./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20/simple-array-sum.wvr.c --full-output -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20/simple-array-sum.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1f79095c90328fd0ea6c5d7ba05d768e32089263 -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-05 22:54:49,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-05 22:54:49,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-05 22:54:49,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-05 22:54:49,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-05 22:54:49,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-05 22:54:49,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-05 22:54:49,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-05 22:54:49,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-05 22:54:49,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-05 22:54:49,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-05 22:54:49,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-05 22:54:49,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-05 22:54:49,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-05 22:54:49,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-05 22:54:49,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-05 22:54:49,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-05 22:54:49,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-05 22:54:49,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-05 22:54:49,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-05 22:54:49,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-05 22:54:49,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-05 22:54:49,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-05 22:54:49,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-05 22:54:49,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-05 22:54:49,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-05 22:54:49,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-05 22:54:49,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-05 22:54:49,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-05 22:54:49,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-05 22:54:49,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-05 22:54:49,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-05 22:54:49,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-05 22:54:49,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-05 22:54:49,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-05 22:54:49,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-05 22:54:49,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-05 22:54:49,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-05 22:54:49,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-05 22:54:49,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-05 22:54:49,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-05 22:54:49,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-05 22:54:49,682 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-05 22:54:49,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-05 22:54:49,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-05 22:54:49,683 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-05 22:54:49,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-05 22:54:49,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-05 22:54:49,685 INFO L138 SettingsManager]: * Use SBE=true [2021-10-05 22:54:49,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-05 22:54:49,685 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-05 22:54:49,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-05 22:54:49,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-05 22:54:49,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-05 22:54:49,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-05 22:54:49,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-05 22:54:49,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-05 22:54:49,687 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-05 22:54:49,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-05 22:54:49,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-05 22:54:49,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-05 22:54:49,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-05 22:54:49,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-05 22:54:49,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-05 22:54:49,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 22:54:49,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-05 22:54:49,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-05 22:54:49,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-05 22:54:49,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-05 22:54:49,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-05 22:54:49,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-05 22:54:49,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-05 22:54:49,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f79095c90328fd0ea6c5d7ba05d768e32089263 [2021-10-05 22:54:50,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-05 22:54:50,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-05 22:54:50,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-05 22:54:50,120 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-05 22:54:50,121 INFO L275 PluginConnector]: CDTParser initialized [2021-10-05 22:54:50,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20/simple-array-sum.wvr.c [2021-10-05 22:54:50,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c5b2531d/c44408d120d64704af42199b94df054b/FLAG397931e0f [2021-10-05 22:54:50,877 INFO L306 CDTParser]: Found 1 translation units. [2021-10-05 22:54:50,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/simple-array-sum.wvr.c [2021-10-05 22:54:50,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c5b2531d/c44408d120d64704af42199b94df054b/FLAG397931e0f [2021-10-05 22:54:51,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c5b2531d/c44408d120d64704af42199b94df054b [2021-10-05 22:54:51,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-05 22:54:51,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-05 22:54:51,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-05 22:54:51,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-05 22:54:51,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-05 22:54:51,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:54:51" (1/1) ... [2021-10-05 22:54:51,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3f5afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:54:51, skipping insertion in model container [2021-10-05 22:54:51,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:54:51" (1/1) ... [2021-10-05 22:54:51,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-05 22:54:51,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-05 22:54:51,490 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/simple-array-sum.wvr.c[2136,2149] [2021-10-05 22:54:51,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 22:54:51,510 INFO L203 MainTranslator]: Completed pre-run [2021-10-05 22:54:51,535 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/simple-array-sum.wvr.c[2136,2149] [2021-10-05 22:54:51,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 22:54:51,560 INFO L208 MainTranslator]: Completed translation [2021-10-05 22:54:51,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:54:51 WrapperNode [2021-10-05 22:54:51,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-05 22:54:51,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-05 22:54:51,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-05 22:54:51,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-05 22:54:51,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:54:51" (1/1) ... [2021-10-05 22:54:51,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:54:51" (1/1) ... [2021-10-05 22:54:51,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-05 22:54:51,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-05 22:54:51,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-05 22:54:51,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-05 22:54:51,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:54:51" (1/1) ... [2021-10-05 22:54:51,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:54:51" (1/1) ... [2021-10-05 22:54:51,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:54:51" (1/1) ... [2021-10-05 22:54:51,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:54:51" (1/1) ... [2021-10-05 22:54:51,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:54:51" (1/1) ... [2021-10-05 22:54:51,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:54:51" (1/1) ... [2021-10-05 22:54:51,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:54:51" (1/1) ... [2021-10-05 22:54:51,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-05 22:54:51,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-05 22:54:51,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-05 22:54:51,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-05 22:54:51,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:54:51" (1/1) ... [2021-10-05 22:54:51,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 22:54:51,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:54:51,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-05 22:54:51,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-05 22:54:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-05 22:54:51,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-05 22:54:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-05 22:54:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-05 22:54:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-05 22:54:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-05 22:54:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-05 22:54:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-05 22:54:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-05 22:54:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-05 22:54:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-05 22:54:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-05 22:54:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-05 22:54:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-05 22:54:51,786 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-05 22:54:52,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-05 22:54:52,262 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-05 22:54:52,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:54:52 BoogieIcfgContainer [2021-10-05 22:54:52,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-05 22:54:52,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-05 22:54:52,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-05 22:54:52,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-05 22:54:52,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:54:51" (1/3) ... [2021-10-05 22:54:52,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158a42aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:54:52, skipping insertion in model container [2021-10-05 22:54:52,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:54:51" (2/3) ... [2021-10-05 22:54:52,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158a42aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:54:52, skipping insertion in model container [2021-10-05 22:54:52,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:54:52" (3/3) ... [2021-10-05 22:54:52,277 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-array-sum.wvr.c [2021-10-05 22:54:52,285 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-05 22:54:52,285 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-05 22:54:52,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-05 22:54:52,286 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-05 22:54:52,324 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,325 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,325 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,326 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,326 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,326 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,327 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,327 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,327 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,327 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,328 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,328 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,328 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,329 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,329 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,329 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,329 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,330 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,331 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,331 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,331 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,331 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,332 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,332 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,333 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,333 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,333 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,333 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,339 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,340 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,341 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,341 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,341 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,342 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,343 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,343 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,343 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,344 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,344 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,344 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,344 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,345 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,345 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,345 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,345 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,346 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,346 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,347 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,347 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,347 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,347 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,348 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,348 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,348 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,349 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,349 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,349 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,349 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,350 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,350 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,351 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,351 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,351 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,351 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,352 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,352 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,352 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,353 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,353 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,353 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,353 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,354 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,354 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,354 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,358 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,359 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,359 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,359 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,359 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,364 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,364 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,364 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,365 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,365 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,367 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,368 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,368 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,368 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,369 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 22:54:52,378 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-05 22:54:52,449 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-05 22:54:52,461 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-05 22:54:52,470 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-05 22:54:52,515 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-05 22:54:52,542 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 155 transitions, 334 flow [2021-10-05 22:54:52,547 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 155 transitions, 334 flow [2021-10-05 22:54:52,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 151 places, 155 transitions, 334 flow [2021-10-05 22:54:52,667 INFO L129 PetriNetUnfolder]: 14/152 cut-off events. [2021-10-05 22:54:52,667 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-05 22:54:52,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 152 events. 14/152 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 116. Up to 3 conditions per place. [2021-10-05 22:54:52,678 INFO L116 LiptonReduction]: Number of co-enabled transitions 1714 [2021-10-05 22:54:58,783 INFO L131 LiptonReduction]: Checked pairs total: 2477 [2021-10-05 22:54:58,784 INFO L133 LiptonReduction]: Total number of compositions: 142 [2021-10-05 22:54:58,793 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 34 transitions, 92 flow [2021-10-05 22:54:58,824 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 210 states, 209 states have (on average 3.38755980861244) internal successors, (708), 209 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:54:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 210 states, 209 states have (on average 3.38755980861244) internal successors, (708), 209 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:54:58,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-05 22:54:58,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:54:58,845 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:54:58,846 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:54:58,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:54:58,852 INFO L82 PathProgramCache]: Analyzing trace with hash 470800, now seen corresponding path program 1 times [2021-10-05 22:54:58,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:54:58,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228690624] [2021-10-05 22:54:58,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:54:58,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:54:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:54:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:54:59,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:54:59,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228690624] [2021-10-05 22:54:59,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228690624] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 22:54:59,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 22:54:59,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-05 22:54:59,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225172740] [2021-10-05 22:54:59,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 22:54:59,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:54:59,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 22:54:59,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 22:54:59,384 INFO L87 Difference]: Start difference. First operand has 210 states, 209 states have (on average 3.38755980861244) internal successors, (708), 209 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2021-10-05 22:54:59,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:54:59,478 INFO L93 Difference]: Finished difference Result 418 states and 1414 transitions. [2021-10-05 22:54:59,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-05 22:54:59,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 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 [2021-10-05 22:54:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:54:59,500 INFO L225 Difference]: With dead ends: 418 [2021-10-05 22:54:59,501 INFO L226 Difference]: Without dead ends: 395 [2021-10-05 22:54:59,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 22:54:59,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-10-05 22:54:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 353. [2021-10-05 22:54:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 3.4232954545454546) internal successors, (1205), 352 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:54:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1205 transitions. [2021-10-05 22:54:59,588 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1205 transitions. Word has length 21 [2021-10-05 22:54:59,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:54:59,590 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 1205 transitions. [2021-10-05 22:54:59,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 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) [2021-10-05 22:54:59,590 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1205 transitions. [2021-10-05 22:54:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-05 22:54:59,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:54:59,597 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:54:59,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-05 22:54:59,597 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:54:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:54:59,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1959247856, now seen corresponding path program 1 times [2021-10-05 22:54:59,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:54:59,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536313090] [2021-10-05 22:54:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:54:59,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:54:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:54:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:54:59,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:54:59,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536313090] [2021-10-05 22:54:59,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536313090] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 22:54:59,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 22:54:59,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-05 22:54:59,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870328841] [2021-10-05 22:54:59,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-05 22:54:59,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:54:59,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-05 22:54:59,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-05 22:54:59,772 INFO L87 Difference]: Start difference. First operand 353 states and 1205 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:54:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:54:59,905 INFO L93 Difference]: Finished difference Result 831 states and 2700 transitions. [2021-10-05 22:54:59,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-05 22:54:59,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2021-10-05 22:54:59,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:54:59,918 INFO L225 Difference]: With dead ends: 831 [2021-10-05 22:54:59,918 INFO L226 Difference]: Without dead ends: 791 [2021-10-05 22:54:59,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-05 22:54:59,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-10-05 22:54:59,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 439. [2021-10-05 22:54:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 3.365296803652968) internal successors, (1474), 438 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 1474 transitions. [2021-10-05 22:55:00,003 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 1474 transitions. Word has length 22 [2021-10-05 22:55:00,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:00,003 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 1474 transitions. [2021-10-05 22:55:00,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 1474 transitions. [2021-10-05 22:55:00,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-05 22:55:00,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:00,014 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:00,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-05 22:55:00,016 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:00,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:00,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1009111846, now seen corresponding path program 1 times [2021-10-05 22:55:00,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:00,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793857309] [2021-10-05 22:55:00,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:00,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:55:00,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:00,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793857309] [2021-10-05 22:55:00,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793857309] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:00,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765575197] [2021-10-05 22:55:00,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:00,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:00,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:00,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:00,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-05 22:55:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:00,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-05 22:55:00,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:55:00,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765575197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:00,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:00,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-05 22:55:00,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805201143] [2021-10-05 22:55:00,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-05 22:55:00,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:00,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-05 22:55:00,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-05 22:55:00,311 INFO L87 Difference]: Start difference. First operand 439 states and 1474 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:00,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:00,417 INFO L93 Difference]: Finished difference Result 644 states and 2158 transitions. [2021-10-05 22:55:00,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 22:55:00,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-05 22:55:00,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:00,425 INFO L225 Difference]: With dead ends: 644 [2021-10-05 22:55:00,425 INFO L226 Difference]: Without dead ends: 644 [2021-10-05 22:55:00,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-05 22:55:00,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-10-05 22:55:00,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 394. [2021-10-05 22:55:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.3944020356234095) internal successors, (1334), 393 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:00,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1334 transitions. [2021-10-05 22:55:00,483 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1334 transitions. Word has length 22 [2021-10-05 22:55:00,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:00,484 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 1334 transitions. [2021-10-05 22:55:00,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:00,484 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1334 transitions. [2021-10-05 22:55:00,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-05 22:55:00,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:00,486 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:00,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:00,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:00,700 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:00,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:00,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1318645559, now seen corresponding path program 1 times [2021-10-05 22:55:00,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:00,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184814804] [2021-10-05 22:55:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:00,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:55:00,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:00,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184814804] [2021-10-05 22:55:00,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184814804] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 22:55:00,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 22:55:00,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-05 22:55:00,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700199814] [2021-10-05 22:55:00,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 22:55:00,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:00,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 22:55:00,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 22:55:00,758 INFO L87 Difference]: Start difference. First operand 394 states and 1334 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:00,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:00,787 INFO L93 Difference]: Finished difference Result 594 states and 1927 transitions. [2021-10-05 22:55:00,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-05 22:55:00,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-10-05 22:55:00,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:00,792 INFO L225 Difference]: With dead ends: 594 [2021-10-05 22:55:00,793 INFO L226 Difference]: Without dead ends: 568 [2021-10-05 22:55:00,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-05 22:55:00,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-10-05 22:55:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 532. [2021-10-05 22:55:00,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 3.3389830508474576) internal successors, (1773), 531 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1773 transitions. [2021-10-05 22:55:00,817 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1773 transitions. Word has length 23 [2021-10-05 22:55:00,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:00,817 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 1773 transitions. [2021-10-05 22:55:00,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:00,818 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1773 transitions. [2021-10-05 22:55:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-05 22:55:00,820 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:00,820 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:00,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-05 22:55:00,821 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:00,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:00,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1965289749, now seen corresponding path program 1 times [2021-10-05 22:55:00,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:00,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595881792] [2021-10-05 22:55:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:00,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-05 22:55:00,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:00,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595881792] [2021-10-05 22:55:00,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595881792] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:00,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545016797] [2021-10-05 22:55:00,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:00,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:00,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:00,938 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:00,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-05 22:55:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:01,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-05 22:55:01,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-05 22:55:01,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545016797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:01,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:01,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-05 22:55:01,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686016852] [2021-10-05 22:55:01,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-05 22:55:01,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:01,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-05 22:55:01,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-05 22:55:01,126 INFO L87 Difference]: Start difference. First operand 532 states and 1773 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:01,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:01,252 INFO L93 Difference]: Finished difference Result 812 states and 2657 transitions. [2021-10-05 22:55:01,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-05 22:55:01,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 23 [2021-10-05 22:55:01,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:01,259 INFO L225 Difference]: With dead ends: 812 [2021-10-05 22:55:01,259 INFO L226 Difference]: Without dead ends: 662 [2021-10-05 22:55:01,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 54.1ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-05 22:55:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-10-05 22:55:01,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 606. [2021-10-05 22:55:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 3.3636363636363638) internal successors, (2035), 605 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 2035 transitions. [2021-10-05 22:55:01,286 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 2035 transitions. Word has length 23 [2021-10-05 22:55:01,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:01,287 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 2035 transitions. [2021-10-05 22:55:01,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 2035 transitions. [2021-10-05 22:55:01,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-05 22:55:01,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:01,290 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:01,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:01,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:01,504 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:01,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:01,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1150212981, now seen corresponding path program 1 times [2021-10-05 22:55:01,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:01,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223205413] [2021-10-05 22:55:01,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:01,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-05 22:55:01,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:01,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223205413] [2021-10-05 22:55:01,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223205413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:01,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797662958] [2021-10-05 22:55:01,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:01,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:01,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:01,614 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:01,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-05 22:55:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:01,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-05 22:55:01,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-05 22:55:01,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797662958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:01,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:01,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-05 22:55:01,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344377224] [2021-10-05 22:55:01,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-05 22:55:01,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:01,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-05 22:55:01,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-05 22:55:01,816 INFO L87 Difference]: Start difference. First operand 606 states and 2035 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:01,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:01,924 INFO L93 Difference]: Finished difference Result 736 states and 2445 transitions. [2021-10-05 22:55:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-05 22:55:01,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-05 22:55:01,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:01,931 INFO L225 Difference]: With dead ends: 736 [2021-10-05 22:55:01,932 INFO L226 Difference]: Without dead ends: 704 [2021-10-05 22:55:01,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 43.4ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-05 22:55:01,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-10-05 22:55:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 520. [2021-10-05 22:55:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 3.4778420038535645) internal successors, (1805), 519 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:01,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 1805 transitions. [2021-10-05 22:55:01,958 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 1805 transitions. Word has length 24 [2021-10-05 22:55:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:01,959 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 1805 transitions. [2021-10-05 22:55:01,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 1805 transitions. [2021-10-05 22:55:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-05 22:55:01,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:01,962 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:01,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:02,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:02,177 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:02,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:02,178 INFO L82 PathProgramCache]: Analyzing trace with hash -465258631, now seen corresponding path program 1 times [2021-10-05 22:55:02,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:02,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878059880] [2021-10-05 22:55:02,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:02,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 22:55:02,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:02,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878059880] [2021-10-05 22:55:02,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878059880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:02,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112982500] [2021-10-05 22:55:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:02,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:02,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:02,251 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:02,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-05 22:55:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:02,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-05 22:55:02,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-05 22:55:02,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112982500] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 22:55:02,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-05 22:55:02,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2021-10-05 22:55:02,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420722760] [2021-10-05 22:55:02,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-05 22:55:02,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:02,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-05 22:55:02,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-05 22:55:02,462 INFO L87 Difference]: Start difference. First operand 520 states and 1805 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:02,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:02,540 INFO L93 Difference]: Finished difference Result 422 states and 1397 transitions. [2021-10-05 22:55:02,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-05 22:55:02,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-05 22:55:02,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:02,547 INFO L225 Difference]: With dead ends: 422 [2021-10-05 22:55:02,548 INFO L226 Difference]: Without dead ends: 370 [2021-10-05 22:55:02,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-05 22:55:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-10-05 22:55:02,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2021-10-05 22:55:02,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 3.4525745257452574) internal successors, (1274), 369 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1274 transitions. [2021-10-05 22:55:02,590 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1274 transitions. Word has length 26 [2021-10-05 22:55:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:02,591 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 1274 transitions. [2021-10-05 22:55:02,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1274 transitions. [2021-10-05 22:55:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-05 22:55:02,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:02,596 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:02,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:02,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:02,812 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:02,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:02,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1235492800, now seen corresponding path program 1 times [2021-10-05 22:55:02,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:02,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073517362] [2021-10-05 22:55:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:02,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-05 22:55:02,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:02,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073517362] [2021-10-05 22:55:02,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073517362] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:02,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461489588] [2021-10-05 22:55:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:02,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:02,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:02,874 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:02,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-05 22:55:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:02,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-05 22:55:02,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-05 22:55:03,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461489588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:03,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:03,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-05 22:55:03,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350626199] [2021-10-05 22:55:03,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-05 22:55:03,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:03,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-05 22:55:03,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-05 22:55:03,095 INFO L87 Difference]: Start difference. First operand 370 states and 1274 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:03,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:03,178 INFO L93 Difference]: Finished difference Result 596 states and 2034 transitions. [2021-10-05 22:55:03,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-05 22:55:03,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 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 29 [2021-10-05 22:55:03,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:03,184 INFO L225 Difference]: With dead ends: 596 [2021-10-05 22:55:03,184 INFO L226 Difference]: Without dead ends: 572 [2021-10-05 22:55:03,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-05 22:55:03,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-10-05 22:55:03,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 400. [2021-10-05 22:55:03,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.418546365914787) internal successors, (1364), 399 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1364 transitions. [2021-10-05 22:55:03,211 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1364 transitions. Word has length 29 [2021-10-05 22:55:03,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:03,212 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 1364 transitions. [2021-10-05 22:55:03,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1364 transitions. [2021-10-05 22:55:03,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-05 22:55:03,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:03,215 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:03,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:03,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:03,431 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:03,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:03,432 INFO L82 PathProgramCache]: Analyzing trace with hash -878856174, now seen corresponding path program 2 times [2021-10-05 22:55:03,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:03,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383251642] [2021-10-05 22:55:03,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:03,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-05 22:55:03,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:03,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383251642] [2021-10-05 22:55:03,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383251642] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:03,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495031418] [2021-10-05 22:55:03,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-05 22:55:03,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:03,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:03,483 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:03,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-05 22:55:03,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-05 22:55:03,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:55:03,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-05 22:55:03,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-05 22:55:03,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495031418] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:03,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:03,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-05 22:55:03,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129438196] [2021-10-05 22:55:03,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-05 22:55:03,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-05 22:55:03,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-05 22:55:03,707 INFO L87 Difference]: Start difference. First operand 400 states and 1364 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:03,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:03,790 INFO L93 Difference]: Finished difference Result 532 states and 1798 transitions. [2021-10-05 22:55:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-05 22:55:03,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 29 [2021-10-05 22:55:03,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:03,796 INFO L225 Difference]: With dead ends: 532 [2021-10-05 22:55:03,796 INFO L226 Difference]: Without dead ends: 520 [2021-10-05 22:55:03,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-05 22:55:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-10-05 22:55:03,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 400. [2021-10-05 22:55:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.418546365914787) internal successors, (1364), 399 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1364 transitions. [2021-10-05 22:55:03,820 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1364 transitions. Word has length 29 [2021-10-05 22:55:03,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:03,821 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 1364 transitions. [2021-10-05 22:55:03,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:03,821 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1364 transitions. [2021-10-05 22:55:03,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-05 22:55:03,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:03,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:03,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:04,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:04,039 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:04,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:04,039 INFO L82 PathProgramCache]: Analyzing trace with hash 2085781314, now seen corresponding path program 3 times [2021-10-05 22:55:04,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:04,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402547557] [2021-10-05 22:55:04,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:04,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-05 22:55:04,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:04,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402547557] [2021-10-05 22:55:04,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402547557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:04,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038786563] [2021-10-05 22:55:04,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-05 22:55:04,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:04,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:04,085 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:04,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-05 22:55:04,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-05 22:55:04,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:55:04,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-05 22:55:04,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-05 22:55:04,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038786563] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:04,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:04,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-05 22:55:04,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924909122] [2021-10-05 22:55:04,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-05 22:55:04,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:04,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-05 22:55:04,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-05 22:55:04,288 INFO L87 Difference]: Start difference. First operand 400 states and 1364 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:04,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:04,352 INFO L93 Difference]: Finished difference Result 546 states and 1830 transitions. [2021-10-05 22:55:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-05 22:55:04,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 29 [2021-10-05 22:55:04,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:04,359 INFO L225 Difference]: With dead ends: 546 [2021-10-05 22:55:04,359 INFO L226 Difference]: Without dead ends: 514 [2021-10-05 22:55:04,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 27.6ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-05 22:55:04,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-05 22:55:04,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 454. [2021-10-05 22:55:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 3.3951434878587197) internal successors, (1538), 453 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1538 transitions. [2021-10-05 22:55:04,379 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 1538 transitions. Word has length 29 [2021-10-05 22:55:04,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:04,381 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 1538 transitions. [2021-10-05 22:55:04,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:04,381 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1538 transitions. [2021-10-05 22:55:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-05 22:55:04,385 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:04,385 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:04,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:04,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-05 22:55:04,599 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:04,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:04,600 INFO L82 PathProgramCache]: Analyzing trace with hash 229978402, now seen corresponding path program 4 times [2021-10-05 22:55:04,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:04,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877438144] [2021-10-05 22:55:04,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:04,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-05 22:55:04,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:04,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877438144] [2021-10-05 22:55:04,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877438144] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:04,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50236497] [2021-10-05 22:55:04,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-05 22:55:04,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:04,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:04,708 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:04,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-05 22:55:04,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-05 22:55:04,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:55:04,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-05 22:55:04,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-05 22:55:04,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50236497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:04,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:04,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-10-05 22:55:04,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445876227] [2021-10-05 22:55:04,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-05 22:55:04,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:04,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-05 22:55:04,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-05 22:55:04,966 INFO L87 Difference]: Start difference. First operand 454 states and 1538 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:05,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:05,317 INFO L93 Difference]: Finished difference Result 911 states and 2974 transitions. [2021-10-05 22:55:05,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-05 22:55:05,317 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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 32 [2021-10-05 22:55:05,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:05,325 INFO L225 Difference]: With dead ends: 911 [2021-10-05 22:55:05,325 INFO L226 Difference]: Without dead ends: 708 [2021-10-05 22:55:05,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 176.9ms TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2021-10-05 22:55:05,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2021-10-05 22:55:05,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 464. [2021-10-05 22:55:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 3.3779697624190064) internal successors, (1564), 463 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) [2021-10-05 22:55:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1564 transitions. [2021-10-05 22:55:05,351 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1564 transitions. Word has length 32 [2021-10-05 22:55:05,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:05,353 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1564 transitions. [2021-10-05 22:55:05,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:05,354 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1564 transitions. [2021-10-05 22:55:05,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-05 22:55:05,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:05,359 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:05,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:05,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-05 22:55:05,574 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:05,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:05,575 INFO L82 PathProgramCache]: Analyzing trace with hash 529363175, now seen corresponding path program 5 times [2021-10-05 22:55:05,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:05,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415416034] [2021-10-05 22:55:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:05,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-05 22:55:05,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:05,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415416034] [2021-10-05 22:55:05,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415416034] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:05,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692644500] [2021-10-05 22:55:05,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-05 22:55:05,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:05,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:05,684 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:05,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-05 22:55:05,812 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-05 22:55:05,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:55:05,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-05 22:55:05,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-05 22:55:05,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692644500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:05,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:05,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-05 22:55:05,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864557643] [2021-10-05 22:55:05,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-05 22:55:05,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:05,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-05 22:55:05,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-05 22:55:05,948 INFO L87 Difference]: Start difference. First operand 464 states and 1564 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:06,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:06,152 INFO L93 Difference]: Finished difference Result 716 states and 2458 transitions. [2021-10-05 22:55:06,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-05 22:55:06,153 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 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 34 [2021-10-05 22:55:06,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:06,160 INFO L225 Difference]: With dead ends: 716 [2021-10-05 22:55:06,160 INFO L226 Difference]: Without dead ends: 716 [2021-10-05 22:55:06,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-05 22:55:06,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-10-05 22:55:06,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 548. [2021-10-05 22:55:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 3.4040219378427787) internal successors, (1862), 547 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:06,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1862 transitions. [2021-10-05 22:55:06,185 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1862 transitions. Word has length 34 [2021-10-05 22:55:06,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:06,186 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1862 transitions. [2021-10-05 22:55:06,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:06,186 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1862 transitions. [2021-10-05 22:55:06,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-05 22:55:06,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:06,188 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:06,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:06,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:06,401 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:06,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:06,402 INFO L82 PathProgramCache]: Analyzing trace with hash -2056340489, now seen corresponding path program 6 times [2021-10-05 22:55:06,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:06,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917086556] [2021-10-05 22:55:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:06,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-05 22:55:06,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:06,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917086556] [2021-10-05 22:55:06,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917086556] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:06,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908108276] [2021-10-05 22:55:06,475 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-05 22:55:06,475 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:06,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:06,476 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:06,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-05 22:55:06,709 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-05 22:55:06,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:55:06,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-05 22:55:06,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-05 22:55:06,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908108276] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:06,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:06,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-05 22:55:06,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870558802] [2021-10-05 22:55:06,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-05 22:55:06,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:06,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-05 22:55:06,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-05 22:55:06,879 INFO L87 Difference]: Start difference. First operand 548 states and 1862 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:07,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:07,093 INFO L93 Difference]: Finished difference Result 920 states and 3252 transitions. [2021-10-05 22:55:07,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-05 22:55:07,094 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-05 22:55:07,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:07,102 INFO L225 Difference]: With dead ends: 920 [2021-10-05 22:55:07,102 INFO L226 Difference]: Without dead ends: 920 [2021-10-05 22:55:07,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 123.1ms TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-05 22:55:07,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-10-05 22:55:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 648. [2021-10-05 22:55:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 3.474497681607419) internal successors, (2248), 647 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:07,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 2248 transitions. [2021-10-05 22:55:07,132 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 2248 transitions. Word has length 35 [2021-10-05 22:55:07,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:07,132 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 2248 transitions. [2021-10-05 22:55:07,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:07,132 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 2248 transitions. [2021-10-05 22:55:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-05 22:55:07,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:07,135 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:07,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:07,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-05 22:55:07,350 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:07,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:07,351 INFO L82 PathProgramCache]: Analyzing trace with hash 455706096, now seen corresponding path program 7 times [2021-10-05 22:55:07,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:07,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389599650] [2021-10-05 22:55:07,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:07,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-05 22:55:07,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:07,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389599650] [2021-10-05 22:55:07,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389599650] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:07,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465514189] [2021-10-05 22:55:07,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-05 22:55:07,437 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:07,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:07,438 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:07,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-05 22:55:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:07,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-05 22:55:07,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-05 22:55:07,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465514189] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:07,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:07,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-05 22:55:07,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787422652] [2021-10-05 22:55:07,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-05 22:55:07,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-05 22:55:07,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-05 22:55:07,741 INFO L87 Difference]: Start difference. First operand 648 states and 2248 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:07,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:07,884 INFO L93 Difference]: Finished difference Result 1040 states and 3612 transitions. [2021-10-05 22:55:07,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-05 22:55:07,884 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 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 37 [2021-10-05 22:55:07,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:07,893 INFO L225 Difference]: With dead ends: 1040 [2021-10-05 22:55:07,893 INFO L226 Difference]: Without dead ends: 984 [2021-10-05 22:55:07,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-05 22:55:07,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-10-05 22:55:07,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 828. [2021-10-05 22:55:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 3.471584038694075) internal successors, (2871), 827 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 2871 transitions. [2021-10-05 22:55:07,939 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 2871 transitions. Word has length 37 [2021-10-05 22:55:07,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:07,939 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 2871 transitions. [2021-10-05 22:55:07,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:07,940 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 2871 transitions. [2021-10-05 22:55:07,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-05 22:55:07,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:07,944 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:07,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:08,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:08,158 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:08,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:08,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1902201154, now seen corresponding path program 8 times [2021-10-05 22:55:08,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:08,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932565971] [2021-10-05 22:55:08,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:08,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-05 22:55:08,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:08,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932565971] [2021-10-05 22:55:08,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932565971] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:08,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426773968] [2021-10-05 22:55:08,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-05 22:55:08,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:08,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:08,227 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:08,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-05 22:55:08,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-05 22:55:08,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:55:08,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-05 22:55:08,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-05 22:55:08,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426773968] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:08,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:08,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-05 22:55:08,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845572437] [2021-10-05 22:55:08,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-05 22:55:08,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:08,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-05 22:55:08,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-05 22:55:08,567 INFO L87 Difference]: Start difference. First operand 828 states and 2871 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:08,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:08,773 INFO L93 Difference]: Finished difference Result 1278 states and 4422 transitions. [2021-10-05 22:55:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-05 22:55:08,774 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 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 37 [2021-10-05 22:55:08,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:08,786 INFO L225 Difference]: With dead ends: 1278 [2021-10-05 22:55:08,786 INFO L226 Difference]: Without dead ends: 1236 [2021-10-05 22:55:08,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-05 22:55:08,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-10-05 22:55:08,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 792. [2021-10-05 22:55:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 791 states have (on average 3.4740834386852084) internal successors, (2748), 791 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 2748 transitions. [2021-10-05 22:55:08,829 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 2748 transitions. Word has length 37 [2021-10-05 22:55:08,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:08,830 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 2748 transitions. [2021-10-05 22:55:08,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 2748 transitions. [2021-10-05 22:55:08,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-05 22:55:08,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:08,834 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:08,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:09,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-05 22:55:09,048 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:09,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:09,049 INFO L82 PathProgramCache]: Analyzing trace with hash -934344930, now seen corresponding path program 9 times [2021-10-05 22:55:09,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:09,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987114079] [2021-10-05 22:55:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:09,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-05 22:55:09,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:09,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987114079] [2021-10-05 22:55:09,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987114079] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:09,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76140402] [2021-10-05 22:55:09,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-05 22:55:09,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:09,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:09,134 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:09,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-05 22:55:09,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-05 22:55:09,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:55:09,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-05 22:55:09,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-05 22:55:09,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76140402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:09,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:09,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-05 22:55:09,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498536173] [2021-10-05 22:55:09,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-05 22:55:09,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:09,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-05 22:55:09,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-05 22:55:09,501 INFO L87 Difference]: Start difference. First operand 792 states and 2748 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:09,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:09,719 INFO L93 Difference]: Finished difference Result 1386 states and 4827 transitions. [2021-10-05 22:55:09,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-05 22:55:09,719 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 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 37 [2021-10-05 22:55:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:09,733 INFO L225 Difference]: With dead ends: 1386 [2021-10-05 22:55:09,733 INFO L226 Difference]: Without dead ends: 1344 [2021-10-05 22:55:09,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-10-05 22:55:09,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2021-10-05 22:55:09,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 792. [2021-10-05 22:55:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 791 states have (on average 3.4740834386852084) internal successors, (2748), 791 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 2748 transitions. [2021-10-05 22:55:09,768 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 2748 transitions. Word has length 37 [2021-10-05 22:55:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:09,770 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 2748 transitions. [2021-10-05 22:55:09,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 2748 transitions. [2021-10-05 22:55:09,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-05 22:55:09,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:09,774 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:09,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:09,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-05 22:55:09,989 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:09,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:09,990 INFO L82 PathProgramCache]: Analyzing trace with hash 518963790, now seen corresponding path program 10 times [2021-10-05 22:55:09,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:09,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997283194] [2021-10-05 22:55:09,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:09,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-05 22:55:10,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:10,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997283194] [2021-10-05 22:55:10,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997283194] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:10,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950230249] [2021-10-05 22:55:10,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-05 22:55:10,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:10,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:10,050 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:10,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-05 22:55:10,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-05 22:55:10,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:55:10,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-05 22:55:10,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-05 22:55:10,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950230249] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:10,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:10,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-05 22:55:10,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13089856] [2021-10-05 22:55:10,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-05 22:55:10,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-05 22:55:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-05 22:55:10,342 INFO L87 Difference]: Start difference. First operand 792 states and 2748 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:10,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:10,496 INFO L93 Difference]: Finished difference Result 1188 states and 4095 transitions. [2021-10-05 22:55:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-05 22:55:10,496 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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 37 [2021-10-05 22:55:10,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:10,506 INFO L225 Difference]: With dead ends: 1188 [2021-10-05 22:55:10,506 INFO L226 Difference]: Without dead ends: 1122 [2021-10-05 22:55:10,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 88.2ms TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-10-05 22:55:10,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-10-05 22:55:10,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 858. [2021-10-05 22:55:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 3.455075845974329) internal successors, (2961), 857 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:10,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 2961 transitions. [2021-10-05 22:55:10,537 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 2961 transitions. Word has length 37 [2021-10-05 22:55:10,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:10,537 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 2961 transitions. [2021-10-05 22:55:10,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:10,538 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 2961 transitions. [2021-10-05 22:55:10,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-05 22:55:10,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:10,541 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:10,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:10,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-05 22:55:10,755 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:10,756 INFO L82 PathProgramCache]: Analyzing trace with hash -805778812, now seen corresponding path program 11 times [2021-10-05 22:55:10,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:10,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522305282] [2021-10-05 22:55:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:10,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-05 22:55:10,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:10,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522305282] [2021-10-05 22:55:10,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522305282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:10,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235092281] [2021-10-05 22:55:10,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-05 22:55:10,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:10,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:10,848 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:10,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-05 22:55:11,045 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-05 22:55:11,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:55:11,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-05 22:55:11,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-05 22:55:11,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235092281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:11,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:11,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-05 22:55:11,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422703195] [2021-10-05 22:55:11,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-05 22:55:11,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:11,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-05 22:55:11,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-10-05 22:55:11,258 INFO L87 Difference]: Start difference. First operand 858 states and 2961 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:11,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:11,929 INFO L93 Difference]: Finished difference Result 1868 states and 6431 transitions. [2021-10-05 22:55:11,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-05 22:55:11,930 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 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 40 [2021-10-05 22:55:11,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:11,963 INFO L225 Difference]: With dead ends: 1868 [2021-10-05 22:55:11,963 INFO L226 Difference]: Without dead ends: 1474 [2021-10-05 22:55:11,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 296.9ms TimeCoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2021-10-05 22:55:11,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-10-05 22:55:12,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1140. [2021-10-05 22:55:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 3.4995610184372254) internal successors, (3986), 1139 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 3986 transitions. [2021-10-05 22:55:12,013 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 3986 transitions. Word has length 40 [2021-10-05 22:55:12,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:12,013 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 3986 transitions. [2021-10-05 22:55:12,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 3986 transitions. [2021-10-05 22:55:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-05 22:55:12,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:12,018 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:12,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:12,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-05 22:55:12,233 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:12,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:12,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1995955831, now seen corresponding path program 12 times [2021-10-05 22:55:12,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:12,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461442267] [2021-10-05 22:55:12,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:12,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-05 22:55:12,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:12,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461442267] [2021-10-05 22:55:12,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461442267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:12,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634679768] [2021-10-05 22:55:12,359 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-05 22:55:12,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:12,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:12,360 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:12,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-05 22:55:12,617 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-05 22:55:12,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:55:12,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-05 22:55:12,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-05 22:55:12,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634679768] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:12,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:12,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-05 22:55:12,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144533284] [2021-10-05 22:55:12,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-05 22:55:12,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:12,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-05 22:55:12,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-05 22:55:12,832 INFO L87 Difference]: Start difference. First operand 1140 states and 3986 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:13,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:13,009 INFO L93 Difference]: Finished difference Result 1330 states and 4670 transitions. [2021-10-05 22:55:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-05 22:55:13,010 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 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 42 [2021-10-05 22:55:13,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:13,018 INFO L225 Difference]: With dead ends: 1330 [2021-10-05 22:55:13,018 INFO L226 Difference]: Without dead ends: 1330 [2021-10-05 22:55:13,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 156.6ms TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2021-10-05 22:55:13,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-10-05 22:55:13,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2021-10-05 22:55:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1329 states have (on average 3.5139202407825434) internal successors, (4670), 1329 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 4670 transitions. [2021-10-05 22:55:13,062 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 4670 transitions. Word has length 42 [2021-10-05 22:55:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:13,062 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 4670 transitions. [2021-10-05 22:55:13,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 4670 transitions. [2021-10-05 22:55:13,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-05 22:55:13,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:13,068 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:13,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:13,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:13,283 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:13,284 INFO L82 PathProgramCache]: Analyzing trace with hash 194225881, now seen corresponding path program 13 times [2021-10-05 22:55:13,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:13,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914236693] [2021-10-05 22:55:13,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:13,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-05 22:55:13,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:13,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914236693] [2021-10-05 22:55:13,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914236693] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:13,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190575841] [2021-10-05 22:55:13,376 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-05 22:55:13,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:13,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:13,377 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:13,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-05 22:55:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:13,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-05 22:55:13,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-05 22:55:13,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190575841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:13,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:13,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-05 22:55:13,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093616708] [2021-10-05 22:55:13,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-05 22:55:13,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:13,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-05 22:55:13,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-05 22:55:13,846 INFO L87 Difference]: Start difference. First operand 1330 states and 4670 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:14,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:14,050 INFO L93 Difference]: Finished difference Result 1862 states and 6642 transitions. [2021-10-05 22:55:14,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-05 22:55:14,051 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-05 22:55:14,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:14,059 INFO L225 Difference]: With dead ends: 1862 [2021-10-05 22:55:14,059 INFO L226 Difference]: Without dead ends: 1862 [2021-10-05 22:55:14,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-10-05 22:55:14,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2021-10-05 22:55:14,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1162. [2021-10-05 22:55:14,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 3.4900947459086993) internal successors, (4052), 1161 states have internal predecessors, (4052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:14,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 4052 transitions. [2021-10-05 22:55:14,146 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 4052 transitions. Word has length 43 [2021-10-05 22:55:14,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:14,146 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 4052 transitions. [2021-10-05 22:55:14,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:14,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 4052 transitions. [2021-10-05 22:55:14,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-05 22:55:14,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:14,151 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:14,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:14,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:14,368 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:14,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1940916946, now seen corresponding path program 14 times [2021-10-05 22:55:14,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:14,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420402743] [2021-10-05 22:55:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:14,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-05 22:55:14,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:14,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420402743] [2021-10-05 22:55:14,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420402743] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:14,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388590507] [2021-10-05 22:55:14,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-05 22:55:14,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:14,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:14,468 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:14,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-05 22:55:14,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-05 22:55:14,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:55:14,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-05 22:55:14,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:14,922 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-05 22:55:14,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388590507] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:14,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:14,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-05 22:55:14,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175360496] [2021-10-05 22:55:14,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-05 22:55:14,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:14,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-05 22:55:14,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-05 22:55:14,924 INFO L87 Difference]: Start difference. First operand 1162 states and 4052 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:15,210 INFO L93 Difference]: Finished difference Result 1970 states and 6918 transitions. [2021-10-05 22:55:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-05 22:55:15,210 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 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 45 [2021-10-05 22:55:15,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:15,222 INFO L225 Difference]: With dead ends: 1970 [2021-10-05 22:55:15,222 INFO L226 Difference]: Without dead ends: 1890 [2021-10-05 22:55:15,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 203.0ms TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-10-05 22:55:15,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2021-10-05 22:55:15,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1582. [2021-10-05 22:55:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 3.553447185325743) internal successors, (5618), 1581 states have internal predecessors, (5618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 5618 transitions. [2021-10-05 22:55:15,282 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 5618 transitions. Word has length 45 [2021-10-05 22:55:15,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:15,283 INFO L470 AbstractCegarLoop]: Abstraction has 1582 states and 5618 transitions. [2021-10-05 22:55:15,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:15,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 5618 transitions. [2021-10-05 22:55:15,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-05 22:55:15,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 22:55:15,289 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 22:55:15,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:15,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:15,503 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 22:55:15,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 22:55:15,504 INFO L82 PathProgramCache]: Analyzing trace with hash -316561372, now seen corresponding path program 15 times [2021-10-05 22:55:15,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 22:55:15,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128987273] [2021-10-05 22:55:15,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 22:55:15,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 22:55:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 22:55:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-05 22:55:15,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 22:55:15,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128987273] [2021-10-05 22:55:15,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128987273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:15,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081668031] [2021-10-05 22:55:15,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-05 22:55:15,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-05 22:55:15,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 22:55:15,590 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-05 22:55:15,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-05 22:55:15,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-05 22:55:15,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-05 22:55:15,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-05 22:55:15,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-05 22:55:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-05 22:55:16,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081668031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-05 22:55:16,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-05 22:55:16,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2021-10-05 22:55:16,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3902092] [2021-10-05 22:55:16,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-05 22:55:16,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 22:55:16,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-05 22:55:16,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-05 22:55:16,022 INFO L87 Difference]: Start difference. First operand 1582 states and 5618 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:16,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 22:55:16,937 INFO L93 Difference]: Finished difference Result 2556 states and 9226 transitions. [2021-10-05 22:55:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-05 22:55:16,937 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 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 45 [2021-10-05 22:55:16,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 22:55:16,938 INFO L225 Difference]: With dead ends: 2556 [2021-10-05 22:55:16,938 INFO L226 Difference]: Without dead ends: 0 [2021-10-05 22:55:16,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 526.2ms TimeCoverageRelationStatistics Valid=408, Invalid=1398, Unknown=0, NotChecked=0, Total=1806 [2021-10-05 22:55:16,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-05 22:55:16,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-05 22:55:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-05 22:55:16,939 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-10-05 22:55:16,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 22:55:16,939 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-05 22:55:16,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-05 22:55:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-05 22:55:16,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-05 22:55:16,942 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-05 22:55:16,943 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-05 22:55:16,943 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-05 22:55:16,943 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-05 22:55:16,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-05 22:55:17,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-05 22:55:17,162 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-05 22:55:17,162 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-05 22:55:17,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:55:17 BasicIcfg [2021-10-05 22:55:17,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-05 22:55:17,166 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-05 22:55:17,166 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-05 22:55:17,166 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-05 22:55:17,167 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:54:52" (3/4) ... [2021-10-05 22:55:17,170 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-05 22:55:17,177 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-05 22:55:17,177 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-05 22:55:17,177 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-05 22:55:17,187 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-05 22:55:17,188 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-05 22:55:17,188 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-05 22:55:17,188 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-05 22:55:17,263 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-05 22:55:17,263 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-05 22:55:17,265 INFO L168 Benchmark]: Toolchain (without parser) took 26019.05 ms. Allocated memory was 54.5 MB in the beginning and 176.2 MB in the end (delta: 121.6 MB). Free memory was 30.7 MB in the beginning and 53.7 MB in the end (delta: -23.0 MB). Peak memory consumption was 101.7 MB. Max. memory is 16.1 GB. [2021-10-05 22:55:17,266 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 44.0 MB. Free memory was 21.0 MB in the beginning and 20.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-05 22:55:17,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.74 ms. Allocated memory is still 54.5 MB. Free memory was 30.4 MB in the beginning and 32.8 MB in the end (delta: -2.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-05 22:55:17,267 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.45 ms. Allocated memory is still 54.5 MB. Free memory was 32.8 MB in the beginning and 31.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-05 22:55:17,268 INFO L168 Benchmark]: Boogie Preprocessor took 37.29 ms. Allocated memory is still 54.5 MB. Free memory was 31.1 MB in the beginning and 29.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-05 22:55:17,268 INFO L168 Benchmark]: RCFGBuilder took 614.72 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 28.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-05 22:55:17,269 INFO L168 Benchmark]: TraceAbstraction took 24897.05 ms. Allocated memory was 54.5 MB in the beginning and 176.2 MB in the end (delta: 121.6 MB). Free memory was 27.6 MB in the beginning and 57.7 MB in the end (delta: -30.1 MB). Peak memory consumption was 92.0 MB. Max. memory is 16.1 GB. [2021-10-05 22:55:17,269 INFO L168 Benchmark]: Witness Printer took 97.61 ms. Allocated memory is still 176.2 MB. Free memory was 57.7 MB in the beginning and 53.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-05 22:55:17,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 44.0 MB. Free memory was 21.0 MB in the beginning and 20.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.74 ms. Allocated memory is still 54.5 MB. Free memory was 30.4 MB in the beginning and 32.8 MB in the end (delta: -2.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.45 ms. Allocated memory is still 54.5 MB. Free memory was 32.8 MB in the beginning and 31.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.29 ms. Allocated memory is still 54.5 MB. Free memory was 31.1 MB in the beginning and 29.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 614.72 ms. Allocated memory is still 54.5 MB. Free memory was 29.5 MB in the beginning and 28.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24897.05 ms. Allocated memory was 54.5 MB in the beginning and 176.2 MB in the end (delta: 121.6 MB). Free memory was 27.6 MB in the beginning and 57.7 MB in the end (delta: -30.1 MB). Peak memory consumption was 92.0 MB. Max. memory is 16.1 GB. * Witness Printer took 97.61 ms. Allocated memory is still 176.2 MB. Free memory was 57.7 MB in the beginning and 53.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6236.4ms, 151 PlacesBefore, 38 PlacesAfterwards, 155 TransitionsBefore, 34 TransitionsAfterwards, 1714 CoEnabledTransitionPairs, 6 FixpointIterations, 88 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 142 TotalNumberOfCompositions, 2477 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1807, positive: 1730, positive conditional: 0, positive unconditional: 1730, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1050, positive: 1023, positive conditional: 0, positive unconditional: 1023, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1050, positive: 1023, positive conditional: 0, positive unconditional: 1023, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 80, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1807, positive: 707, positive conditional: 0, positive unconditional: 707, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 1050, unknown conditional: 0, unknown unconditional: 1050] , Statistics on independence cache: Total cache size (in pairs): 109, Positive cache size: 99, Positive conditional cache size: 0, Positive unconditional cache size: 99, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 83]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 177 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 24716.4ms, OverallIterations: 22, TraceHistogramMax: 3, EmptinessCheckTime: 102.7ms, AutomataDifference: 4932.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6353.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1117 SDtfs, 2692 SDslu, 4282 SDs, 0 SdLazy, 3443 SolverSat, 267 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2081.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 982 GetRequests, 666 SyntacticMatches, 5 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 2447.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1582occurred in iteration=21, InterpolantAutomatonStates: 253, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 861.6ms AutomataMinimizationTime, 22 MinimizatonAttempts, 4714 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 310.0ms SsaConstructionTime, 1390.7ms SatisfiabilityAnalysisTime, 4204.7ms InterpolantComputationTime, 1358 NumberOfCodeBlocks, 1339 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 1317 ConstructedInterpolants, 0 QuantifiedInterpolants, 3802 SizeOfPredicates, 54 NumberOfNonLiveVariables, 4045 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 41 InterpolantComputations, 4 PerfectInterpolantSequences, 417/602 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-05 22:55:17,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...