./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU --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 a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:41:27,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:41:27,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:41:27,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:41:27,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:41:27,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:41:27,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:41:27,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:41:27,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:41:27,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:41:27,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:41:27,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:41:27,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:41:27,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:41:27,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:41:27,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:41:27,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:41:27,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:41:27,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:41:27,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:41:27,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:41:27,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:41:27,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:41:27,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:41:27,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:41:27,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:41:27,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:41:27,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:41:27,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:41:27,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:41:27,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:41:27,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:41:27,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:41:27,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:41:27,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:41:27,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:41:27,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:41:27,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:41:27,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:41:27,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:41:27,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:41:27,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:41:27,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:41:27,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:41:27,582 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:41:27,582 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:41:27,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:41:27,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:41:27,591 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:41:27,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:41:27,591 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:41:27,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:41:27,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:41:27,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:41:27,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:41:27,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:41:27,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:41:27,594 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:41:27,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:41:27,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:41:27,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:41:27,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:41:27,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:41:27,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:41:27,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:41:27,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:41:27,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:41:27,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:41:27,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:41:27,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:41:27,597 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:41:27,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:41:27,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:41:27,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:41:27,598 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_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 [2021-11-02 22:41:27,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:41:27,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:41:27,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:41:27,954 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:41:27,955 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:41:27,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2021-11-02 22:41:28,046 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/data/c0d2260a5/42d8dee9759b4e2c86fcee4cb7301b41/FLAG04a3576dd [2021-11-02 22:41:28,496 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:41:28,496 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2021-11-02 22:41:28,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/data/c0d2260a5/42d8dee9759b4e2c86fcee4cb7301b41/FLAG04a3576dd [2021-11-02 22:41:28,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/data/c0d2260a5/42d8dee9759b4e2c86fcee4cb7301b41 [2021-11-02 22:41:28,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:41:28,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:41:28,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:41:28,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:41:28,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:41:28,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:41:28" (1/1) ... [2021-11-02 22:41:28,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c04c56e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:28, skipping insertion in model container [2021-11-02 22:41:28,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:41:28" (1/1) ... [2021-11-02 22:41:28,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:41:28,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:41:29,164 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2553,2566] [2021-11-02 22:41:29,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:41:29,181 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:41:29,204 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2553,2566] [2021-11-02 22:41:29,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:41:29,223 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:41:29,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:29 WrapperNode [2021-11-02 22:41:29,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:41:29,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:41:29,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:41:29,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:41:29,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:29" (1/1) ... [2021-11-02 22:41:29,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:29" (1/1) ... [2021-11-02 22:41:29,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:41:29,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:41:29,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:41:29,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:41:29,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:29" (1/1) ... [2021-11-02 22:41:29,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:29" (1/1) ... [2021-11-02 22:41:29,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:29" (1/1) ... [2021-11-02 22:41:29,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:29" (1/1) ... [2021-11-02 22:41:29,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:29" (1/1) ... [2021-11-02 22:41:29,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:29" (1/1) ... [2021-11-02 22:41:29,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:29" (1/1) ... [2021-11-02 22:41:29,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:41:29,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:41:29,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:41:29,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:41:29,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:29" (1/1) ... [2021-11-02 22:41:29,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:41:29,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:29,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:41:29,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:41:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-02 22:41:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-02 22:41:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-02 22:41:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-02 22:41:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-02 22:41:29,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-02 22:41:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:41:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:41:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:41:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-02 22:41:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-02 22:41:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:41:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:41:29,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:41:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:41:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:41:29,384 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-02 22:41:29,946 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:41:29,946 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-02 22:41:29,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:41:29 BoogieIcfgContainer [2021-11-02 22:41:29,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:41:29,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:41:29,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:41:29,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:41:29,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:41:28" (1/3) ... [2021-11-02 22:41:29,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c689dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:41:29, skipping insertion in model container [2021-11-02 22:41:29,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:41:29" (2/3) ... [2021-11-02 22:41:29,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c689dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:41:29, skipping insertion in model container [2021-11-02 22:41:29,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:41:29" (3/3) ... [2021-11-02 22:41:29,960 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2021-11-02 22:41:29,965 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-02 22:41:29,966 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:41:29,966 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 22:41:29,966 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-02 22:41:29,999 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,000 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,000 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,000 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,000 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,001 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,001 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,002 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,002 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,002 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,002 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,003 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,003 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,003 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,003 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,003 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,004 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,004 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,004 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,004 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,004 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,004 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,005 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,005 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,005 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,006 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,006 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,006 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,006 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,006 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,007 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,007 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,007 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,007 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,007 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,008 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,008 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,008 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,008 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,008 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,009 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,009 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,009 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,009 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,009 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,010 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,010 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,010 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,010 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,010 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,011 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,011 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,011 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,011 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,012 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,012 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,012 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,012 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,012 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,013 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,013 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,013 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,013 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,013 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,013 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,013 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,014 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,014 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,014 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,014 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,014 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,015 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,015 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,015 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,015 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,015 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,016 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,016 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,016 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,016 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,016 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,019 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,020 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,020 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,020 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,020 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,020 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,022 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,022 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,022 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,023 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,023 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,023 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,030 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,030 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,030 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,031 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,031 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,031 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:41:30,042 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-02 22:41:30,083 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:41:30,092 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:41:30,092 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-02 22:41:30,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 137 places, 139 transitions, 302 flow [2021-11-02 22:41:30,165 INFO L129 PetriNetUnfolder]: 12/136 cut-off events. [2021-11-02 22:41:30,166 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-02 22:41:30,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 12/136 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 94 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2021-11-02 22:41:30,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 139 transitions, 302 flow [2021-11-02 22:41:30,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 126 transitions, 270 flow [2021-11-02 22:41:30,208 INFO L129 PetriNetUnfolder]: 12/125 cut-off events. [2021-11-02 22:41:30,208 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-02 22:41:30,208 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:41:30,209 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:41:30,209 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:41:30,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:30,215 INFO L85 PathProgramCache]: Analyzing trace with hash 539620128, now seen corresponding path program 1 times [2021-11-02 22:41:30,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:30,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264985891] [2021-11-02 22:41:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:30,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:41:30,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:30,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264985891] [2021-11-02 22:41:30,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264985891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:41:30,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:41:30,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:41:30,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194836974] [2021-11-02 22:41:30,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:41:30,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:30,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:41:30,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:41:30,578 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 139 [2021-11-02 22:41:30,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 126 transitions, 270 flow. Second operand has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:30,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:41:30,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 139 [2021-11-02 22:41:30,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:41:30,657 INFO L129 PetriNetUnfolder]: 4/118 cut-off events. [2021-11-02 22:41:30,657 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-02 22:41:30,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 118 events. 4/118 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 82 event pairs, 0 based on Foata normal form. 8/118 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2021-11-02 22:41:30,660 INFO L132 encePairwiseOnDemand]: 131/139 looper letters, 0 selfloop transitions, 0 changer transitions 4/118 dead transitions. [2021-11-02 22:41:30,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 118 transitions, 254 flow [2021-11-02 22:41:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:41:30,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-02 22:41:30,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 268 transitions. [2021-11-02 22:41:30,684 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9640287769784173 [2021-11-02 22:41:30,684 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 268 transitions. [2021-11-02 22:41:30,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 268 transitions. [2021-11-02 22:41:30,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:41:30,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 268 transitions. [2021-11-02 22:41:30,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 134.0) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:30,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:30,707 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:30,708 INFO L186 Difference]: Start difference. First operand has 124 places, 126 transitions, 270 flow. Second operand 2 states and 268 transitions. [2021-11-02 22:41:30,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 118 transitions, 254 flow [2021-11-02 22:41:30,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 118 transitions, 242 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-02 22:41:30,722 INFO L242 Difference]: Finished difference. Result has 119 places, 114 transitions, 234 flow [2021-11-02 22:41:30,724 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=234, PETRI_PLACES=119, PETRI_TRANSITIONS=114} [2021-11-02 22:41:30,726 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, -5 predicate places. [2021-11-02 22:41:30,726 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 114 transitions, 234 flow [2021-11-02 22:41:30,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:30,727 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:41:30,727 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:41:30,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:41:30,728 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:41:30,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:30,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1294448729, now seen corresponding path program 1 times [2021-11-02 22:41:30,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:30,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148436022] [2021-11-02 22:41:30,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:30,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:41:31,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:31,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148436022] [2021-11-02 22:41:31,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148436022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:41:31,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:41:31,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:41:31,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035386586] [2021-11-02 22:41:31,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:41:31,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:31,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:41:31,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:41:31,033 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 139 [2021-11-02 22:41:31,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 114 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:31,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:41:31,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 139 [2021-11-02 22:41:31,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:41:31,185 INFO L129 PetriNetUnfolder]: 23/204 cut-off events. [2021-11-02 22:41:31,185 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-02 22:41:31,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 204 events. 23/204 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 448 event pairs, 1 based on Foata normal form. 1/186 useless extension candidates. Maximal degree in co-relation 256. Up to 21 conditions per place. [2021-11-02 22:41:31,189 INFO L132 encePairwiseOnDemand]: 131/139 looper letters, 25 selfloop transitions, 6 changer transitions 3/127 dead transitions. [2021-11-02 22:41:31,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 127 transitions, 328 flow [2021-11-02 22:41:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:41:31,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-02 22:41:31,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 665 transitions. [2021-11-02 22:41:31,194 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7973621103117506 [2021-11-02 22:41:31,194 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 665 transitions. [2021-11-02 22:41:31,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 665 transitions. [2021-11-02 22:41:31,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:41:31,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 665 transitions. [2021-11-02 22:41:31,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:31,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:31,203 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:31,203 INFO L186 Difference]: Start difference. First operand has 119 places, 114 transitions, 234 flow. Second operand 6 states and 665 transitions. [2021-11-02 22:41:31,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 127 transitions, 328 flow [2021-11-02 22:41:31,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 127 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-02 22:41:31,211 INFO L242 Difference]: Finished difference. Result has 123 places, 118 transitions, 270 flow [2021-11-02 22:41:31,212 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=123, PETRI_TRANSITIONS=118} [2021-11-02 22:41:31,213 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, -1 predicate places. [2021-11-02 22:41:31,216 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 118 transitions, 270 flow [2021-11-02 22:41:31,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:31,217 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:41:31,218 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:41:31,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:41:31,218 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:41:31,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:31,222 INFO L85 PathProgramCache]: Analyzing trace with hash -895969044, now seen corresponding path program 1 times [2021-11-02 22:41:31,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:31,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518999159] [2021-11-02 22:41:31,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:31,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:41:31,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:31,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518999159] [2021-11-02 22:41:31,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518999159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:41:31,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:41:31,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:41:31,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392112729] [2021-11-02 22:41:31,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:41:31,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:31,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:41:31,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:41:31,455 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2021-11-02 22:41:31,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 118 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:31,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:41:31,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2021-11-02 22:41:31,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:41:31,674 INFO L129 PetriNetUnfolder]: 107/538 cut-off events. [2021-11-02 22:41:31,674 INFO L130 PetriNetUnfolder]: For 1/4 co-relation queries the response was YES. [2021-11-02 22:41:31,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 538 events. 107/538 cut-off events. For 1/4 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2897 event pairs, 38 based on Foata normal form. 0/443 useless extension candidates. Maximal degree in co-relation 782. Up to 138 conditions per place. [2021-11-02 22:41:31,686 INFO L132 encePairwiseOnDemand]: 130/139 looper letters, 31 selfloop transitions, 8 changer transitions 0/131 dead transitions. [2021-11-02 22:41:31,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 131 transitions, 375 flow [2021-11-02 22:41:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:41:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-02 22:41:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 886 transitions. [2021-11-02 22:41:31,690 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7967625899280576 [2021-11-02 22:41:31,690 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 886 transitions. [2021-11-02 22:41:31,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 886 transitions. [2021-11-02 22:41:31,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:41:31,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 886 transitions. [2021-11-02 22:41:31,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.75) internal successors, (886), 8 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:31,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:31,699 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:31,699 INFO L186 Difference]: Start difference. First operand has 123 places, 118 transitions, 270 flow. Second operand 8 states and 886 transitions. [2021-11-02 22:41:31,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 131 transitions, 375 flow [2021-11-02 22:41:31,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 131 transitions, 371 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-11-02 22:41:31,708 INFO L242 Difference]: Finished difference. Result has 129 places, 121 transitions, 302 flow [2021-11-02 22:41:31,708 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=302, PETRI_PLACES=129, PETRI_TRANSITIONS=121} [2021-11-02 22:41:31,709 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 5 predicate places. [2021-11-02 22:41:31,709 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 121 transitions, 302 flow [2021-11-02 22:41:31,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:31,710 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:41:31,710 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:41:31,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:41:31,711 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:41:31,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:31,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1839878012, now seen corresponding path program 1 times [2021-11-02 22:41:31,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:31,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887231192] [2021-11-02 22:41:31,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:31,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:41:31,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:31,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887231192] [2021-11-02 22:41:31,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887231192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:41:31,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:41:31,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 22:41:31,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971050071] [2021-11-02 22:41:31,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:41:31,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:41:31,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:41:31,998 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 139 [2021-11-02 22:41:32,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 121 transitions, 302 flow. Second operand has 10 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:32,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:41:32,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 139 [2021-11-02 22:41:32,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:41:32,538 INFO L129 PetriNetUnfolder]: 425/1172 cut-off events. [2021-11-02 22:41:32,538 INFO L130 PetriNetUnfolder]: For 115/133 co-relation queries the response was YES. [2021-11-02 22:41:32,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 1172 events. 425/1172 cut-off events. For 115/133 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7557 event pairs, 280 based on Foata normal form. 18/1022 useless extension candidates. Maximal degree in co-relation 2079. Up to 548 conditions per place. [2021-11-02 22:41:32,554 INFO L132 encePairwiseOnDemand]: 127/139 looper letters, 56 selfloop transitions, 11 changer transitions 0/143 dead transitions. [2021-11-02 22:41:32,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 483 flow [2021-11-02 22:41:32,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:41:32,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-02 22:41:32,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 991 transitions. [2021-11-02 22:41:32,559 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6481360366252452 [2021-11-02 22:41:32,560 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 991 transitions. [2021-11-02 22:41:32,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 991 transitions. [2021-11-02 22:41:32,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:41:32,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 991 transitions. [2021-11-02 22:41:32,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 90.0909090909091) internal successors, (991), 11 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:32,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 139.0) internal successors, (1668), 12 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:32,569 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 139.0) internal successors, (1668), 12 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:32,569 INFO L186 Difference]: Start difference. First operand has 129 places, 121 transitions, 302 flow. Second operand 11 states and 991 transitions. [2021-11-02 22:41:32,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 483 flow [2021-11-02 22:41:32,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 143 transitions, 473 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-02 22:41:32,575 INFO L242 Difference]: Finished difference. Result has 140 places, 125 transitions, 341 flow [2021-11-02 22:41:32,576 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=341, PETRI_PLACES=140, PETRI_TRANSITIONS=125} [2021-11-02 22:41:32,576 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 16 predicate places. [2021-11-02 22:41:32,577 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 125 transitions, 341 flow [2021-11-02 22:41:32,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:32,578 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:41:32,578 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:41:32,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:41:32,578 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:41:32,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:32,579 INFO L85 PathProgramCache]: Analyzing trace with hash 853986174, now seen corresponding path program 1 times [2021-11-02 22:41:32,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:32,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933455471] [2021-11-02 22:41:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:32,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:41:32,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:32,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933455471] [2021-11-02 22:41:32,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933455471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:41:32,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:41:32,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 22:41:32,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499951843] [2021-11-02 22:41:32,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:41:32,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:32,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:41:32,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:41:32,726 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 139 [2021-11-02 22:41:32,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 125 transitions, 341 flow. Second operand has 10 states, 10 states have (on average 88.5) internal successors, (885), 10 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:32,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:41:32,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 139 [2021-11-02 22:41:32,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:41:33,133 INFO L129 PetriNetUnfolder]: 403/944 cut-off events. [2021-11-02 22:41:33,133 INFO L130 PetriNetUnfolder]: For 197/210 co-relation queries the response was YES. [2021-11-02 22:41:33,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 944 events. 403/944 cut-off events. For 197/210 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5241 event pairs, 202 based on Foata normal form. 13/849 useless extension candidates. Maximal degree in co-relation 1891. Up to 473 conditions per place. [2021-11-02 22:41:33,147 INFO L132 encePairwiseOnDemand]: 126/139 looper letters, 43 selfloop transitions, 7 changer transitions 14/140 dead transitions. [2021-11-02 22:41:33,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 140 transitions, 500 flow [2021-11-02 22:41:33,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:41:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-02 22:41:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1082 transitions. [2021-11-02 22:41:33,152 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6486810551558753 [2021-11-02 22:41:33,152 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1082 transitions. [2021-11-02 22:41:33,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1082 transitions. [2021-11-02 22:41:33,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:41:33,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1082 transitions. [2021-11-02 22:41:33,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 90.16666666666667) internal successors, (1082), 12 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:33,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:33,162 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:33,162 INFO L186 Difference]: Start difference. First operand has 140 places, 125 transitions, 341 flow. Second operand 12 states and 1082 transitions. [2021-11-02 22:41:33,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 140 transitions, 500 flow [2021-11-02 22:41:33,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 140 transitions, 487 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-02 22:41:33,168 INFO L242 Difference]: Finished difference. Result has 148 places, 119 transitions, 308 flow [2021-11-02 22:41:33,169 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=308, PETRI_PLACES=148, PETRI_TRANSITIONS=119} [2021-11-02 22:41:33,169 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 24 predicate places. [2021-11-02 22:41:33,169 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 119 transitions, 308 flow [2021-11-02 22:41:33,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 88.5) internal successors, (885), 10 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:33,170 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:41:33,170 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:41:33,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:41:33,171 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:41:33,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:33,171 INFO L85 PathProgramCache]: Analyzing trace with hash 250117340, now seen corresponding path program 1 times [2021-11-02 22:41:33,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:33,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687733813] [2021-11-02 22:41:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:33,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:41:33,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:33,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687733813] [2021-11-02 22:41:33,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687733813] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:33,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112690664] [2021-11-02 22:41:33,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:33,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:33,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:33,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:41:33,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:41:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:33,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:41:33,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:41:33,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112690664] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:33,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:41:33,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-11-02 22:41:33,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204152481] [2021-11-02 22:41:33,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 22:41:33,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:33,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 22:41:33,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:41:33,904 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 139 [2021-11-02 22:41:33,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 119 transitions, 308 flow. Second operand has 14 states, 14 states have (on average 99.57142857142857) internal successors, (1394), 14 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:33,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:41:33,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 139 [2021-11-02 22:41:33,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:41:34,618 INFO L129 PetriNetUnfolder]: 958/1977 cut-off events. [2021-11-02 22:41:34,619 INFO L130 PetriNetUnfolder]: For 540/540 co-relation queries the response was YES. [2021-11-02 22:41:34,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4386 conditions, 1977 events. 958/1977 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 13657 event pairs, 264 based on Foata normal form. 5/1956 useless extension candidates. Maximal degree in co-relation 4370. Up to 465 conditions per place. [2021-11-02 22:41:34,651 INFO L132 encePairwiseOnDemand]: 127/139 looper letters, 70 selfloop transitions, 19 changer transitions 0/172 dead transitions. [2021-11-02 22:41:34,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 172 transitions, 652 flow [2021-11-02 22:41:34,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:41:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-02 22:41:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1345 transitions. [2021-11-02 22:41:34,657 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7443276148312119 [2021-11-02 22:41:34,657 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1345 transitions. [2021-11-02 22:41:34,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1345 transitions. [2021-11-02 22:41:34,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:41:34,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1345 transitions. [2021-11-02 22:41:34,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.46153846153847) internal successors, (1345), 13 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:34,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:34,668 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:34,668 INFO L186 Difference]: Start difference. First operand has 148 places, 119 transitions, 308 flow. Second operand 13 states and 1345 transitions. [2021-11-02 22:41:34,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 172 transitions, 652 flow [2021-11-02 22:41:34,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 172 transitions, 589 flow, removed 24 selfloop flow, removed 14 redundant places. [2021-11-02 22:41:34,681 INFO L242 Difference]: Finished difference. Result has 139 places, 132 transitions, 376 flow [2021-11-02 22:41:34,681 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=376, PETRI_PLACES=139, PETRI_TRANSITIONS=132} [2021-11-02 22:41:34,682 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 15 predicate places. [2021-11-02 22:41:34,682 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 132 transitions, 376 flow [2021-11-02 22:41:34,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 99.57142857142857) internal successors, (1394), 14 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:34,683 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:41:34,683 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:41:34,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:41:34,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-02 22:41:34,909 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:41:34,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:34,910 INFO L85 PathProgramCache]: Analyzing trace with hash 901504236, now seen corresponding path program 2 times [2021-11-02 22:41:34,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:34,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019128745] [2021-11-02 22:41:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:34,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:41:35,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:35,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019128745] [2021-11-02 22:41:35,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019128745] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:35,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562817993] [2021-11-02 22:41:35,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:41:35,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:35,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:35,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:41:35,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:41:35,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:41:35,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:41:35,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:41:35,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:41:35,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562817993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:41:35,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:41:35,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-11-02 22:41:35,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23569827] [2021-11-02 22:41:35,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:41:35,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:35,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:41:35,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:41:35,671 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 139 [2021-11-02 22:41:35,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 132 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 98.5) internal successors, (591), 6 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:35,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:41:35,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 139 [2021-11-02 22:41:35,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:41:36,048 INFO L129 PetriNetUnfolder]: 529/1297 cut-off events. [2021-11-02 22:41:36,048 INFO L130 PetriNetUnfolder]: For 460/494 co-relation queries the response was YES. [2021-11-02 22:41:36,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2941 conditions, 1297 events. 529/1297 cut-off events. For 460/494 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8499 event pairs, 149 based on Foata normal form. 46/1166 useless extension candidates. Maximal degree in co-relation 2929. Up to 488 conditions per place. [2021-11-02 22:41:36,066 INFO L132 encePairwiseOnDemand]: 130/139 looper letters, 36 selfloop transitions, 14 changer transitions 0/140 dead transitions. [2021-11-02 22:41:36,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 140 transitions, 509 flow [2021-11-02 22:41:36,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:41:36,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-02 22:41:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 790 transitions. [2021-11-02 22:41:36,071 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.710431654676259 [2021-11-02 22:41:36,071 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 790 transitions. [2021-11-02 22:41:36,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 790 transitions. [2021-11-02 22:41:36,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:41:36,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 790 transitions. [2021-11-02 22:41:36,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.75) internal successors, (790), 8 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:36,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:36,079 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:36,079 INFO L186 Difference]: Start difference. First operand has 139 places, 132 transitions, 376 flow. Second operand 8 states and 790 transitions. [2021-11-02 22:41:36,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 140 transitions, 509 flow [2021-11-02 22:41:36,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 140 transitions, 500 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-11-02 22:41:36,086 INFO L242 Difference]: Finished difference. Result has 144 places, 135 transitions, 438 flow [2021-11-02 22:41:36,087 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=438, PETRI_PLACES=144, PETRI_TRANSITIONS=135} [2021-11-02 22:41:36,088 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 20 predicate places. [2021-11-02 22:41:36,088 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 135 transitions, 438 flow [2021-11-02 22:41:36,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.5) internal successors, (591), 6 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:36,089 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:41:36,089 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:41:36,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:41:36,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:36,305 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:41:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:36,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1834311650, now seen corresponding path program 1 times [2021-11-02 22:41:36,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:36,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366031864] [2021-11-02 22:41:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:36,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:36,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:41:36,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:36,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366031864] [2021-11-02 22:41:36,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366031864] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:36,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200335277] [2021-11-02 22:41:36,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:36,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:36,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:36,392 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:41:36,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:41:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:36,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:41:36,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:41:36,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200335277] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:36,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:41:36,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-11-02 22:41:36,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346175746] [2021-11-02 22:41:36,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:41:36,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:36,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:41:36,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:41:36,869 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2021-11-02 22:41:36,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 135 transitions, 438 flow. Second operand has 10 states, 10 states have (on average 108.6) internal successors, (1086), 10 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:36,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:41:36,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2021-11-02 22:41:36,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:41:37,082 INFO L129 PetriNetUnfolder]: 160/541 cut-off events. [2021-11-02 22:41:37,082 INFO L130 PetriNetUnfolder]: For 638/693 co-relation queries the response was YES. [2021-11-02 22:41:37,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1336 conditions, 541 events. 160/541 cut-off events. For 638/693 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2763 event pairs, 39 based on Foata normal form. 8/459 useless extension candidates. Maximal degree in co-relation 1322. Up to 135 conditions per place. [2021-11-02 22:41:37,092 INFO L132 encePairwiseOnDemand]: 131/139 looper letters, 40 selfloop transitions, 7 changer transitions 0/148 dead transitions. [2021-11-02 22:41:37,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 148 transitions, 601 flow [2021-11-02 22:41:37,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:41:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-02 22:41:37,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 883 transitions. [2021-11-02 22:41:37,096 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7940647482014388 [2021-11-02 22:41:37,096 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 883 transitions. [2021-11-02 22:41:37,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 883 transitions. [2021-11-02 22:41:37,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:41:37,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 883 transitions. [2021-11-02 22:41:37,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.375) internal successors, (883), 8 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:37,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:37,104 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:37,105 INFO L186 Difference]: Start difference. First operand has 144 places, 135 transitions, 438 flow. Second operand 8 states and 883 transitions. [2021-11-02 22:41:37,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 148 transitions, 601 flow [2021-11-02 22:41:37,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 148 transitions, 576 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-11-02 22:41:37,111 INFO L242 Difference]: Finished difference. Result has 146 places, 136 transitions, 440 flow [2021-11-02 22:41:37,111 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=440, PETRI_PLACES=146, PETRI_TRANSITIONS=136} [2021-11-02 22:41:37,112 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 22 predicate places. [2021-11-02 22:41:37,112 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 136 transitions, 440 flow [2021-11-02 22:41:37,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.6) internal successors, (1086), 10 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:37,113 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:41:37,113 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:41:37,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:41:37,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:37,326 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 22:41:37,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:37,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2022383715, now seen corresponding path program 1 times [2021-11-02 22:41:37,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:37,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72601723] [2021-11-02 22:41:37,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:37,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:41:37,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:37,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72601723] [2021-11-02 22:41:37,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72601723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:41:37,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:41:37,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:41:37,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813819949] [2021-11-02 22:41:37,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:41:37,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:37,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:41:37,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:41:37,429 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 139 [2021-11-02 22:41:37,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 136 transitions, 440 flow. Second operand has 6 states, 6 states have (on average 105.16666666666667) internal successors, (631), 6 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:37,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:41:37,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 139 [2021-11-02 22:41:37,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:41:37,456 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-11-02 22:41:37,456 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-11-02 22:41:37,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 39 events. 0/39 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-11-02 22:41:37,456 INFO L132 encePairwiseOnDemand]: 134/139 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2021-11-02 22:41:37,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 39 transitions, 116 flow [2021-11-02 22:41:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:41:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-02 22:41:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 619 transitions. [2021-11-02 22:41:37,460 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7422062350119905 [2021-11-02 22:41:37,460 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 619 transitions. [2021-11-02 22:41:37,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 619 transitions. [2021-11-02 22:41:37,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:41:37,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 619 transitions. [2021-11-02 22:41:37,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.16666666666667) internal successors, (619), 6 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:37,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:37,466 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:37,466 INFO L186 Difference]: Start difference. First operand has 146 places, 136 transitions, 440 flow. Second operand 6 states and 619 transitions. [2021-11-02 22:41:37,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 39 transitions, 116 flow [2021-11-02 22:41:37,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 39 transitions, 105 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-11-02 22:41:37,467 INFO L242 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2021-11-02 22:41:37,467 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2021-11-02 22:41:37,468 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, -69 predicate places. [2021-11-02 22:41:37,468 INFO L470 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2021-11-02 22:41:37,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.16666666666667) internal successors, (631), 6 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:37,471 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:41:37,471 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-02 22:41:37,472 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-02 22:41:37,472 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-02 22:41:37,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:41:37,477 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:41:37,482 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-02 22:41:37,482 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:41:37,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:41:37 BasicIcfg [2021-11-02 22:41:37,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:41:37,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:41:37,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:41:37,487 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:41:37,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:41:29" (3/4) ... [2021-11-02 22:41:37,490 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 22:41:37,497 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-02 22:41:37,498 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-02 22:41:37,498 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-11-02 22:41:37,508 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-02 22:41:37,509 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-02 22:41:37,509 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:41:37,509 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:41:37,568 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:41:37,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:41:37,570 INFO L168 Benchmark]: Toolchain (without parser) took 8677.24 ms. Allocated memory was 79.7 MB in the beginning and 169.9 MB in the end (delta: 90.2 MB). Free memory was 45.3 MB in the beginning and 64.6 MB in the end (delta: -19.3 MB). Peak memory consumption was 71.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:41:37,570 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory was 52.1 MB in the beginning and 52.0 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:41:37,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.59 ms. Allocated memory was 79.7 MB in the beginning and 113.2 MB in the end (delta: 33.6 MB). Free memory was 45.1 MB in the beginning and 88.1 MB in the end (delta: -42.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:41:37,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.79 ms. Allocated memory is still 113.2 MB. Free memory was 88.1 MB in the beginning and 85.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:41:37,572 INFO L168 Benchmark]: Boogie Preprocessor took 31.53 ms. Allocated memory is still 113.2 MB. Free memory was 85.9 MB in the beginning and 84.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:41:37,572 INFO L168 Benchmark]: RCFGBuilder took 649.58 ms. Allocated memory is still 113.2 MB. Free memory was 84.5 MB in the beginning and 65.6 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-02 22:41:37,573 INFO L168 Benchmark]: TraceAbstraction took 7535.02 ms. Allocated memory was 113.2 MB in the beginning and 169.9 MB in the end (delta: 56.6 MB). Free memory was 65.0 MB in the beginning and 67.8 MB in the end (delta: -2.8 MB). Peak memory consumption was 55.0 MB. Max. memory is 16.1 GB. [2021-11-02 22:41:37,573 INFO L168 Benchmark]: Witness Printer took 81.72 ms. Allocated memory is still 169.9 MB. Free memory was 67.8 MB in the beginning and 64.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:41:37,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory was 52.1 MB in the beginning and 52.0 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.59 ms. Allocated memory was 79.7 MB in the beginning and 113.2 MB in the end (delta: 33.6 MB). Free memory was 45.1 MB in the beginning and 88.1 MB in the end (delta: -42.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.79 ms. Allocated memory is still 113.2 MB. Free memory was 88.1 MB in the beginning and 85.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.53 ms. Allocated memory is still 113.2 MB. Free memory was 85.9 MB in the beginning and 84.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 649.58 ms. Allocated memory is still 113.2 MB. Free memory was 84.5 MB in the beginning and 65.6 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7535.02 ms. Allocated memory was 113.2 MB in the beginning and 169.9 MB in the end (delta: 56.6 MB). Free memory was 65.0 MB in the beginning and 67.8 MB in the end (delta: -2.8 MB). Peak memory consumption was 55.0 MB. Max. memory is 16.1 GB. * Witness Printer took 81.72 ms. Allocated memory is still 169.9 MB. Free memory was 67.8 MB in the beginning and 64.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 100]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 158 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 141 SDtfs, 661 SDslu, 352 SDs, 0 SdLazy, 963 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 423 GetRequests, 318 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=440occurred in iteration=8, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1208 NumberOfCodeBlocks, 1196 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1196 ConstructedInterpolants, 0 QuantifiedInterpolants, 2861 SizeOfPredicates, 15 NumberOfNonLiveVariables, 712 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 13/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-02 22:41:37,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d07fce7-89ca-4f2c-9097-3c450b3f8533/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE