./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94ac66895917d32482f796d3410ed655309b41e1 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 22:23:16,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:23:16,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:23:16,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:23:16,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:23:16,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:23:16,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:23:16,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:23:16,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:23:16,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:23:16,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:23:16,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:23:16,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:23:16,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:23:16,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:23:16,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:23:16,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:23:16,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:23:16,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:23:16,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:23:16,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:23:16,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:23:16,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:23:16,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:23:16,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:23:16,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:23:16,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:23:16,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:23:16,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:23:16,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:23:16,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:23:16,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:23:16,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:23:16,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:23:16,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:23:16,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:23:16,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:23:16,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:23:16,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:23:16,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:23:16,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:23:16,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:23:16,595 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:23:16,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:23:16,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:23:16,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:23:16,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:23:16,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:23:16,601 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:23:16,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:23:16,602 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:23:16,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:23:16,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:23:16,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:23:16,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:23:16,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:23:16,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:23:16,604 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:23:16,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:23:16,604 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:23:16,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:23:16,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:23:16,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:23:16,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:23:16,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:23:16,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:23:16,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:23:16,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:23:16,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:23:16,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:23:16,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:23:16,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:23:16,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94ac66895917d32482f796d3410ed655309b41e1 [2021-08-29 22:23:16,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:23:16,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:23:16,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:23:16,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:23:16,984 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:23:16,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i [2021-08-29 22:23:17,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330ee3987/7aa3a68c6a464ef3ab4ce0087fa69b8d/FLAG41dbc6dbc [2021-08-29 22:23:17,575 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:23:17,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i [2021-08-29 22:23:17,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330ee3987/7aa3a68c6a464ef3ab4ce0087fa69b8d/FLAG41dbc6dbc [2021-08-29 22:23:17,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330ee3987/7aa3a68c6a464ef3ab4ce0087fa69b8d [2021-08-29 22:23:17,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:23:17,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:23:17,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:23:17,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:23:17,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:23:17,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:23:17" (1/1) ... [2021-08-29 22:23:17,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d68748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:17, skipping insertion in model container [2021-08-29 22:23:17,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:23:17" (1/1) ... [2021-08-29 22:23:17,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:23:17,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:23:18,089 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i[949,962] [2021-08-29 22:23:18,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:23:18,280 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:23:18,293 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i[949,962] [2021-08-29 22:23:18,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:23:18,388 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:23:18,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:18 WrapperNode [2021-08-29 22:23:18,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:23:18,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:23:18,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:23:18,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:23:18,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:18" (1/1) ... [2021-08-29 22:23:18,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:18" (1/1) ... [2021-08-29 22:23:18,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:23:18,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:23:18,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:23:18,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:23:18,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:18" (1/1) ... [2021-08-29 22:23:18,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:18" (1/1) ... [2021-08-29 22:23:18,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:18" (1/1) ... [2021-08-29 22:23:18,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:18" (1/1) ... [2021-08-29 22:23:18,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:18" (1/1) ... [2021-08-29 22:23:18,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:18" (1/1) ... [2021-08-29 22:23:18,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:18" (1/1) ... [2021-08-29 22:23:18,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:23:18,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:23:18,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:23:18,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:23:18,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:18" (1/1) ... [2021-08-29 22:23:18,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:23:18,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:23:18,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 22:23:18,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 22:23:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:23:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-29 22:23:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:23:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:23:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-29 22:23:18,596 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-29 22:23:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-29 22:23:18,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-29 22:23:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-29 22:23:18,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-29 22:23:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-08-29 22:23:18,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-08-29 22:23:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:23:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-29 22:23:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:23:18,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:23:18,599 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-29 22:23:18,821 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:23:18,822 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 22:23:18,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:23:18 BoogieIcfgContainer [2021-08-29 22:23:18,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:23:18,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:23:18,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:23:18,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:23:18,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:23:17" (1/3) ... [2021-08-29 22:23:18,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64eec2ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:23:18, skipping insertion in model container [2021-08-29 22:23:18,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:23:18" (2/3) ... [2021-08-29 22:23:18,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64eec2ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:23:18, skipping insertion in model container [2021-08-29 22:23:18,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:23:18" (3/3) ... [2021-08-29 22:23:18,832 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_tso.opt.i [2021-08-29 22:23:18,842 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:23:18,842 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:23:18,843 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 22:23:18,843 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:23:18,900 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,901 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,901 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,901 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,902 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,902 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,902 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,902 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,903 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,905 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,906 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,906 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,906 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,906 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,907 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,908 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,908 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,908 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,908 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,909 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,909 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,910 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,910 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,910 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,911 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,911 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,911 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,911 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,911 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,912 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,912 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,912 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,913 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,913 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,913 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,913 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,913 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,914 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,914 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,914 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,914 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,915 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,915 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,915 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,917 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,919 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,921 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,921 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,921 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,926 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,927 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,927 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,927 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,929 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,930 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,930 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,930 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,932 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,932 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:23:18,934 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-29 22:23:18,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:23:18,982 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 [2021-08-29 22:23:18,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-29 22:23:18,993 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:23:19,003 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 98 transitions, 216 flow [2021-08-29 22:23:19,005 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 98 transitions, 216 flow [2021-08-29 22:23:19,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 109 places, 98 transitions, 216 flow [2021-08-29 22:23:19,049 INFO L129 PetriNetUnfolder]: 2/94 cut-off events. [2021-08-29 22:23:19,050 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-29 22:23:19,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 94 events. 2/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2021-08-29 22:23:19,056 INFO L116 LiptonReduction]: Number of co-enabled transitions 2114 [2021-08-29 22:23:21,914 INFO L131 LiptonReduction]: Checked pairs total: 3767 [2021-08-29 22:23:21,915 INFO L133 LiptonReduction]: Total number of compositions: 82 [2021-08-29 22:23:21,923 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2021-08-29 22:23:21,977 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 706 states, 705 states have (on average 3.668085106382979) internal successors, (2586), 705 states have internal predecessors, (2586), 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) [2021-08-29 22:23:21,983 INFO L276 IsEmpty]: Start isEmpty. Operand has 706 states, 705 states have (on average 3.668085106382979) internal successors, (2586), 705 states have internal predecessors, (2586), 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) [2021-08-29 22:23:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:23:21,991 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:21,991 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:21,992 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:21,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:21,996 INFO L82 PathProgramCache]: Analyzing trace with hash -855573413, now seen corresponding path program 1 times [2021-08-29 22:23:22,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:22,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911483065] [2021-08-29 22:23:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:22,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:22,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:22,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911483065] [2021-08-29 22:23:22,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911483065] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:22,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:22,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:23:22,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113093621] [2021-08-29 22:23:22,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 22:23:22,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 22:23:22,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 22:23:22,284 INFO L87 Difference]: Start difference. First operand has 706 states, 705 states have (on average 3.668085106382979) internal successors, (2586), 705 states have internal predecessors, (2586), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-29 22:23:22,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:22,344 INFO L93 Difference]: Finished difference Result 706 states and 2442 transitions. [2021-08-29 22:23:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 22:23:22,347 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-08-29 22:23:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:22,377 INFO L225 Difference]: With dead ends: 706 [2021-08-29 22:23:22,377 INFO L226 Difference]: Without dead ends: 706 [2021-08-29 22:23:22,378 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 22:23:22,382 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.80ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:22,384 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 6 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 10.80ms Time] [2021-08-29 22:23:22,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-08-29 22:23:22,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2021-08-29 22:23:22,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 3.4638297872340424) internal successors, (2442), 705 states have internal predecessors, (2442), 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) [2021-08-29 22:23:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2021-08-29 22:23:22,510 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2021-08-29 22:23:22,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:22,511 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2021-08-29 22:23:22,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-29 22:23:22,513 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2021-08-29 22:23:22,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 22:23:22,521 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:22,522 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:22,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:23:22,523 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:22,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:22,525 INFO L82 PathProgramCache]: Analyzing trace with hash -752977543, now seen corresponding path program 1 times [2021-08-29 22:23:22,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:22,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122645993] [2021-08-29 22:23:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:22,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:22,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:22,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122645993] [2021-08-29 22:23:22,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122645993] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:22,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:22,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:23:22,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756443270] [2021-08-29 22:23:22,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:22,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:22,683 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-08-29 22:23:22,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:22,747 INFO L93 Difference]: Finished difference Result 1210 states and 3960 transitions. [2021-08-29 22:23:22,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:22,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2021-08-29 22:23:22,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:22,771 INFO L225 Difference]: With dead ends: 1210 [2021-08-29 22:23:22,771 INFO L226 Difference]: Without dead ends: 952 [2021-08-29 22:23:22,772 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.44ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:22,773 INFO L928 BasicCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.47ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:22,773 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 54 Invalid, 40 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 30.47ms Time] [2021-08-29 22:23:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-08-29 22:23:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 820. [2021-08-29 22:23:22,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 3.3675213675213675) internal successors, (2758), 819 states have internal predecessors, (2758), 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) [2021-08-29 22:23:22,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2758 transitions. [2021-08-29 22:23:22,808 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2758 transitions. Word has length 11 [2021-08-29 22:23:22,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:22,808 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 2758 transitions. [2021-08-29 22:23:22,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-08-29 22:23:22,809 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2758 transitions. [2021-08-29 22:23:22,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 22:23:22,810 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:22,810 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:22,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:23:22,811 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:22,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:22,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1046139535, now seen corresponding path program 1 times [2021-08-29 22:23:22,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:22,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677947495] [2021-08-29 22:23:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:22,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:22,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:22,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677947495] [2021-08-29 22:23:22,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677947495] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:22,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:22,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:22,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410089685] [2021-08-29 22:23:22,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:22,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:22,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:22,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:22,907 INFO L87 Difference]: Start difference. First operand 820 states and 2758 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-08-29 22:23:22,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:22,998 INFO L93 Difference]: Finished difference Result 1066 states and 3408 transitions. [2021-08-29 22:23:22,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 22:23:22,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-08-29 22:23:22,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:23,006 INFO L225 Difference]: With dead ends: 1066 [2021-08-29 22:23:23,006 INFO L226 Difference]: Without dead ends: 886 [2021-08-29 22:23:23,007 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.92ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:23:23,009 INFO L928 BasicCegarLoop]: 23 mSDtfsCounter, 40 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.89ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.40ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:23,011 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 79 Invalid, 49 Unknown, 0 Unchecked, 1.89ms Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 53.40ms Time] [2021-08-29 22:23:23,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-08-29 22:23:23,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 754. [2021-08-29 22:23:23,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 3.309428950863214) internal successors, (2492), 753 states have internal predecessors, (2492), 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) [2021-08-29 22:23:23,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2492 transitions. [2021-08-29 22:23:23,042 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2492 transitions. Word has length 12 [2021-08-29 22:23:23,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:23,042 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 2492 transitions. [2021-08-29 22:23:23,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-08-29 22:23:23,042 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2492 transitions. [2021-08-29 22:23:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 22:23:23,044 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:23,044 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:23,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:23:23,044 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:23,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:23,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1468457750, now seen corresponding path program 1 times [2021-08-29 22:23:23,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:23,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276595392] [2021-08-29 22:23:23,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:23,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:23,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:23,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276595392] [2021-08-29 22:23:23,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276595392] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:23,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:23,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:23:23,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367377944] [2021-08-29 22:23:23,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:23,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:23,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:23,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:23,128 INFO L87 Difference]: Start difference. First operand 754 states and 2492 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-08-29 22:23:23,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:23,161 INFO L93 Difference]: Finished difference Result 808 states and 2600 transitions. [2021-08-29 22:23:23,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:23,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-08-29 22:23:23,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:23,177 INFO L225 Difference]: With dead ends: 808 [2021-08-29 22:23:23,177 INFO L226 Difference]: Without dead ends: 700 [2021-08-29 22:23:23,180 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.83ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:23,184 INFO L928 BasicCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.19ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:23,185 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 52 Invalid, 27 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 17.19ms Time] [2021-08-29 22:23:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-08-29 22:23:23,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 676. [2021-08-29 22:23:23,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 3.268148148148148) internal successors, (2206), 675 states have internal predecessors, (2206), 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) [2021-08-29 22:23:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 2206 transitions. [2021-08-29 22:23:23,209 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 2206 transitions. Word has length 12 [2021-08-29 22:23:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:23,210 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 2206 transitions. [2021-08-29 22:23:23,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-08-29 22:23:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 2206 transitions. [2021-08-29 22:23:23,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:23:23,211 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:23,212 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:23,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:23:23,212 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:23,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:23,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1406512320, now seen corresponding path program 1 times [2021-08-29 22:23:23,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:23,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471568729] [2021-08-29 22:23:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:23,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:23,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:23,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471568729] [2021-08-29 22:23:23,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471568729] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:23,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:23,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:23:23,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887569508] [2021-08-29 22:23:23,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:23,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:23,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:23,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:23,254 INFO L87 Difference]: Start difference. First operand 676 states and 2206 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-08-29 22:23:23,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:23,285 INFO L93 Difference]: Finished difference Result 739 states and 2353 transitions. [2021-08-29 22:23:23,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:23,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-08-29 22:23:23,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:23,289 INFO L225 Difference]: With dead ends: 739 [2021-08-29 22:23:23,290 INFO L226 Difference]: Without dead ends: 658 [2021-08-29 22:23:23,290 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:23,290 INFO L928 BasicCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.85ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.64ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:23,291 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 45 Invalid, 28 Unknown, 0 Unchecked, 0.85ms Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 17.64ms Time] [2021-08-29 22:23:23,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-08-29 22:23:23,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2021-08-29 22:23:23,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 3.2389649923896497) internal successors, (2128), 657 states have internal predecessors, (2128), 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) [2021-08-29 22:23:23,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2128 transitions. [2021-08-29 22:23:23,309 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2128 transitions. Word has length 13 [2021-08-29 22:23:23,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:23,310 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 2128 transitions. [2021-08-29 22:23:23,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-08-29 22:23:23,311 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2128 transitions. [2021-08-29 22:23:23,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:23:23,313 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:23,313 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:23,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 22:23:23,313 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:23,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:23,314 INFO L82 PathProgramCache]: Analyzing trace with hash 650738880, now seen corresponding path program 1 times [2021-08-29 22:23:23,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:23,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566498566] [2021-08-29 22:23:23,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:23,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:23,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:23,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566498566] [2021-08-29 22:23:23,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566498566] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:23,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:23,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:23,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629902436] [2021-08-29 22:23:23,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:23,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:23,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:23,364 INFO L87 Difference]: Start difference. First operand 658 states and 2128 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-08-29 22:23:23,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:23,405 INFO L93 Difference]: Finished difference Result 940 states and 2997 transitions. [2021-08-29 22:23:23,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:23,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-08-29 22:23:23,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:23,409 INFO L225 Difference]: With dead ends: 940 [2021-08-29 22:23:23,409 INFO L226 Difference]: Without dead ends: 490 [2021-08-29 22:23:23,410 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.35ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:23:23,410 INFO L928 BasicCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.55ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.90ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:23,410 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 55 Invalid, 35 Unknown, 0 Unchecked, 0.55ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 23.90ms Time] [2021-08-29 22:23:23,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-08-29 22:23:23,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2021-08-29 22:23:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.198364008179959) internal successors, (1564), 489 states have internal predecessors, (1564), 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) [2021-08-29 22:23:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1564 transitions. [2021-08-29 22:23:23,425 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1564 transitions. Word has length 14 [2021-08-29 22:23:23,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:23,425 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 1564 transitions. [2021-08-29 22:23:23,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-08-29 22:23:23,426 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1564 transitions. [2021-08-29 22:23:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:23:23,427 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:23,427 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:23,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 22:23:23,427 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:23,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:23,428 INFO L82 PathProgramCache]: Analyzing trace with hash 131466755, now seen corresponding path program 1 times [2021-08-29 22:23:23,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:23,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658945179] [2021-08-29 22:23:23,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:23,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:23,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:23,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658945179] [2021-08-29 22:23:23,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658945179] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:23,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:23,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:23,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512152299] [2021-08-29 22:23:23,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:23,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:23,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:23,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:23,462 INFO L87 Difference]: Start difference. First operand 490 states and 1564 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-08-29 22:23:23,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:23,493 INFO L93 Difference]: Finished difference Result 712 states and 2183 transitions. [2021-08-29 22:23:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:23,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-08-29 22:23:23,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:23,497 INFO L225 Difference]: With dead ends: 712 [2021-08-29 22:23:23,497 INFO L226 Difference]: Without dead ends: 502 [2021-08-29 22:23:23,498 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:23,498 INFO L928 BasicCegarLoop]: 27 mSDtfsCounter, 20 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.34ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:23,498 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 61 Invalid, 33 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 20.34ms Time] [2021-08-29 22:23:23,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-08-29 22:23:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 430. [2021-08-29 22:23:23,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.090909090909091) internal successors, (1326), 429 states have internal predecessors, (1326), 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) [2021-08-29 22:23:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1326 transitions. [2021-08-29 22:23:23,512 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1326 transitions. Word has length 14 [2021-08-29 22:23:23,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:23,512 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 1326 transitions. [2021-08-29 22:23:23,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-08-29 22:23:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1326 transitions. [2021-08-29 22:23:23,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:23:23,514 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:23,514 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:23,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 22:23:23,514 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:23,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:23,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1903921432, now seen corresponding path program 2 times [2021-08-29 22:23:23,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:23,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815609378] [2021-08-29 22:23:23,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:23,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:23,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:23,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815609378] [2021-08-29 22:23:23,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815609378] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:23,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:23,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:23,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077002433] [2021-08-29 22:23:23,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:23,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:23,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:23,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:23,556 INFO L87 Difference]: Start difference. First operand 430 states and 1326 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-08-29 22:23:23,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:23,618 INFO L93 Difference]: Finished difference Result 616 states and 1839 transitions. [2021-08-29 22:23:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:23:23,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-08-29 22:23:23,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:23,621 INFO L225 Difference]: With dead ends: 616 [2021-08-29 22:23:23,621 INFO L226 Difference]: Without dead ends: 310 [2021-08-29 22:23:23,622 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.51ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-29 22:23:23,623 INFO L928 BasicCegarLoop]: 18 mSDtfsCounter, 44 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.53ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.16ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:23,623 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 57 Invalid, 38 Unknown, 0 Unchecked, 0.53ms Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 38.16ms Time] [2021-08-29 22:23:23,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-08-29 22:23:23,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2021-08-29 22:23:23,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 2.896440129449838) internal successors, (895), 309 states have internal predecessors, (895), 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) [2021-08-29 22:23:23,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 895 transitions. [2021-08-29 22:23:23,633 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 895 transitions. Word has length 14 [2021-08-29 22:23:23,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:23,633 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 895 transitions. [2021-08-29 22:23:23,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-08-29 22:23:23,634 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 895 transitions. [2021-08-29 22:23:23,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 22:23:23,635 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:23,635 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:23,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 22:23:23,635 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:23,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:23,636 INFO L82 PathProgramCache]: Analyzing trace with hash 466133286, now seen corresponding path program 1 times [2021-08-29 22:23:23,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:23,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195850649] [2021-08-29 22:23:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:23,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:23,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:23,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195850649] [2021-08-29 22:23:23,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195850649] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:23,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:23,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:23:23,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502989343] [2021-08-29 22:23:23,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:23:23,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:23,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:23:23,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:23:23,683 INFO L87 Difference]: Start difference. First operand 310 states and 895 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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) [2021-08-29 22:23:23,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:23,719 INFO L93 Difference]: Finished difference Result 377 states and 1011 transitions. [2021-08-29 22:23:23,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:23:23,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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) Word has length 15 [2021-08-29 22:23:23,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:23,721 INFO L225 Difference]: With dead ends: 377 [2021-08-29 22:23:23,721 INFO L226 Difference]: Without dead ends: 284 [2021-08-29 22:23:23,721 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.80ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:23,722 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.15ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:23,722 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 35 Invalid, 48 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 26.15ms Time] [2021-08-29 22:23:23,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-08-29 22:23:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-08-29 22:23:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 2.7385159010600706) internal successors, (775), 283 states have internal predecessors, (775), 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) [2021-08-29 22:23:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 775 transitions. [2021-08-29 22:23:23,730 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 775 transitions. Word has length 15 [2021-08-29 22:23:23,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:23,731 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 775 transitions. [2021-08-29 22:23:23,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 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) [2021-08-29 22:23:23,731 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 775 transitions. [2021-08-29 22:23:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 22:23:23,732 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:23,732 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:23,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 22:23:23,732 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:23,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:23,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2068885176, now seen corresponding path program 1 times [2021-08-29 22:23:23,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:23,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273026203] [2021-08-29 22:23:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:23,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:23,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:23,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273026203] [2021-08-29 22:23:23,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273026203] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:23,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:23,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:23:23,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907081037] [2021-08-29 22:23:23,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:23,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:23,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:23,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:23,776 INFO L87 Difference]: Start difference. First operand 284 states and 775 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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) [2021-08-29 22:23:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:23,821 INFO L93 Difference]: Finished difference Result 298 states and 737 transitions. [2021-08-29 22:23:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:23:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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 [2021-08-29 22:23:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:23,823 INFO L225 Difference]: With dead ends: 298 [2021-08-29 22:23:23,823 INFO L226 Difference]: Without dead ends: 223 [2021-08-29 22:23:23,823 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.75ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:23:23,827 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.89ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:23,828 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 46 Invalid, 65 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 34.89ms Time] [2021-08-29 22:23:23,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-08-29 22:23:23,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-08-29 22:23:23,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.4504504504504503) internal successors, (544), 222 states have internal predecessors, (544), 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) [2021-08-29 22:23:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 544 transitions. [2021-08-29 22:23:23,835 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 544 transitions. Word has length 16 [2021-08-29 22:23:23,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:23,835 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 544 transitions. [2021-08-29 22:23:23,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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) [2021-08-29 22:23:23,836 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 544 transitions. [2021-08-29 22:23:23,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 22:23:23,836 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:23,837 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:23,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-29 22:23:23,837 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:23,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:23,838 INFO L82 PathProgramCache]: Analyzing trace with hash -289436797, now seen corresponding path program 1 times [2021-08-29 22:23:23,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:23,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404022769] [2021-08-29 22:23:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:23,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:23,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:23,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404022769] [2021-08-29 22:23:23,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404022769] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:23,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:23,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 22:23:23,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432383290] [2021-08-29 22:23:23,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:23:23,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:23:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:23:23,890 INFO L87 Difference]: Start difference. First operand 223 states and 544 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-08-29 22:23:23,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:23,943 INFO L93 Difference]: Finished difference Result 207 states and 474 transitions. [2021-08-29 22:23:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 22:23:23,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-08-29 22:23:23,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:23,945 INFO L225 Difference]: With dead ends: 207 [2021-08-29 22:23:23,945 INFO L226 Difference]: Without dead ends: 169 [2021-08-29 22:23:23,946 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.68ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:23:23,947 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 62 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.73ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:23,947 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 51 Invalid, 74 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [15 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 42.73ms Time] [2021-08-29 22:23:23,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-08-29 22:23:23,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-08-29 22:23:23,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.3095238095238093) internal successors, (388), 168 states have internal predecessors, (388), 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) [2021-08-29 22:23:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 388 transitions. [2021-08-29 22:23:23,953 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 388 transitions. Word has length 17 [2021-08-29 22:23:23,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:23,953 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 388 transitions. [2021-08-29 22:23:23,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-08-29 22:23:23,954 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 388 transitions. [2021-08-29 22:23:23,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 22:23:23,954 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:23,955 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:23,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-29 22:23:23,955 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:23,956 INFO L82 PathProgramCache]: Analyzing trace with hash -2098220685, now seen corresponding path program 1 times [2021-08-29 22:23:23,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:23,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939590112] [2021-08-29 22:23:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:23,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:24,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:24,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939590112] [2021-08-29 22:23:24,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939590112] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:24,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:24,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 22:23:24,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135234031] [2021-08-29 22:23:24,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:23:24,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:24,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:23:24,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:23:24,027 INFO L87 Difference]: Start difference. First operand 169 states and 388 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-08-29 22:23:24,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:24,067 INFO L93 Difference]: Finished difference Result 209 states and 466 transitions. [2021-08-29 22:23:24,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 22:23:24,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2021-08-29 22:23:24,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:24,069 INFO L225 Difference]: With dead ends: 209 [2021-08-29 22:23:24,069 INFO L226 Difference]: Without dead ends: 136 [2021-08-29 22:23:24,070 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.77ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-29 22:23:24,070 INFO L928 BasicCegarLoop]: 27 mSDtfsCounter, 44 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.40ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:24,071 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 79 Invalid, 48 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 28.40ms Time] [2021-08-29 22:23:24,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-08-29 22:23:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2021-08-29 22:23:24,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.122137404580153) internal successors, (278), 131 states have internal predecessors, (278), 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) [2021-08-29 22:23:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 278 transitions. [2021-08-29 22:23:24,075 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 278 transitions. Word has length 19 [2021-08-29 22:23:24,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:24,075 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 278 transitions. [2021-08-29 22:23:24,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-08-29 22:23:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 278 transitions. [2021-08-29 22:23:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 22:23:24,076 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:24,077 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:24,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-29 22:23:24,077 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:24,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:24,078 INFO L82 PathProgramCache]: Analyzing trace with hash -142225233, now seen corresponding path program 2 times [2021-08-29 22:23:24,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:24,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424223599] [2021-08-29 22:23:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:24,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:24,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:24,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424223599] [2021-08-29 22:23:24,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424223599] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:24,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:24,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 22:23:24,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744091091] [2021-08-29 22:23:24,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 22:23:24,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:24,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 22:23:24,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:23:24,153 INFO L87 Difference]: Start difference. First operand 132 states and 278 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-08-29 22:23:24,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:24,209 INFO L93 Difference]: Finished difference Result 121 states and 254 transitions. [2021-08-29 22:23:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 22:23:24,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2021-08-29 22:23:24,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:24,210 INFO L225 Difference]: With dead ends: 121 [2021-08-29 22:23:24,210 INFO L226 Difference]: Without dead ends: 72 [2021-08-29 22:23:24,211 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.37ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-29 22:23:24,211 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 73 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.66ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.84ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:24,212 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 40 Invalid, 85 Unknown, 0 Unchecked, 0.66ms Time], IncrementalHoareTripleChecker [25 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 43.84ms Time] [2021-08-29 22:23:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-29 22:23:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-08-29 22:23:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.028169014084507) internal successors, (144), 71 states have internal predecessors, (144), 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) [2021-08-29 22:23:24,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 144 transitions. [2021-08-29 22:23:24,215 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 144 transitions. Word has length 19 [2021-08-29 22:23:24,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:24,215 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 144 transitions. [2021-08-29 22:23:24,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-08-29 22:23:24,216 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 144 transitions. [2021-08-29 22:23:24,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 22:23:24,216 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:23:24,216 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:23:24,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-29 22:23:24,217 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:23:24,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:23:24,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1685666813, now seen corresponding path program 1 times [2021-08-29 22:23:24,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:23:24,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085768064] [2021-08-29 22:23:24,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:23:24,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:23:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:23:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:23:24,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:23:24,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085768064] [2021-08-29 22:23:24,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085768064] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:23:24,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:23:24,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:23:24,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758789046] [2021-08-29 22:23:24,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:23:24,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:23:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:23:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:23:24,287 INFO L87 Difference]: Start difference. First operand 72 states and 144 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-08-29 22:23:24,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:23:24,328 INFO L93 Difference]: Finished difference Result 71 states and 143 transitions. [2021-08-29 22:23:24,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:23:24,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2021-08-29 22:23:24,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:23:24,329 INFO L225 Difference]: With dead ends: 71 [2021-08-29 22:23:24,329 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:23:24,329 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.68ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:23:24,330 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.31ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.66ms IncrementalHoareTripleChecker+Time [2021-08-29 22:23:24,330 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 37 Invalid, 30 Unknown, 0 Unchecked, 0.31ms Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 15.66ms Time] [2021-08-29 22:23:24,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:23:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:23:24,332 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) [2021-08-29 22:23:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:23:24,332 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-08-29 22:23:24,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:23:24,332 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:23:24,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-08-29 22:23:24,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:23:24,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:23:24,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-08-29 22:23:24,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2021-08-29 22:23:24,336 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2021-08-29 22:23:24,336 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2021-08-29 22:23:24,336 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2021-08-29 22:23:24,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-29 22:23:24,341 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:23:24,341 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:23:24,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:23:24 BasicIcfg [2021-08-29 22:23:24,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:23:24,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:23:24,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:23:24,346 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:23:24,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:23:18" (3/4) ... [2021-08-29 22:23:24,348 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:23:24,353 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-29 22:23:24,354 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-29 22:23:24,354 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-08-29 22:23:24,354 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-08-29 22:23:24,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-08-29 22:23:24,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:23:24,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:23:24,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:23:24,391 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:23:24,391 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:23:24,392 INFO L158 Benchmark]: Toolchain (without parser) took 6518.54ms. Allocated memory was 50.3MB in the beginning and 111.1MB in the end (delta: 60.8MB). Free memory was 26.1MB in the beginning and 79.5MB in the end (delta: -53.4MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-08-29 22:23:24,392 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 50.3MB. Free memory was 32.4MB in the beginning and 32.4MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:23:24,393 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.84ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 25.9MB in the beginning and 37.4MB in the end (delta: -11.5MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2021-08-29 22:23:24,393 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.97ms. Allocated memory is still 62.9MB. Free memory was 37.4MB in the beginning and 35.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:23:24,394 INFO L158 Benchmark]: Boogie Preprocessor took 50.20ms. Allocated memory is still 62.9MB. Free memory was 35.3MB in the beginning and 34.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:23:24,394 INFO L158 Benchmark]: RCFGBuilder took 314.59ms. Allocated memory is still 62.9MB. Free memory was 33.7MB in the beginning and 40.5MB in the end (delta: -6.7MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-08-29 22:23:24,394 INFO L158 Benchmark]: TraceAbstraction took 5519.33ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 39.9MB in the beginning and 82.7MB in the end (delta: -42.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 22:23:24,394 INFO L158 Benchmark]: Witness Printer took 46.16ms. Allocated memory is still 111.1MB. Free memory was 81.6MB in the beginning and 79.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:23:24,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 50.3MB. Free memory was 32.4MB in the beginning and 32.4MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 514.84ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 25.9MB in the beginning and 37.4MB in the end (delta: -11.5MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.97ms. Allocated memory is still 62.9MB. Free memory was 37.4MB in the beginning and 35.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.20ms. Allocated memory is still 62.9MB. Free memory was 35.3MB in the beginning and 34.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 314.59ms. Allocated memory is still 62.9MB. Free memory was 33.7MB in the beginning and 40.5MB in the end (delta: -6.7MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5519.33ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 39.9MB in the beginning and 82.7MB in the end (delta: -42.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Witness Printer took 46.16ms. Allocated memory is still 111.1MB. Free memory was 81.6MB in the beginning and 79.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2909.42ms, 109 PlacesBefore, 39 PlacesAfterwards, 98 TransitionsBefore, 27 TransitionsAfterwards, 2114 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 82 TotalNumberOfCompositions, 3767 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2379, positive: 2284, positive conditional: 0, positive unconditional: 2284, negative: 95, negative conditional: 0, negative unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1544, positive: 1507, positive conditional: 0, positive unconditional: 1507, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1544, positive: 1492, positive conditional: 0, positive unconditional: 1492, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 107, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2379, positive: 777, positive conditional: 0, positive unconditional: 777, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 1544, unknown conditional: 0, unknown unconditional: 1544] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 98, Positive conditional cache size: 0, Positive unconditional cache size: 98, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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 9 procedures, 127 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 5364.57ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 33.95ms, AutomataDifference: 882.01ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 2994.93ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 451 SdHoareTripleChecker+Valid, 403.57ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 451 mSDsluCounter, 706 SdHoareTripleChecker+Invalid, 315.81ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 622 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 542 IncrementalHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 263 mSDtfsCounter, 542 mSolverCounterSat, 13.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 214.33ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=820occurred in iteration=2, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 281.09ms AutomataMinimizationTime, 14 MinimizatonAttempts, 364 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.55ms SsaConstructionTime, 245.42ms SatisfiabilityAnalysisTime, 633.28ms InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 193 ConstructedInterpolants, 0 QuantifiedInterpolants, 878 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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! [2021-08-29 22:23:24,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...