./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC --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 10dc657ec2d146eedbc7784e1d498c26d2be3b10 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:32:12,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:32:12,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:32:12,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:32:12,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:32:12,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:32:12,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:32:12,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:32:12,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:32:12,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:32:12,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:32:12,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:32:12,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:32:12,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:32:12,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:32:12,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:32:12,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:32:12,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:32:12,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:32:12,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:32:12,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:32:12,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:32:12,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:32:12,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:32:12,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:32:12,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:32:12,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:32:12,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:32:12,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:32:12,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:32:12,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:32:12,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:32:12,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:32:12,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:32:12,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:32:12,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:32:12,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:32:12,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:32:12,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:32:12,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:32:12,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:32:12,302 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:32:12,330 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:32:12,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:32:12,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:32:12,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:32:12,333 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:32:12,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:32:12,334 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:32:12,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:32:12,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:32:12,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:32:12,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:32:12,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:32:12,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:32:12,336 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:32:12,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:32:12,336 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:32:12,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:32:12,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:32:12,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:32:12,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:32:12,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:32:12,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:32:12,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:32:12,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:32:12,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:32:12,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:32:12,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:32:12,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:32:12,341 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_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10dc657ec2d146eedbc7784e1d498c26d2be3b10 [2021-10-11 00:32:12,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:32:12,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:32:12,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:32:12,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:32:12,684 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:32:12,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i [2021-10-11 00:32:12,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC/data/76c5eb513/dc8fa92e55374e049476c41a18662b47/FLAGa08962d38 [2021-10-11 00:32:13,511 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:32:13,519 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i [2021-10-11 00:32:13,545 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC/data/76c5eb513/dc8fa92e55374e049476c41a18662b47/FLAGa08962d38 [2021-10-11 00:32:13,732 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC/data/76c5eb513/dc8fa92e55374e049476c41a18662b47 [2021-10-11 00:32:13,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:32:13,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:32:13,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:32:13,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:32:13,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:32:13,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:32:13" (1/1) ... [2021-10-11 00:32:13,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5414cbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:13, skipping insertion in model container [2021-10-11 00:32:13,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:32:13" (1/1) ... [2021-10-11 00:32:13,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:32:13,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:32:14,081 WARN L226 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_3f11b30a-9192-483b-9533-83be0c07cbd6/sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i[950,963] [2021-10-11 00:32:14,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:32:14,254 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:32:14,272 WARN L226 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_3f11b30a-9192-483b-9533-83be0c07cbd6/sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i[950,963] [2021-10-11 00:32:14,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:32:14,432 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:32:14,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:14 WrapperNode [2021-10-11 00:32:14,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:32:14,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:32:14,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:32:14,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:32:14,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:14" (1/1) ... [2021-10-11 00:32:14,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:14" (1/1) ... [2021-10-11 00:32:14,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:32:14,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:32:14,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:32:14,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:32:14,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:14" (1/1) ... [2021-10-11 00:32:14,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:14" (1/1) ... [2021-10-11 00:32:14,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:14" (1/1) ... [2021-10-11 00:32:14,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:14" (1/1) ... [2021-10-11 00:32:14,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:14" (1/1) ... [2021-10-11 00:32:14,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:14" (1/1) ... [2021-10-11 00:32:14,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:14" (1/1) ... [2021-10-11 00:32:14,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:32:14,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:32:14,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:32:14,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:32:14,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:14" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:32:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:32:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 00:32:14,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:32:14,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:32:14,699 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 00:32:14,699 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 00:32:14,700 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 00:32:14,700 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 00:32:14,701 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 00:32:14,702 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 00:32:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:32:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 00:32:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:32:14,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:32:14,705 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 00:32:15,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:32:15,289 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 00:32:15,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:32:15 BoogieIcfgContainer [2021-10-11 00:32:15,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:32:15,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:32:15,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:32:15,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:32:15,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:32:13" (1/3) ... [2021-10-11 00:32:15,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a0436a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:32:15, skipping insertion in model container [2021-10-11 00:32:15,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:14" (2/3) ... [2021-10-11 00:32:15,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a0436a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:32:15, skipping insertion in model container [2021-10-11 00:32:15,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:32:15" (3/3) ... [2021-10-11 00:32:15,301 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2021-10-11 00:32:15,317 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 00:32:15,318 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:32:15,322 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:32:15,323 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 00:32:15,364 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,364 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,364 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,365 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,365 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,365 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,366 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,366 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,366 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,367 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,367 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,367 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,368 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,368 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,368 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,368 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,369 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,369 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,369 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,369 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,370 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,370 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,370 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,371 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,371 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,371 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,372 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,372 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,372 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,373 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,374 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,376 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,377 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,377 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,377 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,383 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,384 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,384 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,387 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,387 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,387 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,388 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:32:15,390 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 00:32:15,404 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 00:32:15,428 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:32:15,429 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:32:15,429 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:32:15,429 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:32:15,429 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:32:15,429 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:32:15,429 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:32:15,429 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:32:15,442 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 00:32:15,444 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2021-10-11 00:32:15,447 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2021-10-11 00:32:15,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-10-11 00:32:15,488 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-10-11 00:32:15,488 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 00:32:15,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-10-11 00:32:15,495 INFO L116 LiptonReduction]: Number of co-enabled transitions 1220 [2021-10-11 00:32:18,401 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 00:32:18,684 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 00:32:18,881 INFO L131 LiptonReduction]: Checked pairs total: 2044 [2021-10-11 00:32:18,885 INFO L133 LiptonReduction]: Total number of compositions: 61 [2021-10-11 00:32:18,893 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2021-10-11 00:32:18,931 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 282 states. [2021-10-11 00:32:18,933 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2021-10-11 00:32:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:32:18,941 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:18,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:18,942 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:18,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:18,948 INFO L82 PathProgramCache]: Analyzing trace with hash 622846231, now seen corresponding path program 1 times [2021-10-11 00:32:18,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:18,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360610572] [2021-10-11 00:32:18,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:19,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360610572] [2021-10-11 00:32:19,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:19,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:32:19,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496834356] [2021-10-11 00:32:19,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:32:19,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:19,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:32:19,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:32:19,241 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 2 states. [2021-10-11 00:32:19,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:19,292 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2021-10-11 00:32:19,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:32:19,298 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 00:32:19,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:19,328 INFO L225 Difference]: With dead ends: 282 [2021-10-11 00:32:19,328 INFO L226 Difference]: Without dead ends: 234 [2021-10-11 00:32:19,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:32:19,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-11 00:32:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-10-11 00:32:19,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-10-11 00:32:19,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2021-10-11 00:32:19,434 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2021-10-11 00:32:19,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:19,436 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2021-10-11 00:32:19,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:32:19,436 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2021-10-11 00:32:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:32:19,438 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:19,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:19,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:32:19,439 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:19,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:19,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2128318799, now seen corresponding path program 1 times [2021-10-11 00:32:19,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:19,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172420836] [2021-10-11 00:32:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:19,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172420836] [2021-10-11 00:32:19,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:19,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:32:19,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926602468] [2021-10-11 00:32:19,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:32:19,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:19,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:32:19,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:32:19,610 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand 4 states. [2021-10-11 00:32:19,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:19,669 INFO L93 Difference]: Finished difference Result 402 states and 1050 transitions. [2021-10-11 00:32:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:32:19,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 00:32:19,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:19,674 INFO L225 Difference]: With dead ends: 402 [2021-10-11 00:32:19,674 INFO L226 Difference]: Without dead ends: 308 [2021-10-11 00:32:19,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:19,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-10-11 00:32:19,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 264. [2021-10-11 00:32:19,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2021-10-11 00:32:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 712 transitions. [2021-10-11 00:32:19,698 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 712 transitions. Word has length 9 [2021-10-11 00:32:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:19,698 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 712 transitions. [2021-10-11 00:32:19,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:32:19,698 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 712 transitions. [2021-10-11 00:32:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:32:19,700 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:19,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:19,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:32:19,700 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:19,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:19,701 INFO L82 PathProgramCache]: Analyzing trace with hash 503221834, now seen corresponding path program 1 times [2021-10-11 00:32:19,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:19,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052309652] [2021-10-11 00:32:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:19,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052309652] [2021-10-11 00:32:19,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:19,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:32:19,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215887946] [2021-10-11 00:32:19,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:32:19,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:19,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:32:19,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:19,792 INFO L87 Difference]: Start difference. First operand 264 states and 712 transitions. Second operand 5 states. [2021-10-11 00:32:19,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:19,863 INFO L93 Difference]: Finished difference Result 345 states and 864 transitions. [2021-10-11 00:32:19,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:32:19,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 00:32:19,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:19,867 INFO L225 Difference]: With dead ends: 345 [2021-10-11 00:32:19,868 INFO L226 Difference]: Without dead ends: 278 [2021-10-11 00:32:19,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:32:19,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-11 00:32:19,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 246. [2021-10-11 00:32:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2021-10-11 00:32:19,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 648 transitions. [2021-10-11 00:32:19,890 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 648 transitions. Word has length 10 [2021-10-11 00:32:19,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:19,890 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 648 transitions. [2021-10-11 00:32:19,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:32:19,891 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 648 transitions. [2021-10-11 00:32:19,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:32:19,893 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:19,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:19,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:32:19,893 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:19,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:19,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1553300282, now seen corresponding path program 1 times [2021-10-11 00:32:19,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:19,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759157361] [2021-10-11 00:32:19,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:19,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759157361] [2021-10-11 00:32:19,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:19,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:32:19,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739545349] [2021-10-11 00:32:19,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:32:19,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:19,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:32:19,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:19,991 INFO L87 Difference]: Start difference. First operand 246 states and 648 transitions. Second operand 5 states. [2021-10-11 00:32:20,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:20,048 INFO L93 Difference]: Finished difference Result 298 states and 740 transitions. [2021-10-11 00:32:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:32:20,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 00:32:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:20,052 INFO L225 Difference]: With dead ends: 298 [2021-10-11 00:32:20,052 INFO L226 Difference]: Without dead ends: 254 [2021-10-11 00:32:20,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:32:20,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-10-11 00:32:20,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2021-10-11 00:32:20,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-10-11 00:32:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 576 transitions. [2021-10-11 00:32:20,068 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 576 transitions. Word has length 10 [2021-10-11 00:32:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:20,068 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 576 transitions. [2021-10-11 00:32:20,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:32:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 576 transitions. [2021-10-11 00:32:20,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:32:20,071 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:20,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:20,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:32:20,071 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:20,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:20,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1580065377, now seen corresponding path program 1 times [2021-10-11 00:32:20,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:20,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461866161] [2021-10-11 00:32:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:20,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461866161] [2021-10-11 00:32:20,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:20,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:32:20,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837820686] [2021-10-11 00:32:20,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:32:20,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:20,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:32:20,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:20,146 INFO L87 Difference]: Start difference. First operand 222 states and 576 transitions. Second operand 5 states. [2021-10-11 00:32:20,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:20,189 INFO L93 Difference]: Finished difference Result 266 states and 662 transitions. [2021-10-11 00:32:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:32:20,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 00:32:20,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:20,193 INFO L225 Difference]: With dead ends: 266 [2021-10-11 00:32:20,194 INFO L226 Difference]: Without dead ends: 242 [2021-10-11 00:32:20,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:32:20,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-11 00:32:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 210. [2021-10-11 00:32:20,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-10-11 00:32:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 538 transitions. [2021-10-11 00:32:20,206 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 538 transitions. Word has length 11 [2021-10-11 00:32:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:20,207 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 538 transitions. [2021-10-11 00:32:20,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:32:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 538 transitions. [2021-10-11 00:32:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:32:20,209 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:20,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:20,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:32:20,210 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:20,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:20,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1430850506, now seen corresponding path program 1 times [2021-10-11 00:32:20,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:20,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44853740] [2021-10-11 00:32:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:20,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44853740] [2021-10-11 00:32:20,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:20,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:32:20,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376076196] [2021-10-11 00:32:20,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:32:20,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:20,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:32:20,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:32:20,284 INFO L87 Difference]: Start difference. First operand 210 states and 538 transitions. Second operand 6 states. [2021-10-11 00:32:20,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:20,327 INFO L93 Difference]: Finished difference Result 300 states and 745 transitions. [2021-10-11 00:32:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:32:20,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-10-11 00:32:20,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:20,330 INFO L225 Difference]: With dead ends: 300 [2021-10-11 00:32:20,330 INFO L226 Difference]: Without dead ends: 180 [2021-10-11 00:32:20,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:32:20,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-11 00:32:20,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 156. [2021-10-11 00:32:20,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2021-10-11 00:32:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 390 transitions. [2021-10-11 00:32:20,340 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 390 transitions. Word has length 12 [2021-10-11 00:32:20,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:20,340 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 390 transitions. [2021-10-11 00:32:20,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:32:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 390 transitions. [2021-10-11 00:32:20,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:32:20,342 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:20,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:20,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:32:20,342 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:20,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:20,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1400741867, now seen corresponding path program 1 times [2021-10-11 00:32:20,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:20,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267445161] [2021-10-11 00:32:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:20,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267445161] [2021-10-11 00:32:20,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:20,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:32:20,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882062063] [2021-10-11 00:32:20,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:32:20,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:20,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:32:20,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:20,422 INFO L87 Difference]: Start difference. First operand 156 states and 390 transitions. Second operand 5 states. [2021-10-11 00:32:20,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:20,473 INFO L93 Difference]: Finished difference Result 254 states and 611 transitions. [2021-10-11 00:32:20,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:32:20,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 00:32:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:20,476 INFO L225 Difference]: With dead ends: 254 [2021-10-11 00:32:20,476 INFO L226 Difference]: Without dead ends: 144 [2021-10-11 00:32:20,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:32:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-11 00:32:20,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 120. [2021-10-11 00:32:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-10-11 00:32:20,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 282 transitions. [2021-10-11 00:32:20,484 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 282 transitions. Word has length 12 [2021-10-11 00:32:20,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:20,484 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 282 transitions. [2021-10-11 00:32:20,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:32:20,484 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 282 transitions. [2021-10-11 00:32:20,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:32:20,485 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:20,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:20,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 00:32:20,486 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:20,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:20,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1013965314, now seen corresponding path program 2 times [2021-10-11 00:32:20,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:20,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738826592] [2021-10-11 00:32:20,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:20,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738826592] [2021-10-11 00:32:20,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:20,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:32:20,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801053784] [2021-10-11 00:32:20,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:32:20,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:20,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:32:20,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:20,547 INFO L87 Difference]: Start difference. First operand 120 states and 282 transitions. Second operand 5 states. [2021-10-11 00:32:20,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:20,591 INFO L93 Difference]: Finished difference Result 134 states and 299 transitions. [2021-10-11 00:32:20,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:32:20,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 00:32:20,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:20,602 INFO L225 Difference]: With dead ends: 134 [2021-10-11 00:32:20,602 INFO L226 Difference]: Without dead ends: 56 [2021-10-11 00:32:20,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:32:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-11 00:32:20,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-11 00:32:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-10-11 00:32:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 113 transitions. [2021-10-11 00:32:20,606 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 113 transitions. Word has length 12 [2021-10-11 00:32:20,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:20,606 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 113 transitions. [2021-10-11 00:32:20,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:32:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 113 transitions. [2021-10-11 00:32:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:32:20,607 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:20,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:20,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 00:32:20,608 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:20,608 INFO L82 PathProgramCache]: Analyzing trace with hash 776645246, now seen corresponding path program 1 times [2021-10-11 00:32:20,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:20,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041772774] [2021-10-11 00:32:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:20,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041772774] [2021-10-11 00:32:20,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:20,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:32:20,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604981712] [2021-10-11 00:32:20,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:32:20,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:20,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:32:20,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:32:20,721 INFO L87 Difference]: Start difference. First operand 56 states and 113 transitions. Second operand 4 states. [2021-10-11 00:32:20,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:20,742 INFO L93 Difference]: Finished difference Result 58 states and 102 transitions. [2021-10-11 00:32:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:32:20,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 00:32:20,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:20,743 INFO L225 Difference]: With dead ends: 58 [2021-10-11 00:32:20,743 INFO L226 Difference]: Without dead ends: 45 [2021-10-11 00:32:20,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:20,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-11 00:32:20,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-11 00:32:20,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-10-11 00:32:20,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 78 transitions. [2021-10-11 00:32:20,746 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 78 transitions. Word has length 13 [2021-10-11 00:32:20,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:20,746 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 78 transitions. [2021-10-11 00:32:20,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:32:20,746 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 78 transitions. [2021-10-11 00:32:20,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:32:20,747 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:20,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:20,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 00:32:20,747 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:20,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:20,748 INFO L82 PathProgramCache]: Analyzing trace with hash -809970744, now seen corresponding path program 1 times [2021-10-11 00:32:20,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:20,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475774942] [2021-10-11 00:32:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:20,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475774942] [2021-10-11 00:32:20,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:20,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:32:20,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876300879] [2021-10-11 00:32:20,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:32:20,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:20,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:32:20,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:20,793 INFO L87 Difference]: Start difference. First operand 45 states and 78 transitions. Second operand 5 states. [2021-10-11 00:32:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:20,819 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2021-10-11 00:32:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:32:20,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 00:32:20,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:20,820 INFO L225 Difference]: With dead ends: 35 [2021-10-11 00:32:20,820 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 00:32:20,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:32:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 00:32:20,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-11 00:32:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:32:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2021-10-11 00:32:20,822 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 14 [2021-10-11 00:32:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:20,823 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-10-11 00:32:20,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:32:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2021-10-11 00:32:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:32:20,823 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:20,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:20,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 00:32:20,824 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:20,824 INFO L82 PathProgramCache]: Analyzing trace with hash -145595207, now seen corresponding path program 1 times [2021-10-11 00:32:20,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:20,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423796453] [2021-10-11 00:32:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:20,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423796453] [2021-10-11 00:32:20,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:20,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:32:20,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655789950] [2021-10-11 00:32:20,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:32:20,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:20,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:32:20,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:32:20,874 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 6 states. [2021-10-11 00:32:20,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:20,904 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2021-10-11 00:32:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:32:20,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-10-11 00:32:20,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:20,905 INFO L225 Difference]: With dead ends: 21 [2021-10-11 00:32:20,905 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:32:20,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:32:20,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:32:20,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:32:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:32:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:32:20,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-11 00:32:20,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:20,907 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:32:20,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:32:20,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:32:20,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:32:20,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 00:32:20,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:32:20 BasicIcfg [2021-10-11 00:32:20,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:32:20,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:32:20,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:32:20,912 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:32:20,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:32:15" (3/4) ... [2021-10-11 00:32:20,916 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:32:20,927 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 00:32:20,927 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 00:32:20,927 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 00:32:20,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 00:32:20,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:32:20,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:32:20,934 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:32:21,006 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f11b30a-9192-483b-9533-83be0c07cbd6/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:32:21,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:32:21,011 INFO L168 Benchmark]: Toolchain (without parser) took 7271.73 ms. Allocated memory was 90.2 MB in the beginning and 136.3 MB in the end (delta: 46.1 MB). Free memory was 56.7 MB in the beginning and 41.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 59.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:21,013 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 90.2 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:32:21,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.79 ms. Allocated memory is still 90.2 MB. Free memory was 56.5 MB in the beginning and 45.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:21,016 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.00 ms. Allocated memory is still 90.2 MB. Free memory was 45.9 MB in the beginning and 43.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:21,016 INFO L168 Benchmark]: Boogie Preprocessor took 62.45 ms. Allocated memory is still 90.2 MB. Free memory was 43.9 MB in the beginning and 42.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:32:21,018 INFO L168 Benchmark]: RCFGBuilder took 702.17 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 42.4 MB in the beginning and 75.3 MB in the end (delta: -32.9 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:21,018 INFO L168 Benchmark]: TraceAbstraction took 5618.52 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 74.5 MB in the beginning and 44.3 MB in the end (delta: 30.3 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:21,019 INFO L168 Benchmark]: Witness Printer took 98.06 ms. Allocated memory is still 136.3 MB. Free memory was 44.3 MB in the beginning and 41.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:21,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 90.2 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 693.79 ms. Allocated memory is still 90.2 MB. Free memory was 56.5 MB in the beginning and 45.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.00 ms. Allocated memory is still 90.2 MB. Free memory was 45.9 MB in the beginning and 43.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.45 ms. Allocated memory is still 90.2 MB. Free memory was 43.9 MB in the beginning and 42.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 702.17 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 42.4 MB in the beginning and 75.3 MB in the end (delta: -32.9 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5618.52 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 74.5 MB in the beginning and 44.3 MB in the end (delta: 30.3 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. * Witness Printer took 98.06 ms. Allocated memory is still 136.3 MB. Free memory was 44.3 MB in the beginning and 41.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 799 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 81 PlacesBefore, 31 PlacesAfterwards, 73 TransitionsBefore, 22 TransitionsAfterwards, 1220 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2044 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 236 SDtfs, 261 SDslu, 362 SDs, 0 SdLazy, 136 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 188 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 5242 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...