:23:34,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 14:23:34,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 14:23:34,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 14:23:34,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 14:23:34,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 14:23:34,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 14:23:34,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-08 14:23:34,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-08 14:23:34,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-08 14:23:34,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-08 14:23:34,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-08 14:23:34,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-08 14:23:34,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 14:23:34,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 14:23:34,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 14:23:34,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 14:23:34,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 14:23:34,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 14:23:34,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 14:23:34,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 14:23:34,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 14:23:34,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 14:23:34,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 14:23:34,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-08 14:23:34,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 14:23:34,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 14:23:34,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 14:23:34,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 14:23:34,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 14:23:34,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 14:23:34,718 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 14:23:34,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 14:23:34,718 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 14:23:34,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 14:23:34,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 14:23:34,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 14:23:34,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 14:23:34,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 14:23:34,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 14:23:34,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 14:23:34,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 14:23:34,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 14:23:34,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 14:23:34,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 14:23:34,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 14:23:34,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 14:23:34,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 14:23:34,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 14:23:34,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 14:23:34,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 14:23:34,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 14:23:34,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 14:23:34,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 14:23:34,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 14:23:34,724 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a4a8ed8231839c1d068f87d8f5bf4794a9c8d2e [2021-10-08 14:23:35,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 14:23:35,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 14:23:35,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 14:23:35,260 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 14:23:35,261 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 14:23:35,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-time-symm.wvr.c [2021-10-08 14:23:35,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/310d6b05e/7c9283508dd3403fb4513636eed70149/FLAGe093c73f5 [2021-10-08 14:23:35,925 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 14:23:35,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-time-symm.wvr.c [2021-10-08 14:23:35,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/310d6b05e/7c9283508dd3403fb4513636eed70149/FLAGe093c73f5 [2021-10-08 14:23:36,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/310d6b05e/7c9283508dd3403fb4513636eed70149 [2021-10-08 14:23:36,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 14:23:36,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 14:23:36,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 14:23:36,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 14:23:36,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 14:23:36,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 02:23:36" (1/1) ... [2021-10-08 14:23:36,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@410f3310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:23:36, skipping insertion in model container [2021-10-08 14:23:36,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 02:23:36" (1/1) ... [2021-10-08 14:23:36,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 14:23:36,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 14:23:36,527 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-time-symm.wvr.c[2490,2503] [2021-10-08 14:23:36,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 14:23:36,544 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 14:23:36,571 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-time-symm.wvr.c[2490,2503] [2021-10-08 14:23:36,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 14:23:36,591 INFO L208 MainTranslator]: Completed translation [2021-10-08 14:23:36,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:23:36 WrapperNode [2021-10-08 14:23:36,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 14:23:36,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 14:23:36,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 14:23:36,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 14:23:36,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:23:36" (1/1) ... [2021-10-08 14:23:36,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:23:36" (1/1) ... [2021-10-08 14:23:36,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 14:23:36,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 14:23:36,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 14:23:36,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 14:23:36,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:23:36" (1/1) ... [2021-10-08 14:23:36,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:23:36" (1/1) ... [2021-10-08 14:23:36,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:23:36" (1/1) ... [2021-10-08 14:23:36,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:23:36" (1/1) ... [2021-10-08 14:23:36,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:23:36" (1/1) ... [2021-10-08 14:23:36,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:23:36" (1/1) ... [2021-10-08 14:23:36,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:23:36" (1/1) ... [2021-10-08 14:23:36,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 14:23:36,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 14:23:36,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 14:23:36,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 14:23:36,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:23:36" (1/1) ... [2021-10-08 14:23:36,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 14:23:36,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 14:23:36,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 14:23:36,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 14:23:36,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 14:23:36,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 14:23:36,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 14:23:36,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 14:23:36,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 14:23:36,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 14:23:36,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 14:23:36,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 14:23:36,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 14:23:36,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 14:23:36,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 14:23:36,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 14:23:36,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 14:23:36,787 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 14:23:37,894 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 14:23:37,895 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-08 14:23:37,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:23:37 BoogieIcfgContainer [2021-10-08 14:23:37,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 14:23:37,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 14:23:37,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 14:23:37,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 14:23:37,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 02:23:36" (1/3) ... [2021-10-08 14:23:37,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2b3c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 02:23:37, skipping insertion in model container [2021-10-08 14:23:37,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:23:36" (2/3) ... [2021-10-08 14:23:37,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2b3c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 02:23:37, skipping insertion in model container [2021-10-08 14:23:37,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:23:37" (3/3) ... [2021-10-08 14:23:37,911 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-time-symm.wvr.c [2021-10-08 14:23:37,918 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 14:23:37,919 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 14:23:37,919 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-08 14:23:37,919 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 14:23:37,963 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,964 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,964 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,965 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,965 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,965 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,965 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,965 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,965 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,966 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,966 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,966 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,967 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,967 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,967 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,967 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,968 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,968 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,968 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,968 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,968 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,968 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,969 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,969 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,970 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,970 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,970 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,971 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,972 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,972 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,972 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,972 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,972 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,972 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,973 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,973 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,973 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,974 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,974 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,974 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,974 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,975 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,975 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,975 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,975 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,975 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,975 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,976 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,976 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,976 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,977 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,977 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,985 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,985 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,985 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,986 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,987 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,987 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,987 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,987 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,987 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,988 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,990 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,991 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,991 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,991 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,992 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,992 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,993 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,993 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,994 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,994 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,995 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:37,995 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:23:38,006 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 14:23:38,077 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 14:23:38,101 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-08 14:23:38,101 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-08 14:23:38,124 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 14:23:38,137 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 96 transitions, 208 flow [2021-10-08 14:23:38,140 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 96 transitions, 208 flow [2021-10-08 14:23:38,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 96 transitions, 208 flow [2021-10-08 14:23:38,205 INFO L129 PetriNetUnfolder]: 5/94 cut-off events. [2021-10-08 14:23:38,206 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 14:23:38,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 5/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-10-08 14:23:38,210 INFO L116 LiptonReduction]: Number of co-enabled transitions 108 [2021-10-08 14:23:43,893 INFO L131 LiptonReduction]: Checked pairs total: 170 [2021-10-08 14:23:43,893 INFO L133 LiptonReduction]: Total number of compositions: 95 [2021-10-08 14:23:43,911 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 14 transitions, 44 flow [2021-10-08 14:23:43,926 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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) [2021-10-08 14:23:43,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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) [2021-10-08 14:23:43,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 14:23:43,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:23:43,940 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:23:43,941 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-08 14:23:43,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:23:43,952 INFO L82 PathProgramCache]: Analyzing trace with hash 747174930, now seen corresponding path program 1 times [2021-10-08 14:23:43,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:23:43,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627632915] [2021-10-08 14:23:43,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:23:43,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:23:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:23:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:23:44,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:23:44,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627632915] [2021-10-08 14:23:44,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627632915] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:23:44,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:23:44,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 14:23:44,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799152365] [2021-10-08 14:23:44,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 14:23:44,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:23:44,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 14:23:44,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 14:23:44,665 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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) Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 14:23:44,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:23:44,751 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-10-08 14:23:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 14:23:44,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 14:23:44,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:23:44,762 INFO L225 Difference]: With dead ends: 25 [2021-10-08 14:23:44,762 INFO L226 Difference]: Without dead ends: 14 [2021-10-08 14:23:44,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 14:23:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-08 14:23:44,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-08 14:23:44,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2021-10-08 14:23:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-08 14:23:44,798 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-10-08 14:23:44,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:23:44,799 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-08 14:23:44,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 14:23:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-08 14:23:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 14:23:44,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:23:44,802 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:23:44,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 14:23:44,808 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-08 14:23:44,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:23:44,810 INFO L82 PathProgramCache]: Analyzing trace with hash 124374862, now seen corresponding path program 2 times [2021-10-08 14:23:44,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:23:44,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371132284] [2021-10-08 14:23:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:23:44,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:23:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:23:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:23:45,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:23:45,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371132284] [2021-10-08 14:23:45,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371132284] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:23:45,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:23:45,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 14:23:45,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607276754] [2021-10-08 14:23:45,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 14:23:45,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:23:45,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 14:23:45,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 14:23:45,140 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 14:23:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:23:45,172 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-08 14:23:45,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 14:23:45,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 14:23:45,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:23:45,173 INFO L225 Difference]: With dead ends: 13 [2021-10-08 14:23:45,173 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 14:23:45,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 14:23:45,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 14:23:45,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 14:23:45,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-08 14:23:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 14:23:45,175 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-08 14:23:45,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:23:45,176 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 14:23:45,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 14:23:45,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 14:23:45,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 14:23:45,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-08 14:23:45,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 14:23:45,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 14:23:45,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-08 14:23:45,185 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 14:23:45,185 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 14:23:45,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 02:23:45 BasicIcfg [2021-10-08 14:23:45,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 14:23:45,188 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-08 14:23:45,189 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-08 14:23:45,189 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-08 14:23:45,189 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:23:37" (3/4) ... [2021-10-08 14:23:45,193 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-08 14:23:45,200 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-08 14:23:45,200 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-08 14:23:45,206 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-08 14:23:45,206 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-08 14:23:45,207 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 14:23:45,207 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 14:23:45,258 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-08 14:23:45,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-08 14:23:45,263 INFO L168 Benchmark]: Toolchain (without parser) took 8986.00 ms. Allocated memory was 60.8 MB in the beginning and 94.4 MB in the end (delta: 33.6 MB). Free memory was 36.5 MB in the beginning and 49.5 MB in the end (delta: -13.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2021-10-08 14:23:45,265 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 60.8 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-08 14:23:45,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.01 ms. Allocated memory is still 60.8 MB. Free memory was 36.2 MB in the beginning and 41.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-08 14:23:45,267 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.59 ms. Allocated memory is still 60.8 MB. Free memory was 41.0 MB in the beginning and 39.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-08 14:23:45,270 INFO L168 Benchmark]: Boogie Preprocessor took 28.96 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 37.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-08 14:23:45,270 INFO L168 Benchmark]: RCFGBuilder took 1221.31 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 37.5 MB in the beginning and 50.0 MB in the end (delta: -12.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-10-08 14:23:45,273 INFO L168 Benchmark]: TraceAbstraction took 7285.54 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 49.6 MB in the beginning and 52.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-10-08 14:23:45,274 INFO L168 Benchmark]: Witness Printer took 72.70 ms. Allocated memory is still 94.4 MB. Free memory was 52.4 MB in the beginning and 49.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-08 14:23:45,281 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 60.8 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.01 ms. Allocated memory is still 60.8 MB. Free memory was 36.2 MB in the beginning and 41.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.59 ms. Allocated memory is still 60.8 MB. Free memory was 41.0 MB in the beginning and 39.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.96 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 37.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1221.31 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 37.5 MB in the beginning and 50.0 MB in the end (delta: -12.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7285.54 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 49.6 MB in the beginning and 52.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * Witness Printer took 72.70 ms. Allocated memory is still 94.4 MB. Free memory was 52.4 MB in the beginning and 49.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5752.8ms, 98 PlacesBefore, 21 PlacesAfterwards, 96 TransitionsBefore, 14 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 7 FixpointIterations, 69 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 0 ConcurrentYvCompositions, 5 ChoiceCompositions, 95 TotalNumberOfCompositions, 170 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 170, positive: 170, positive conditional: 0, positive unconditional: 170, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 82, positive: 82, positive conditional: 0, positive unconditional: 82, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 82, positive: 82, positive conditional: 0, positive unconditional: 82, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 170, positive: 88, positive conditional: 0, positive unconditional: 88, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 82, unknown conditional: 0, unknown unconditional: 82] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 80]: 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 5 procedures, 102 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 7110.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.7ms, AutomataDifference: 151.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5825.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 13 SDslu, 23 SDs, 0 SdLazy, 12 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 118.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.0ms SsaConstructionTime, 423.9ms SatisfiabilityAnalysisTime, 455.5ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 359 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2021-10-08 14:23:45,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...