./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt --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 76a5caa3071fd3b7fdb0794a63eaafb12ee9a50e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:03:28,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:03:28,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:03:28,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:03:28,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:03:28,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:03:28,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:03:28,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:03:28,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:03:28,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:03:28,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:03:28,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:03:28,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:03:28,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:03:28,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:03:28,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:03:28,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:03:28,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:03:28,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:03:28,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:03:28,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:03:28,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:03:28,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:03:28,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:03:28,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:03:28,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:03:28,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:03:28,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:03:28,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:03:28,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:03:28,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:03:28,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:03:28,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:03:28,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:03:28,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:03:28,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:03:28,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:03:28,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:03:28,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:03:28,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:03:28,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:03:28,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:03:28,257 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:03:28,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:03:28,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:03:28,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:03:28,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:03:28,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:03:28,263 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:03:28,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:03:28,264 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:03:28,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:03:28,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:03:28,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:03:28,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:03:28,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:03:28,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:03:28,267 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:03:28,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:03:28,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:03:28,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:03:28,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:03:28,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:03:28,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:03:28,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:03:28,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:03:28,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:03:28,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:03:28,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:03:28,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:03:28,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:03:28,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:03:28,272 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76a5caa3071fd3b7fdb0794a63eaafb12ee9a50e [2021-10-13 00:03:28,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:03:28,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:03:28,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:03:28,692 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:03:28,693 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:03:28,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i [2021-10-13 00:03:28,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/data/fbb89916e/2b7a8627055645fc8427aa94fcc88699/FLAG8caeaf72e [2021-10-13 00:03:29,487 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:03:29,503 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i [2021-10-13 00:03:29,521 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/data/fbb89916e/2b7a8627055645fc8427aa94fcc88699/FLAG8caeaf72e [2021-10-13 00:03:29,708 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/data/fbb89916e/2b7a8627055645fc8427aa94fcc88699 [2021-10-13 00:03:29,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:03:29,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:03:29,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:03:29,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:03:29,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:03:29,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:03:29" (1/1) ... [2021-10-13 00:03:29,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70aff367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:29, skipping insertion in model container [2021-10-13 00:03:29,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:03:29" (1/1) ... [2021-10-13 00:03:29,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:03:29,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:03:30,020 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i[950,963] [2021-10-13 00:03:30,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:03:30,258 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:03:30,273 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i[950,963] [2021-10-13 00:03:30,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:03:30,361 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:03:30,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:30 WrapperNode [2021-10-13 00:03:30,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:03:30,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:03:30,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:03:30,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:03:30,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:30" (1/1) ... [2021-10-13 00:03:30,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:30" (1/1) ... [2021-10-13 00:03:30,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:03:30,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:03:30,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:03:30,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:03:30,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:30" (1/1) ... [2021-10-13 00:03:30,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:30" (1/1) ... [2021-10-13 00:03:30,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:30" (1/1) ... [2021-10-13 00:03:30,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:30" (1/1) ... [2021-10-13 00:03:30,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:30" (1/1) ... [2021-10-13 00:03:30,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:30" (1/1) ... [2021-10-13 00:03:30,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:30" (1/1) ... [2021-10-13 00:03:30,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:03:30,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:03:30,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:03:30,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:03:30,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:30" (1/1) ... [2021-10-13 00:03:30,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:03:30,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:03:30,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:03:30,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:03:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:03:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 00:03:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:03:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:03:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 00:03:30,651 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 00:03:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 00:03:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 00:03:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 00:03:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 00:03:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:03:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 00:03:30,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:03:30,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:03:30,655 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 00:03:31,040 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:03:31,040 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 00:03:31,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:03:31 BoogieIcfgContainer [2021-10-13 00:03:31,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:03:31,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:03:31,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:03:31,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:03:31,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:03:29" (1/3) ... [2021-10-13 00:03:31,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbd33ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:03:31, skipping insertion in model container [2021-10-13 00:03:31,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:30" (2/3) ... [2021-10-13 00:03:31,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbd33ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:03:31, skipping insertion in model container [2021-10-13 00:03:31,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:03:31" (3/3) ... [2021-10-13 00:03:31,055 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2021-10-13 00:03:31,061 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 00:03:31,062 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:03:31,062 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:03:31,062 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 00:03:31,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,105 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,105 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,106 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,106 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,109 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,109 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,112 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,113 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,113 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,114 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,114 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,114 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,115 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,115 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,116 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,116 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,120 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,120 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,121 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,121 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,128 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,139 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,139 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,140 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,147 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,148 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,148 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,148 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:03:31,156 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 00:03:31,210 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:03:31,218 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 [2021-10-13 00:03:31,218 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 00:03:31,236 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 00:03:31,250 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-10-13 00:03:31,254 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-10-13 00:03:31,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-10-13 00:03:31,339 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-10-13 00:03:31,340 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 00:03:31,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-13 00:03:31,348 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-10-13 00:03:35,315 INFO L131 LiptonReduction]: Checked pairs total: 2982 [2021-10-13 00:03:35,316 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-10-13 00:03:35,328 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-10-13 00:03:35,363 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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) [2021-10-13 00:03:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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) [2021-10-13 00:03:35,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:03:35,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:03:35,375 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:35,376 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:03:35,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:35,382 INFO L82 PathProgramCache]: Analyzing trace with hash -82956535, now seen corresponding path program 1 times [2021-10-13 00:03:35,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:35,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683120261] [2021-10-13 00:03:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:35,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:35,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:35,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683120261] [2021-10-13 00:03:35,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683120261] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:35,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:35,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 00:03:35,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121578804] [2021-10-13 00:03:35,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:03:35,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:03:35,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:03:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:03:35,906 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-13 00:03:36,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:03:36,009 INFO L93 Difference]: Finished difference Result 347 states and 920 transitions. [2021-10-13 00:03:36,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:03:36,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-13 00:03:36,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:03:36,034 INFO L225 Difference]: With dead ends: 347 [2021-10-13 00:03:36,034 INFO L226 Difference]: Without dead ends: 323 [2021-10-13 00:03:36,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:03:36,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-13 00:03:36,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 288. [2021-10-13 00:03:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 2.7282229965156795) internal successors, (783), 287 states have internal predecessors, (783), 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) [2021-10-13 00:03:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 783 transitions. [2021-10-13 00:03:36,132 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 783 transitions. Word has length 8 [2021-10-13 00:03:36,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:03:36,133 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 783 transitions. [2021-10-13 00:03:36,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-13 00:03:36,134 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 783 transitions. [2021-10-13 00:03:36,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:03:36,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:03:36,137 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:36,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:03:36,138 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:03:36,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:36,139 INFO L82 PathProgramCache]: Analyzing trace with hash 788497753, now seen corresponding path program 1 times [2021-10-13 00:03:36,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:36,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108247216] [2021-10-13 00:03:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:36,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:36,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:36,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108247216] [2021-10-13 00:03:36,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108247216] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:36,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:36,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:03:36,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024019006] [2021-10-13 00:03:36,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:03:36,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:03:36,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:03:36,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:03:36,332 INFO L87 Difference]: Start difference. First operand 288 states and 783 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-13 00:03:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:03:36,382 INFO L93 Difference]: Finished difference Result 304 states and 801 transitions. [2021-10-13 00:03:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:03:36,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-10-13 00:03:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:03:36,391 INFO L225 Difference]: With dead ends: 304 [2021-10-13 00:03:36,392 INFO L226 Difference]: Without dead ends: 304 [2021-10-13 00:03:36,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:03:36,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-13 00:03:36,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 254. [2021-10-13 00:03:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 2.727272727272727) internal successors, (690), 253 states have internal predecessors, (690), 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) [2021-10-13 00:03:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 690 transitions. [2021-10-13 00:03:36,446 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 690 transitions. Word has length 9 [2021-10-13 00:03:36,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:03:36,447 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 690 transitions. [2021-10-13 00:03:36,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-13 00:03:36,448 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 690 transitions. [2021-10-13 00:03:36,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:03:36,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:03:36,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:36,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:03:36,455 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:03:36,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:36,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1723286795, now seen corresponding path program 1 times [2021-10-13 00:03:36,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:36,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539117043] [2021-10-13 00:03:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:36,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:36,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:36,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539117043] [2021-10-13 00:03:36,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539117043] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:36,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:36,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:03:36,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400520986] [2021-10-13 00:03:36,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:03:36,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:03:36,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:03:36,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:03:36,622 INFO L87 Difference]: Start difference. First operand 254 states and 690 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-13 00:03:36,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:03:36,658 INFO L93 Difference]: Finished difference Result 289 states and 752 transitions. [2021-10-13 00:03:36,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:03:36,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-10-13 00:03:36,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:03:36,666 INFO L225 Difference]: With dead ends: 289 [2021-10-13 00:03:36,666 INFO L226 Difference]: Without dead ends: 289 [2021-10-13 00:03:36,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:03:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-13 00:03:36,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 236. [2021-10-13 00:03:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 2.6808510638297873) internal successors, (630), 235 states have internal predecessors, (630), 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) [2021-10-13 00:03:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 630 transitions. [2021-10-13 00:03:36,686 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 630 transitions. Word has length 9 [2021-10-13 00:03:36,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:03:36,687 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 630 transitions. [2021-10-13 00:03:36,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-13 00:03:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 630 transitions. [2021-10-13 00:03:36,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:03:36,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:03:36,700 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:36,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:03:36,701 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:03:36,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:36,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1326401349, now seen corresponding path program 1 times [2021-10-13 00:03:36,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:36,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227163138] [2021-10-13 00:03:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:36,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:36,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:36,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:36,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227163138] [2021-10-13 00:03:36,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227163138] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:36,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:36,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:03:36,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840275896] [2021-10-13 00:03:36,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:03:36,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:03:36,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:03:36,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:03:36,797 INFO L87 Difference]: Start difference. First operand 236 states and 630 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:36,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:03:36,819 INFO L93 Difference]: Finished difference Result 271 states and 701 transitions. [2021-10-13 00:03:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:03:36,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 00:03:36,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:03:36,823 INFO L225 Difference]: With dead ends: 271 [2021-10-13 00:03:36,823 INFO L226 Difference]: Without dead ends: 271 [2021-10-13 00:03:36,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:03:36,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-10-13 00:03:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 215. [2021-10-13 00:03:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.6542056074766354) internal successors, (568), 214 states have internal predecessors, (568), 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) [2021-10-13 00:03:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 568 transitions. [2021-10-13 00:03:36,839 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 568 transitions. Word has length 10 [2021-10-13 00:03:36,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:03:36,840 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 568 transitions. [2021-10-13 00:03:36,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:36,840 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 568 transitions. [2021-10-13 00:03:36,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:03:36,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:03:36,842 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:36,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:03:36,842 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:03:36,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:36,843 INFO L82 PathProgramCache]: Analyzing trace with hash 855965049, now seen corresponding path program 1 times [2021-10-13 00:03:36,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:36,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480600502] [2021-10-13 00:03:36,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:36,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:36,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:36,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:36,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480600502] [2021-10-13 00:03:36,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480600502] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:36,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:36,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:03:36,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879742650] [2021-10-13 00:03:36,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:03:36,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:03:36,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:03:36,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:03:36,948 INFO L87 Difference]: Start difference. First operand 215 states and 568 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:36,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:03:36,967 INFO L93 Difference]: Finished difference Result 206 states and 538 transitions. [2021-10-13 00:03:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:03:36,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 00:03:36,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:03:36,970 INFO L225 Difference]: With dead ends: 206 [2021-10-13 00:03:36,971 INFO L226 Difference]: Without dead ends: 206 [2021-10-13 00:03:36,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:03:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-13 00:03:36,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 188. [2021-10-13 00:03:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.6042780748663104) internal successors, (487), 187 states have internal predecessors, (487), 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) [2021-10-13 00:03:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 487 transitions. [2021-10-13 00:03:36,982 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 487 transitions. Word has length 11 [2021-10-13 00:03:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:03:36,983 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 487 transitions. [2021-10-13 00:03:36,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:36,983 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 487 transitions. [2021-10-13 00:03:36,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:03:36,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:03:36,988 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:36,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:03:36,989 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:03:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:36,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1240802785, now seen corresponding path program 1 times [2021-10-13 00:03:36,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:36,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753371283] [2021-10-13 00:03:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:37,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:37,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:37,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753371283] [2021-10-13 00:03:37,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753371283] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:37,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:37,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:03:37,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320773027] [2021-10-13 00:03:37,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:03:37,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:03:37,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:03:37,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:03:37,123 INFO L87 Difference]: Start difference. First operand 188 states and 487 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:37,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:03:37,148 INFO L93 Difference]: Finished difference Result 230 states and 576 transitions. [2021-10-13 00:03:37,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:03:37,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 00:03:37,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:03:37,150 INFO L225 Difference]: With dead ends: 230 [2021-10-13 00:03:37,150 INFO L226 Difference]: Without dead ends: 104 [2021-10-13 00:03:37,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:03:37,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-13 00:03:37,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-10-13 00:03:37,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.3106796116504853) internal successors, (238), 103 states have internal predecessors, (238), 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) [2021-10-13 00:03:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 238 transitions. [2021-10-13 00:03:37,156 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 238 transitions. Word has length 12 [2021-10-13 00:03:37,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:03:37,157 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 238 transitions. [2021-10-13 00:03:37,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 238 transitions. [2021-10-13 00:03:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:03:37,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:03:37,158 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:37,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:03:37,158 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:03:37,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:37,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2057747285, now seen corresponding path program 1 times [2021-10-13 00:03:37,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:37,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849039138] [2021-10-13 00:03:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:37,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:37,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:37,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849039138] [2021-10-13 00:03:37,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849039138] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:37,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:37,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:03:37,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83328394] [2021-10-13 00:03:37,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:03:37,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:03:37,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:03:37,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:03:37,254 INFO L87 Difference]: Start difference. First operand 104 states and 238 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:37,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:03:37,293 INFO L93 Difference]: Finished difference Result 127 states and 266 transitions. [2021-10-13 00:03:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:03:37,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 00:03:37,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:03:37,295 INFO L225 Difference]: With dead ends: 127 [2021-10-13 00:03:37,295 INFO L226 Difference]: Without dead ends: 87 [2021-10-13 00:03:37,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:03:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-13 00:03:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-10-13 00:03:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.058139534883721) internal successors, (177), 86 states have internal predecessors, (177), 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) [2021-10-13 00:03:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 177 transitions. [2021-10-13 00:03:37,300 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 177 transitions. Word has length 13 [2021-10-13 00:03:37,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:03:37,301 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 177 transitions. [2021-10-13 00:03:37,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:37,301 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 177 transitions. [2021-10-13 00:03:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:03:37,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:03:37,302 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:37,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 00:03:37,303 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:03:37,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:37,303 INFO L82 PathProgramCache]: Analyzing trace with hash -758569011, now seen corresponding path program 1 times [2021-10-13 00:03:37,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:37,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818033519] [2021-10-13 00:03:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:37,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:37,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:37,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818033519] [2021-10-13 00:03:37,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818033519] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:37,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:37,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:03:37,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242609168] [2021-10-13 00:03:37,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:03:37,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:03:37,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:03:37,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:03:37,408 INFO L87 Difference]: Start difference. First operand 87 states and 177 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:37,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:03:37,456 INFO L93 Difference]: Finished difference Result 90 states and 168 transitions. [2021-10-13 00:03:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:03:37,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 00:03:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:03:37,458 INFO L225 Difference]: With dead ends: 90 [2021-10-13 00:03:37,458 INFO L226 Difference]: Without dead ends: 65 [2021-10-13 00:03:37,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:03:37,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-13 00:03:37,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-10-13 00:03:37,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.796875) internal successors, (115), 64 states have internal predecessors, (115), 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) [2021-10-13 00:03:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 115 transitions. [2021-10-13 00:03:37,463 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 115 transitions. Word has length 14 [2021-10-13 00:03:37,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:03:37,463 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 115 transitions. [2021-10-13 00:03:37,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:37,463 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 115 transitions. [2021-10-13 00:03:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:03:37,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:03:37,464 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:37,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 00:03:37,465 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:03:37,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:37,465 INFO L82 PathProgramCache]: Analyzing trace with hash -2040812518, now seen corresponding path program 1 times [2021-10-13 00:03:37,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:37,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99332454] [2021-10-13 00:03:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:37,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:37,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:37,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99332454] [2021-10-13 00:03:37,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99332454] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:37,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:37,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:03:37,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922605305] [2021-10-13 00:03:37,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:03:37,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:03:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:03:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:03:37,594 INFO L87 Difference]: Start difference. First operand 65 states and 115 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:03:37,638 INFO L93 Difference]: Finished difference Result 62 states and 107 transitions. [2021-10-13 00:03:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:03:37,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 00:03:37,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:03:37,640 INFO L225 Difference]: With dead ends: 62 [2021-10-13 00:03:37,640 INFO L226 Difference]: Without dead ends: 38 [2021-10-13 00:03:37,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:03:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-13 00:03:37,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-13 00:03:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 37 states have internal predecessors, (62), 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) [2021-10-13 00:03:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2021-10-13 00:03:37,644 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 15 [2021-10-13 00:03:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:03:37,644 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2021-10-13 00:03:37,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2021-10-13 00:03:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:03:37,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:03:37,645 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:37,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 00:03:37,646 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:03:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:37,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1939817689, now seen corresponding path program 1 times [2021-10-13 00:03:37,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:37,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024317228] [2021-10-13 00:03:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:37,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:37,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:37,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024317228] [2021-10-13 00:03:37,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024317228] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:37,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:37,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:03:37,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947343646] [2021-10-13 00:03:37,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:03:37,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:03:37,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:03:37,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:03:37,732 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:37,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:03:37,757 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2021-10-13 00:03:37,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:03:37,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 00:03:37,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:03:37,759 INFO L225 Difference]: With dead ends: 51 [2021-10-13 00:03:37,759 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 00:03:37,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:03:37,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 00:03:37,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-13 00:03:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 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) [2021-10-13 00:03:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-10-13 00:03:37,762 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2021-10-13 00:03:37,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:03:37,762 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-10-13 00:03:37,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:37,763 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2021-10-13 00:03:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:03:37,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:03:37,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:37,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 00:03:37,764 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 00:03:37,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:37,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1865802105, now seen corresponding path program 2 times [2021-10-13 00:03:37,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:37,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649163126] [2021-10-13 00:03:37,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:37,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:37,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:37,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649163126] [2021-10-13 00:03:37,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649163126] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:37,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:37,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:03:37,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872014851] [2021-10-13 00:03:37,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:03:37,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:03:37,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:03:37,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:03:37,845 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:37,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:03:37,860 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2021-10-13 00:03:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:03:37,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 00:03:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:03:37,861 INFO L225 Difference]: With dead ends: 29 [2021-10-13 00:03:37,861 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:03:37,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:03:37,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:03:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:03:37,862 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) [2021-10-13 00:03:37,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:03:37,863 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-13 00:03:37,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:03:37,865 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:03:37,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:03:37,865 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:03:37,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:03:37,868 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:03:37,868 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 00:03:37,869 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 00:03:37,869 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 00:03:37,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 00:03:37,874 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 00:03:37,874 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:03:37,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:03:37 BasicIcfg [2021-10-13 00:03:37,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:03:37,879 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:03:37,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:03:37,879 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:03:37,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:03:31" (3/4) ... [2021-10-13 00:03:37,883 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:03:37,891 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-13 00:03:37,891 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-13 00:03:37,891 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-13 00:03:37,899 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-13 00:03:37,900 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:03:37,900 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:03:37,900 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:03:37,948 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:03:37,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:03:37,951 INFO L168 Benchmark]: Toolchain (without parser) took 8236.84 ms. Allocated memory was 90.2 MB in the beginning and 136.3 MB in the end (delta: 46.1 MB). Free memory was 52.9 MB in the beginning and 48.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 49.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:03:37,951 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 70.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:03:37,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.65 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 52.6 MB in the beginning and 77.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:03:37,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.61 ms. Allocated memory is still 113.2 MB. Free memory was 77.5 MB in the beginning and 75.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:03:37,953 INFO L168 Benchmark]: Boogie Preprocessor took 59.95 ms. Allocated memory is still 113.2 MB. Free memory was 75.4 MB in the beginning and 74.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:03:37,953 INFO L168 Benchmark]: RCFGBuilder took 515.77 ms. Allocated memory is still 113.2 MB. Free memory was 74.4 MB in the beginning and 61.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:03:37,954 INFO L168 Benchmark]: TraceAbstraction took 6832.15 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 61.8 MB in the beginning and 51.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:03:37,954 INFO L168 Benchmark]: Witness Printer took 70.15 ms. Allocated memory is still 136.3 MB. Free memory was 51.9 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:03:37,956 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 70.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 643.65 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 52.6 MB in the beginning and 77.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.61 ms. Allocated memory is still 113.2 MB. Free memory was 77.5 MB in the beginning and 75.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.95 ms. Allocated memory is still 113.2 MB. Free memory was 75.4 MB in the beginning and 74.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 515.77 ms. Allocated memory is still 113.2 MB. Free memory was 74.4 MB in the beginning and 61.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6832.15 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 61.8 MB in the beginning and 51.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. * Witness Printer took 70.15 ms. Allocated memory is still 136.3 MB. Free memory was 51.9 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4062.0ms, 92 PlacesBefore, 31 PlacesAfterwards, 84 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2982 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1543, positive: 1434, positive conditional: 0, positive unconditional: 1434, negative: 109, negative conditional: 0, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 978, positive: 927, positive conditional: 0, positive unconditional: 927, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 978, positive: 912, positive conditional: 0, positive unconditional: 912, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 66, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 218, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 162, negative conditional: 0, negative unconditional: 162, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1543, positive: 507, positive conditional: 0, positive unconditional: 507, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 978, unknown conditional: 0, unknown unconditional: 978] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - 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: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6665.8ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 32.7ms, AutomataDifference: 543.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4144.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 203 SDtfs, 183 SDslu, 219 SDs, 0 SdLazy, 129 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 172.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 131.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=1, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 192.6ms AutomataMinimizationTime, 11 MinimizatonAttempts, 212 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 46.3ms SsaConstructionTime, 409.9ms SatisfiabilityAnalysisTime, 898.8ms InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 610 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 00:03:38,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ca8361-8c77-4008-98c9-485219789560/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...