./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl/time-subst.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-subst.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 88a709f6cafff611ad25e52f7246cf0f22d85c74 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-05 20:56:43,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-05 20:56:43,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-05 20:56:43,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-05 20:56:43,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-05 20:56:43,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-05 20:56:43,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-05 20:56:43,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-05 20:56:43,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-05 20:56:43,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-05 20:56:43,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-05 20:56:43,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-05 20:56:43,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-05 20:56:43,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-05 20:56:43,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-05 20:56:43,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-05 20:56:43,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-05 20:56:43,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-05 20:56:43,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-05 20:56:43,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-05 20:56:43,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-05 20:56:43,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-05 20:56:43,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-05 20:56:43,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-05 20:56:43,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-05 20:56:43,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-05 20:56:43,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-05 20:56:43,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-05 20:56:43,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-05 20:56:43,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-05 20:56:43,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-05 20:56:43,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-05 20:56:43,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-05 20:56:43,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-05 20:56:43,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-05 20:56:43,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-05 20:56:43,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-05 20:56:43,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-05 20:56:43,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-05 20:56:43,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-05 20:56:43,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-05 20:56:43,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-05 20:56:43,689 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-05 20:56:43,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-05 20:56:43,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-05 20:56:43,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-05 20:56:43,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-05 20:56:43,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-05 20:56:43,692 INFO L138 SettingsManager]: * Use SBE=true [2021-10-05 20:56:43,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-05 20:56:43,693 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-05 20:56:43,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-05 20:56:43,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-05 20:56:43,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-05 20:56:43,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-05 20:56:43,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-05 20:56:43,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-05 20:56:43,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-05 20:56:43,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-05 20:56:43,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-05 20:56:43,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-05 20:56:43,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-05 20:56:43,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-05 20:56:43,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-05 20:56:43,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 20:56:43,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-05 20:56:43,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-05 20:56:43,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-05 20:56:43,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-05 20:56:43,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-05 20:56:43,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-05 20:56:43,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-05 20:56:43,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88a709f6cafff611ad25e52f7246cf0f22d85c74 [2021-10-05 20:56:44,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-05 20:56:44,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-05 20:56:44,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-05 20:56:44,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-05 20:56:44,210 INFO L275 PluginConnector]: CDTParser initialized [2021-10-05 20:56:44,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/time-subst.wvr.c [2021-10-05 20:56:44,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3c8c0303/35876929c33349e9a45faf67101b214d/FLAG8e2b25707 [2021-10-05 20:56:44,996 INFO L306 CDTParser]: Found 1 translation units. [2021-10-05 20:56:44,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/time-subst.wvr.c [2021-10-05 20:56:45,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3c8c0303/35876929c33349e9a45faf67101b214d/FLAG8e2b25707 [2021-10-05 20:56:45,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3c8c0303/35876929c33349e9a45faf67101b214d [2021-10-05 20:56:45,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-05 20:56:45,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-05 20:56:45,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-05 20:56:45,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-05 20:56:45,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-05 20:56:45,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b886a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45, skipping insertion in model container [2021-10-05 20:56:45,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-05 20:56:45,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-05 20:56:45,738 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-subst.wvr.c[2786,2799] [2021-10-05 20:56:45,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 20:56:45,762 INFO L203 MainTranslator]: Completed pre-run [2021-10-05 20:56:45,807 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-subst.wvr.c[2786,2799] [2021-10-05 20:56:45,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 20:56:45,826 INFO L208 MainTranslator]: Completed translation [2021-10-05 20:56:45,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45 WrapperNode [2021-10-05 20:56:45,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-05 20:56:45,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-05 20:56:45,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-05 20:56:45,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-05 20:56:45,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-05 20:56:45,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-05 20:56:45,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-05 20:56:45,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-05 20:56:45,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-05 20:56:45,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-05 20:56:45,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-05 20:56:45,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-05 20:56:45,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 20:56:45,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 20:56:45,942 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) [2021-10-05 20:56:45,957 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 [2021-10-05 20:56:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-05 20:56:46,008 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-05 20:56:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-05 20:56:46,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-05 20:56:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-05 20:56:46,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-05 20:56:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-05 20:56:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-05 20:56:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-05 20:56:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-05 20:56:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-05 20:56:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-05 20:56:46,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-05 20:56:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-05 20:56:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-05 20:56:46,012 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-05 20:56:46,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-05 20:56:46,544 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-05 20:56:46,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 08:56:46 BoogieIcfgContainer [2021-10-05 20:56:46,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-05 20:56:46,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-05 20:56:46,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-05 20:56:46,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-05 20:56:46,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 08:56:45" (1/3) ... [2021-10-05 20:56:46,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7f0774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 08:56:46, skipping insertion in model container [2021-10-05 20:56:46,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (2/3) ... [2021-10-05 20:56:46,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7f0774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 08:56:46, skipping insertion in model container [2021-10-05 20:56:46,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 08:56:46" (3/3) ... [2021-10-05 20:56:46,562 INFO L111 eAbstractionObserver]: Analyzing ICFG time-subst.wvr.c [2021-10-05 20:56:46,569 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-05 20:56:46,569 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-05 20:56:46,569 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-05 20:56:46,570 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-05 20:56:46,608 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,609 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,609 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,609 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,610 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,610 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,613 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,614 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,614 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,617 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,617 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,617 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,619 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,620 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,620 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:46,630 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-05 20:56:46,681 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-05 20:56:46,688 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 [2021-10-05 20:56:46,689 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-05 20:56:46,713 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-05 20:56:46,725 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 98 transitions, 220 flow [2021-10-05 20:56:46,728 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 98 transitions, 220 flow [2021-10-05 20:56:46,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 98 transitions, 220 flow [2021-10-05 20:56:46,813 INFO L129 PetriNetUnfolder]: 1/95 cut-off events. [2021-10-05 20:56:46,814 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-05 20:56:46,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 1/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2021-10-05 20:56:46,822 INFO L116 LiptonReduction]: Number of co-enabled transitions 168 [2021-10-05 20:56:52,507 INFO L131 LiptonReduction]: Checked pairs total: 371 [2021-10-05 20:56:52,508 INFO L133 LiptonReduction]: Total number of compositions: 80 [2021-10-05 20:56:52,520 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 64 flow [2021-10-05 20:56:52,535 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2021-10-05 20:56:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2021-10-05 20:56:52,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-05 20:56:52,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 20:56:52,546 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 20:56:52,546 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 20:56:52,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 20:56:52,553 INFO L82 PathProgramCache]: Analyzing trace with hash 417004638, now seen corresponding path program 1 times [2021-10-05 20:56:52,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 20:56:52,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289174193] [2021-10-05 20:56:52,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 20:56:52,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 20:56:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 20:56:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 20:56:53,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 20:56:53,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289174193] [2021-10-05 20:56:53,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289174193] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 20:56:53,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 20:56:53,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-05 20:56:53,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472723035] [2021-10-05 20:56:53,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-05 20:56:53,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 20:56:53,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-05 20:56:53,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-05 20:56:53,784 INFO L87 Difference]: Start difference. First operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-05 20:56:54,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 20:56:54,019 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2021-10-05 20:56:54,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 20:56:54,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-05 20:56:54,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 20:56:54,030 INFO L225 Difference]: With dead ends: 67 [2021-10-05 20:56:54,031 INFO L226 Difference]: Without dead ends: 52 [2021-10-05 20:56:54,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 279.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-05 20:56:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-05 20:56:54,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-10-05 20:56:54,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 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) [2021-10-05 20:56:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2021-10-05 20:56:54,066 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 16 [2021-10-05 20:56:54,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 20:56:54,066 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2021-10-05 20:56:54,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-05 20:56:54,067 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2021-10-05 20:56:54,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-05 20:56:54,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 20:56:54,068 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 20:56:54,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-05 20:56:54,069 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 20:56:54,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 20:56:54,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1878394488, now seen corresponding path program 2 times [2021-10-05 20:56:54,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 20:56:54,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014713835] [2021-10-05 20:56:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 20:56:54,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 20:56:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 20:56:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 20:56:54,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 20:56:54,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014713835] [2021-10-05 20:56:54,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014713835] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 20:56:54,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 20:56:54,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-05 20:56:54,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185041705] [2021-10-05 20:56:54,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-05 20:56:54,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 20:56:54,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-05 20:56:54,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-05 20:56:54,792 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-05 20:56:54,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 20:56:54,967 INFO L93 Difference]: Finished difference Result 63 states and 94 transitions. [2021-10-05 20:56:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 20:56:54,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-05 20:56:54,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 20:56:54,970 INFO L225 Difference]: With dead ends: 63 [2021-10-05 20:56:54,970 INFO L226 Difference]: Without dead ends: 44 [2021-10-05 20:56:54,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 213.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-05 20:56:54,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-05 20:56:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2021-10-05 20:56:54,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 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) [2021-10-05 20:56:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-10-05 20:56:54,977 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 16 [2021-10-05 20:56:54,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 20:56:54,977 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-10-05 20:56:54,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-05 20:56:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2021-10-05 20:56:54,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-05 20:56:54,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 20:56:54,978 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 20:56:54,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-05 20:56:54,979 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 20:56:54,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 20:56:54,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1300002318, now seen corresponding path program 3 times [2021-10-05 20:56:54,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 20:56:54,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459973749] [2021-10-05 20:56:54,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 20:56:54,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 20:56:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 20:56:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 20:56:55,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 20:56:55,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459973749] [2021-10-05 20:56:55,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459973749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 20:56:55,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 20:56:55,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-05 20:56:55,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779652943] [2021-10-05 20:56:55,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-05 20:56:55,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 20:56:55,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-05 20:56:55,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-05 20:56:55,628 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-05 20:56:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 20:56:55,970 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2021-10-05 20:56:55,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 20:56:55,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-05 20:56:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 20:56:55,972 INFO L225 Difference]: With dead ends: 51 [2021-10-05 20:56:55,972 INFO L226 Difference]: Without dead ends: 36 [2021-10-05 20:56:55,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 429.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-05 20:56:55,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-05 20:56:55,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-10-05 20:56:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 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) [2021-10-05 20:56:55,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2021-10-05 20:56:55,977 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 16 [2021-10-05 20:56:55,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 20:56:55,978 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2021-10-05 20:56:55,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-05 20:56:55,978 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2021-10-05 20:56:55,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-05 20:56:55,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 20:56:55,979 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 20:56:55,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-05 20:56:55,980 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 20:56:55,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 20:56:55,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1850339148, now seen corresponding path program 4 times [2021-10-05 20:56:55,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 20:56:55,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141645961] [2021-10-05 20:56:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 20:56:55,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 20:56:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 20:56:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 20:56:56,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 20:56:56,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141645961] [2021-10-05 20:56:56,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141645961] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 20:56:56,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 20:56:56,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-05 20:56:56,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552172472] [2021-10-05 20:56:56,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-05 20:56:56,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 20:56:56,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-05 20:56:56,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-05 20:56:56,558 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-05 20:56:56,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 20:56:56,802 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2021-10-05 20:56:56,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 20:56:56,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-05 20:56:56,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 20:56:56,803 INFO L225 Difference]: With dead ends: 37 [2021-10-05 20:56:56,803 INFO L226 Difference]: Without dead ends: 24 [2021-10-05 20:56:56,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 306.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-05 20:56:56,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-05 20:56:56,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-05 20:56:56,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 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) [2021-10-05 20:56:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-10-05 20:56:56,808 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2021-10-05 20:56:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 20:56:56,808 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-10-05 20:56:56,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-05 20:56:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-10-05 20:56:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-05 20:56:56,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 20:56:56,810 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 20:56:56,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-05 20:56:56,811 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 20:56:56,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 20:56:56,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1640655766, now seen corresponding path program 5 times [2021-10-05 20:56:56,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 20:56:56,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915224041] [2021-10-05 20:56:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 20:56:56,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 20:56:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 20:56:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 20:56:57,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 20:56:57,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915224041] [2021-10-05 20:56:57,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915224041] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 20:56:57,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 20:56:57,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-05 20:56:57,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67717067] [2021-10-05 20:56:57,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-05 20:56:57,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 20:56:57,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-05 20:56:57,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-05 20:56:57,182 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-05 20:56:57,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 20:56:57,350 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-10-05 20:56:57,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 20:56:57,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-05 20:56:57,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 20:56:57,351 INFO L225 Difference]: With dead ends: 31 [2021-10-05 20:56:57,351 INFO L226 Difference]: Without dead ends: 22 [2021-10-05 20:56:57,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 211.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-05 20:56:57,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-05 20:56:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-05 20:56:57,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2021-10-05 20:56:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-05 20:56:57,355 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2021-10-05 20:56:57,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 20:56:57,356 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-05 20:56:57,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-05 20:56:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-05 20:56:57,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-05 20:56:57,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 20:56:57,357 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 20:56:57,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-05 20:56:57,358 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 20:56:57,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 20:56:57,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1773435098, now seen corresponding path program 6 times [2021-10-05 20:56:57,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 20:56:57,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573501015] [2021-10-05 20:56:57,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 20:56:57,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 20:56:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 20:56:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 20:56:57,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 20:56:57,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573501015] [2021-10-05 20:56:57,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573501015] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 20:56:57,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 20:56:57,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-05 20:56:57,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758184042] [2021-10-05 20:56:57,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-05 20:56:57,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 20:56:57,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-05 20:56:57,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-05 20:56:57,641 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-05 20:56:57,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 20:56:57,802 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-05 20:56:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 20:56:57,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-05 20:56:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 20:56:57,803 INFO L225 Difference]: With dead ends: 21 [2021-10-05 20:56:57,803 INFO L226 Difference]: Without dead ends: 0 [2021-10-05 20:56:57,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 210.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-05 20:56:57,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-05 20:56:57,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-05 20:56:57,804 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) [2021-10-05 20:56:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-05 20:56:57,804 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-05 20:56:57,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 20:56:57,805 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-05 20:56:57,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-05 20:56:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-05 20:56:57,805 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-05 20:56:57,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-05 20:56:57,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-05 20:56:57,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-05 20:56:57,809 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-05 20:56:57,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-05 20:56:57,812 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-05 20:56:57,813 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-05 20:56:57,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 08:56:57 BasicIcfg [2021-10-05 20:56:57,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-05 20:56:57,815 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-05 20:56:57,815 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-05 20:56:57,815 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-05 20:56:57,816 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 08:56:46" (3/4) ... [2021-10-05 20:56:57,819 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-05 20:56:57,824 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-05 20:56:57,824 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-05 20:56:57,825 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-05 20:56:57,831 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-05 20:56:57,831 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-05 20:56:57,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-05 20:56:57,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-05 20:56:57,881 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-05 20:56:57,881 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-05 20:56:57,883 INFO L168 Benchmark]: Toolchain (without parser) took 12510.85 ms. Allocated memory was 48.2 MB in the beginning and 107.0 MB in the end (delta: 58.7 MB). Free memory was 24.6 MB in the beginning and 32.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:57,884 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 48.2 MB. Free memory was 29.2 MB in the beginning and 29.2 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-05 20:56:57,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.22 ms. Allocated memory is still 48.2 MB. Free memory was 24.2 MB in the beginning and 25.2 MB in the end (delta: -1.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:57,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.08 ms. Allocated memory is still 48.2 MB. Free memory was 25.2 MB in the beginning and 23.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:57,886 INFO L168 Benchmark]: Boogie Preprocessor took 27.62 ms. Allocated memory is still 48.2 MB. Free memory was 23.5 MB in the beginning and 22.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:57,887 INFO L168 Benchmark]: RCFGBuilder took 649.23 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.3 MB in the beginning and 30.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:57,887 INFO L168 Benchmark]: TraceAbstraction took 11264.32 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 29.5 MB in the beginning and 35.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:57,888 INFO L168 Benchmark]: Witness Printer took 66.06 ms. Allocated memory is still 107.0 MB. Free memory was 35.8 MB in the beginning and 32.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:57,892 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 48.2 MB. Free memory was 29.2 MB in the beginning and 29.2 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 444.22 ms. Allocated memory is still 48.2 MB. Free memory was 24.2 MB in the beginning and 25.2 MB in the end (delta: -1.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.08 ms. Allocated memory is still 48.2 MB. Free memory was 25.2 MB in the beginning and 23.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.62 ms. Allocated memory is still 48.2 MB. Free memory was 23.5 MB in the beginning and 22.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 649.23 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.3 MB in the beginning and 30.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11264.32 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 29.5 MB in the beginning and 35.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. * Witness Printer took 66.06 ms. Allocated memory is still 107.0 MB. Free memory was 35.8 MB in the beginning and 32.7 MB in the end (delta: 3.1 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: 5779.5ms, 107 PlacesBefore, 30 PlacesAfterwards, 98 TransitionsBefore, 20 TransitionsAfterwards, 168 CoEnabledTransitionPairs, 7 FixpointIterations, 64 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 80 TotalNumberOfCompositions, 371 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 371, positive: 371, positive conditional: 0, positive unconditional: 371, 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: 141, positive: 141, positive conditional: 0, positive unconditional: 141, 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: 141, positive: 141, positive conditional: 0, positive unconditional: 141, 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: 371, positive: 230, positive conditional: 0, positive unconditional: 230, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 141, unknown conditional: 0, unknown unconditional: 141] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, 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: 86]: 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 7 procedures, 110 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 11133.2ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 13.8ms, AutomataDifference: 1373.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5846.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 141 SDtfs, 142 SDslu, 221 SDs, 0 SdLazy, 98 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 172.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1651.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 39.1ms AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.4ms SsaConstructionTime, 440.0ms SatisfiabilityAnalysisTime, 3192.8ms InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 4148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2021-10-05 20:56:57,946 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...