./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe022_tso.i --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_adafa310-b626-4835-8354-2152cdf2c023/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/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_adafa310-b626-4835-8354-2152cdf2c023/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe022_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/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_adafa310-b626-4835-8354-2152cdf2c023/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 cfc87f4ca115dcc389a4b05cbc106fd8bac1a9e17a58d50108d65580024dc2f5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:09:40,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:09:40,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:09:40,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:09:40,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:09:40,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:09:40,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:09:40,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:09:40,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:09:40,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:09:40,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:09:40,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:09:40,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:09:40,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:09:40,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:09:40,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:09:40,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:09:40,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:09:40,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:09:40,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:09:40,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:09:40,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:09:40,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:09:40,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:09:40,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:09:40,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:09:40,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:09:40,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:09:40,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:09:40,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:09:40,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:09:40,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:09:40,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:09:40,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:09:40,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:09:40,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:09:40,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:09:40,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:09:40,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:09:40,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:09:40,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:09:40,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 23:09:40,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:09:40,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:09:40,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:09:40,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:09:40,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:09:40,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:09:40,709 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:09:40,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:09:40,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:09:40,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:09:40,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:09:40,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:09:40,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:09:40,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:09:40,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:09:40,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:09:40,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:09:40,713 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:09:40,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:09:40,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:09:40,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:09:40,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:09:40,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:09:40,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:09:40,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:09:40,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:09:40,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:09:40,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:09:40,716 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:09:40,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:09:40,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:09:40,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:09:40,718 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_adafa310-b626-4835-8354-2152cdf2c023/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfc87f4ca115dcc389a4b05cbc106fd8bac1a9e17a58d50108d65580024dc2f5 [2021-11-02 23:09:41,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:09:41,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:09:41,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:09:41,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:09:41,078 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:09:41,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/pthread-wmm/safe022_tso.i [2021-11-02 23:09:41,158 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/bin/uautomizer-tBqnrhUYjU/data/ec1d5fef7/fd5a9be0e47f482e966dd708af0e0065/FLAG465eef511 [2021-11-02 23:09:41,705 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:09:41,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/sv-benchmarks/c/pthread-wmm/safe022_tso.i [2021-11-02 23:09:41,738 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/bin/uautomizer-tBqnrhUYjU/data/ec1d5fef7/fd5a9be0e47f482e966dd708af0e0065/FLAG465eef511 [2021-11-02 23:09:41,968 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/bin/uautomizer-tBqnrhUYjU/data/ec1d5fef7/fd5a9be0e47f482e966dd708af0e0065 [2021-11-02 23:09:41,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:09:41,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:09:41,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:09:41,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:09:41,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:09:41,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:09:41" (1/1) ... [2021-11-02 23:09:41,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:41, skipping insertion in model container [2021-11-02 23:09:41,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:09:41" (1/1) ... [2021-11-02 23:09:41,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:09:42,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:09:42,253 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_adafa310-b626-4835-8354-2152cdf2c023/sv-benchmarks/c/pthread-wmm/safe022_tso.i[945,958] [2021-11-02 23:09:42,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:09:42,499 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:09:42,514 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_adafa310-b626-4835-8354-2152cdf2c023/sv-benchmarks/c/pthread-wmm/safe022_tso.i[945,958] [2021-11-02 23:09:42,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:09:42,620 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:09:42,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:42 WrapperNode [2021-11-02 23:09:42,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:09:42,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:09:42,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:09:42,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:09:42,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:42" (1/1) ... [2021-11-02 23:09:42,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:42" (1/1) ... [2021-11-02 23:09:42,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:09:42,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:09:42,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:09:42,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:09:42,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:42" (1/1) ... [2021-11-02 23:09:42,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:42" (1/1) ... [2021-11-02 23:09:42,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:42" (1/1) ... [2021-11-02 23:09:42,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:42" (1/1) ... [2021-11-02 23:09:42,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:42" (1/1) ... [2021-11-02 23:09:42,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:42" (1/1) ... [2021-11-02 23:09:42,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:42" (1/1) ... [2021-11-02 23:09:42,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:09:42,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:09:42,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:09:42,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:09:42,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:42" (1/1) ... [2021-11-02 23:09:42,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:09:42,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:09:42,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:09:42,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:09:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 23:09:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-02 23:09:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:09:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:09:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-02 23:09:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-02 23:09:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-02 23:09:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-02 23:09:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:09:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-02 23:09:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:09:42,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:09:42,854 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 23:09:43,229 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:09:43,229 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-02 23:09:43,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:09:43 BoogieIcfgContainer [2021-11-02 23:09:43,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:09:43,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:09:43,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:09:43,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:09:43,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:09:41" (1/3) ... [2021-11-02 23:09:43,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a97b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:09:43, skipping insertion in model container [2021-11-02 23:09:43,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:42" (2/3) ... [2021-11-02 23:09:43,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a97b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:09:43, skipping insertion in model container [2021-11-02 23:09:43,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:09:43" (3/3) ... [2021-11-02 23:09:43,241 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2021-11-02 23:09:43,247 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-02 23:09:43,247 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:09:43,248 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 23:09:43,248 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-02 23:09:43,276 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,277 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,277 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,278 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,278 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,278 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,278 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,279 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,280 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,280 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,281 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,281 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,281 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,281 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,287 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,287 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,287 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,292 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,293 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:09:43,295 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-02 23:09:43,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:09:43,360 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 23:09:43,360 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-02 23:09:43,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2021-11-02 23:09:43,418 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2021-11-02 23:09:43,418 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-02 23:09:43,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-11-02 23:09:43,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 144 flow [2021-11-02 23:09:43,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 116 flow [2021-11-02 23:09:43,474 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2021-11-02 23:09:43,475 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-02 23:09:43,478 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:09:43,479 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] [2021-11-02 23:09:43,479 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 23:09:43,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:09:43,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1345345987, now seen corresponding path program 1 times [2021-11-02 23:09:43,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:09:43,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627984864] [2021-11-02 23:09:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:09:43,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:09:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:09:44,138 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 23:09:44,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:09:44,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627984864] [2021-11-02 23:09:44,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627984864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:09:44,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:09:44,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 23:09:44,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136709660] [2021-11-02 23:09:44,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 23:09:44,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:09:44,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 23:09:44,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:09:44,177 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-11-02 23:09:44,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 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 23:09:44,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:09:44,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-11-02 23:09:44,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:09:44,375 INFO L129 PetriNetUnfolder]: 11/95 cut-off events. [2021-11-02 23:09:44,375 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-02 23:09:44,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 95 events. 11/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 179 event pairs, 5 based on Foata normal form. 5/98 useless extension candidates. Maximal degree in co-relation 111. Up to 18 conditions per place. [2021-11-02 23:09:44,378 INFO L132 encePairwiseOnDemand]: 60/67 looper letters, 8 selfloop transitions, 2 changer transitions 14/67 dead transitions. [2021-11-02 23:09:44,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 186 flow [2021-11-02 23:09:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 23:09:44,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-02 23:09:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 504 transitions. [2021-11-02 23:09:44,396 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.835820895522388 [2021-11-02 23:09:44,396 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 504 transitions. [2021-11-02 23:09:44,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 504 transitions. [2021-11-02 23:09:44,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:09:44,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 504 transitions. [2021-11-02 23:09:44,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 56.0) internal successors, (504), 9 states have internal predecessors, (504), 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 23:09:44,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 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 23:09:44,421 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 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 23:09:44,423 INFO L186 Difference]: Start difference. First operand has 61 places, 55 transitions, 116 flow. Second operand 9 states and 504 transitions. [2021-11-02 23:09:44,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 186 flow [2021-11-02 23:09:44,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-02 23:09:44,431 INFO L242 Difference]: Finished difference. Result has 74 places, 53 transitions, 130 flow [2021-11-02 23:09:44,433 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=130, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2021-11-02 23:09:44,434 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2021-11-02 23:09:44,434 INFO L470 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 130 flow [2021-11-02 23:09:44,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 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 23:09:44,445 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:09:44,446 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] [2021-11-02 23:09:44,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:09:44,446 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 23:09:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:09:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash -197302110, now seen corresponding path program 1 times [2021-11-02 23:09:44,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:09:44,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712449946] [2021-11-02 23:09:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:09:44,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:09:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:09:44,626 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 23:09:44,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:09:44,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712449946] [2021-11-02 23:09:44,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712449946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:09:44,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:09:44,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 23:09:44,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250043352] [2021-11-02 23:09:44,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 23:09:44,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:09:44,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 23:09:44,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:09:44,638 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 67 [2021-11-02 23:09:44,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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 23:09:44,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:09:44,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 67 [2021-11-02 23:09:44,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:09:45,046 INFO L129 PetriNetUnfolder]: 26/136 cut-off events. [2021-11-02 23:09:45,046 INFO L130 PetriNetUnfolder]: For 41/50 co-relation queries the response was YES. [2021-11-02 23:09:45,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 136 events. 26/136 cut-off events. For 41/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 393 event pairs, 0 based on Foata normal form. 4/139 useless extension candidates. Maximal degree in co-relation 230. Up to 28 conditions per place. [2021-11-02 23:09:45,052 INFO L132 encePairwiseOnDemand]: 57/67 looper letters, 13 selfloop transitions, 8 changer transitions 26/88 dead transitions. [2021-11-02 23:09:45,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 88 transitions, 347 flow [2021-11-02 23:09:45,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 23:09:45,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-02 23:09:45,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 918 transitions. [2021-11-02 23:09:45,065 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8059701492537313 [2021-11-02 23:09:45,065 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 918 transitions. [2021-11-02 23:09:45,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 918 transitions. [2021-11-02 23:09:45,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:09:45,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 918 transitions. [2021-11-02 23:09:45,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.0) internal successors, (918), 17 states have internal predecessors, (918), 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 23:09:45,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 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 23:09:45,086 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 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 23:09:45,086 INFO L186 Difference]: Start difference. First operand has 74 places, 53 transitions, 130 flow. Second operand 17 states and 918 transitions. [2021-11-02 23:09:45,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 88 transitions, 347 flow [2021-11-02 23:09:45,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 88 transitions, 285 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-11-02 23:09:45,098 INFO L242 Difference]: Finished difference. Result has 90 places, 57 transitions, 182 flow [2021-11-02 23:09:45,099 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=182, PETRI_PLACES=90, PETRI_TRANSITIONS=57} [2021-11-02 23:09:45,100 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2021-11-02 23:09:45,101 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 57 transitions, 182 flow [2021-11-02 23:09:45,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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 23:09:45,101 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:09:45,102 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] [2021-11-02 23:09:45,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:09:45,103 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 23:09:45,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:09:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1831963794, now seen corresponding path program 1 times [2021-11-02 23:09:45,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:09:45,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872657003] [2021-11-02 23:09:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:09:45,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:09:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:09:45,308 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 23:09:45,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:09:45,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872657003] [2021-11-02 23:09:45,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872657003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:09:45,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:09:45,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 23:09:45,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519779697] [2021-11-02 23:09:45,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 23:09:45,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:09:45,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 23:09:45,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:09:45,319 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 67 [2021-11-02 23:09:45,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 57 transitions, 182 flow. Second operand has 8 states, 8 states have (on average 52.375) internal successors, (419), 8 states have internal predecessors, (419), 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 23:09:45,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:09:45,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 67 [2021-11-02 23:09:45,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:09:45,510 INFO L129 PetriNetUnfolder]: 10/93 cut-off events. [2021-11-02 23:09:45,511 INFO L130 PetriNetUnfolder]: For 127/153 co-relation queries the response was YES. [2021-11-02 23:09:45,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 93 events. 10/93 cut-off events. For 127/153 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 186 event pairs, 5 based on Foata normal form. 4/96 useless extension candidates. Maximal degree in co-relation 204. Up to 18 conditions per place. [2021-11-02 23:09:45,514 INFO L132 encePairwiseOnDemand]: 59/67 looper letters, 8 selfloop transitions, 4 changer transitions 15/68 dead transitions. [2021-11-02 23:09:45,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 68 transitions, 311 flow [2021-11-02 23:09:45,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 23:09:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-02 23:09:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 538 transitions. [2021-11-02 23:09:45,518 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8029850746268656 [2021-11-02 23:09:45,518 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 538 transitions. [2021-11-02 23:09:45,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 538 transitions. [2021-11-02 23:09:45,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:09:45,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 538 transitions. [2021-11-02 23:09:45,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 53.8) internal successors, (538), 10 states have internal predecessors, (538), 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 23:09:45,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 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 23:09:45,525 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 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 23:09:45,525 INFO L186 Difference]: Start difference. First operand has 90 places, 57 transitions, 182 flow. Second operand 10 states and 538 transitions. [2021-11-02 23:09:45,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 68 transitions, 311 flow [2021-11-02 23:09:45,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 255 flow, removed 28 selfloop flow, removed 12 redundant places. [2021-11-02 23:09:45,534 INFO L242 Difference]: Finished difference. Result has 83 places, 53 transitions, 164 flow [2021-11-02 23:09:45,534 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=164, PETRI_PLACES=83, PETRI_TRANSITIONS=53} [2021-11-02 23:09:45,535 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 22 predicate places. [2021-11-02 23:09:45,535 INFO L470 AbstractCegarLoop]: Abstraction has has 83 places, 53 transitions, 164 flow [2021-11-02 23:09:45,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 52.375) internal successors, (419), 8 states have internal predecessors, (419), 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 23:09:45,536 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:09:45,536 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] [2021-11-02 23:09:45,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 23:09:45,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 23:09:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:09:45,537 INFO L85 PathProgramCache]: Analyzing trace with hash 611781843, now seen corresponding path program 1 times [2021-11-02 23:09:45,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:09:45,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799901789] [2021-11-02 23:09:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:09:45,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:09:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:09:45,738 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 23:09:45,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:09:45,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799901789] [2021-11-02 23:09:45,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799901789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:09:45,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:09:45,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 23:09:45,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980503840] [2021-11-02 23:09:45,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:09:45,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:09:45,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:09:45,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:09:45,748 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 67 [2021-11-02 23:09:45,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 53 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 6 states have internal predecessors, (331), 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 23:09:45,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:09:45,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 67 [2021-11-02 23:09:45,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:09:45,895 INFO L129 PetriNetUnfolder]: 24/130 cut-off events. [2021-11-02 23:09:45,896 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2021-11-02 23:09:45,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 130 events. 24/130 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 391 event pairs, 0 based on Foata normal form. 4/132 useless extension candidates. Maximal degree in co-relation 231. Up to 26 conditions per place. [2021-11-02 23:09:45,908 INFO L132 encePairwiseOnDemand]: 59/67 looper letters, 8 selfloop transitions, 5 changer transitions 15/72 dead transitions. [2021-11-02 23:09:45,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 258 flow [2021-11-02 23:09:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 23:09:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-02 23:09:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 516 transitions. [2021-11-02 23:09:45,911 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8557213930348259 [2021-11-02 23:09:45,912 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 516 transitions. [2021-11-02 23:09:45,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 516 transitions. [2021-11-02 23:09:45,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:09:45,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 516 transitions. [2021-11-02 23:09:45,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 57.333333333333336) internal successors, (516), 9 states have internal predecessors, (516), 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 23:09:45,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 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 23:09:45,917 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 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 23:09:45,917 INFO L186 Difference]: Start difference. First operand has 83 places, 53 transitions, 164 flow. Second operand 9 states and 516 transitions. [2021-11-02 23:09:45,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 258 flow [2021-11-02 23:09:45,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 72 transitions, 212 flow, removed 12 selfloop flow, removed 16 redundant places. [2021-11-02 23:09:45,923 INFO L242 Difference]: Finished difference. Result has 74 places, 55 transitions, 162 flow [2021-11-02 23:09:45,923 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2021-11-02 23:09:45,923 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2021-11-02 23:09:45,924 INFO L470 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 162 flow [2021-11-02 23:09:45,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 6 states have internal predecessors, (331), 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 23:09:45,924 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:09:45,925 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] [2021-11-02 23:09:45,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 23:09:45,925 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 23:09:45,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:09:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1117860866, now seen corresponding path program 1 times [2021-11-02 23:09:45,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:09:45,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183433347] [2021-11-02 23:09:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:09:45,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:09:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:09:46,100 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 23:09:46,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:09:46,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183433347] [2021-11-02 23:09:46,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183433347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:09:46,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:09:46,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 23:09:46,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175825784] [2021-11-02 23:09:46,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 23:09:46,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:09:46,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 23:09:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:09:46,106 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 67 [2021-11-02 23:09:46,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 55.142857142857146) internal successors, (386), 7 states have internal predecessors, (386), 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 23:09:46,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:09:46,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 67 [2021-11-02 23:09:46,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:09:46,230 INFO L129 PetriNetUnfolder]: 8/78 cut-off events. [2021-11-02 23:09:46,230 INFO L130 PetriNetUnfolder]: For 69/72 co-relation queries the response was YES. [2021-11-02 23:09:46,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 78 events. 8/78 cut-off events. For 69/72 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 119 event pairs, 0 based on Foata normal form. 6/84 useless extension candidates. Maximal degree in co-relation 165. Up to 17 conditions per place. [2021-11-02 23:09:46,231 INFO L132 encePairwiseOnDemand]: 59/67 looper letters, 4 selfloop transitions, 7 changer transitions 11/66 dead transitions. [2021-11-02 23:09:46,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 271 flow [2021-11-02 23:09:46,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 23:09:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-02 23:09:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 564 transitions. [2021-11-02 23:09:46,235 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8417910447761194 [2021-11-02 23:09:46,235 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 564 transitions. [2021-11-02 23:09:46,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 564 transitions. [2021-11-02 23:09:46,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:09:46,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 564 transitions. [2021-11-02 23:09:46,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 56.4) internal successors, (564), 10 states have internal predecessors, (564), 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 23:09:46,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 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 23:09:46,243 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 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 23:09:46,243 INFO L186 Difference]: Start difference. First operand has 74 places, 55 transitions, 162 flow. Second operand 10 states and 564 transitions. [2021-11-02 23:09:46,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 271 flow [2021-11-02 23:09:46,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 232 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-11-02 23:09:46,252 INFO L242 Difference]: Finished difference. Result has 79 places, 55 transitions, 174 flow [2021-11-02 23:09:46,253 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=79, PETRI_TRANSITIONS=55} [2021-11-02 23:09:46,254 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 18 predicate places. [2021-11-02 23:09:46,254 INFO L470 AbstractCegarLoop]: Abstraction has has 79 places, 55 transitions, 174 flow [2021-11-02 23:09:46,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 55.142857142857146) internal successors, (386), 7 states have internal predecessors, (386), 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 23:09:46,255 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:09:46,255 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] [2021-11-02 23:09:46,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 23:09:46,256 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-02 23:09:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:09:46,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2051133217, now seen corresponding path program 1 times [2021-11-02 23:09:46,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:09:46,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426304754] [2021-11-02 23:09:46,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:09:46,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:09:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:09:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:09:46,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:09:46,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426304754] [2021-11-02 23:09:46,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426304754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:09:46,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:09:46,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 23:09:46,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374473483] [2021-11-02 23:09:46,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 23:09:46,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:09:46,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 23:09:46,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:09:46,408 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-11-02 23:09:46,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 55 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 54.42857142857143) internal successors, (381), 7 states have internal predecessors, (381), 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 23:09:46,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:09:46,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-11-02 23:09:46,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:09:46,502 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2021-11-02 23:09:46,502 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-11-02 23:09:46,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 55 events. 1/55 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2021-11-02 23:09:46,503 INFO L132 encePairwiseOnDemand]: 61/67 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2021-11-02 23:09:46,503 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 53 transitions, 188 flow [2021-11-02 23:09:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:09:46,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-02 23:09:46,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 381 transitions. [2021-11-02 23:09:46,505 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8123667377398721 [2021-11-02 23:09:46,505 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 381 transitions. [2021-11-02 23:09:46,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 381 transitions. [2021-11-02 23:09:46,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:09:46,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 381 transitions. [2021-11-02 23:09:46,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 54.42857142857143) internal successors, (381), 7 states have internal predecessors, (381), 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 23:09:46,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 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 23:09:46,509 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 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 23:09:46,510 INFO L186 Difference]: Start difference. First operand has 79 places, 55 transitions, 174 flow. Second operand 7 states and 381 transitions. [2021-11-02 23:09:46,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 53 transitions, 188 flow [2021-11-02 23:09:46,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 53 transitions, 142 flow, removed 13 selfloop flow, removed 13 redundant places. [2021-11-02 23:09:46,512 INFO L242 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2021-11-02 23:09:46,512 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2021-11-02 23:09:46,513 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2021-11-02 23:09:46,513 INFO L470 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2021-11-02 23:09:46,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.42857142857143) internal successors, (381), 7 states have internal predecessors, (381), 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 23:09:46,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 23:09:46,517 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-02 23:09:46,517 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-02 23:09:46,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 23:09:46,521 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-02 23:09:46,523 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-02 23:09:46,524 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 23:09:46,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:09:46 BasicIcfg [2021-11-02 23:09:46,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 23:09:46,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 23:09:46,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 23:09:46,527 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 23:09:46,528 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:09:43" (3/4) ... [2021-11-02 23:09:46,531 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 23:09:46,538 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-11-02 23:09:46,538 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-11-02 23:09:46,543 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-02 23:09:46,543 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-02 23:09:46,543 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 23:09:46,544 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 23:09:46,593 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 23:09:46,593 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 23:09:46,603 INFO L168 Benchmark]: Toolchain (without parser) took 4619.47 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 63.3 MB in the beginning and 100.4 MB in the end (delta: -37.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:09:46,604 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory was 81.0 MB in the beginning and 80.9 MB in the end (delta: 60.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:09:46,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.93 ms. Allocated memory is still 100.7 MB. Free memory was 63.2 MB in the beginning and 66.1 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 23:09:46,607 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.92 ms. Allocated memory is still 100.7 MB. Free memory was 65.8 MB in the beginning and 64.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:09:46,607 INFO L168 Benchmark]: Boogie Preprocessor took 49.14 ms. Allocated memory is still 100.7 MB. Free memory was 64.0 MB in the beginning and 62.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:09:46,608 INFO L168 Benchmark]: RCFGBuilder took 487.58 ms. Allocated memory is still 100.7 MB. Free memory was 62.7 MB in the beginning and 51.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 23:09:46,610 INFO L168 Benchmark]: TraceAbstraction took 3292.99 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 50.8 MB in the beginning and 102.5 MB in the end (delta: -51.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:09:46,610 INFO L168 Benchmark]: Witness Printer took 66.13 ms. Allocated memory is still 134.2 MB. Free memory was 102.5 MB in the beginning and 100.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:09:46,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory was 81.0 MB in the beginning and 80.9 MB in the end (delta: 60.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 643.93 ms. Allocated memory is still 100.7 MB. Free memory was 63.2 MB in the beginning and 66.1 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.92 ms. Allocated memory is still 100.7 MB. Free memory was 65.8 MB in the beginning and 64.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.14 ms. Allocated memory is still 100.7 MB. Free memory was 64.0 MB in the beginning and 62.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 487.58 ms. Allocated memory is still 100.7 MB. Free memory was 62.7 MB in the beginning and 51.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3292.99 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 50.8 MB in the beginning and 102.5 MB in the end (delta: -51.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 66.13 ms. Allocated memory is still 134.2 MB. Free memory was 102.5 MB in the beginning and 100.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: 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: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 82 locations, 3 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: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 150 SDslu, 184 SDs, 0 SdLazy, 191 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182occurred in iteration=2, InterpolantAutomatonStates: 62, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 264 ConstructedInterpolants, 0 QuantifiedInterpolants, 936 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-02 23:09:46,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adafa310-b626-4835-8354-2152cdf2c023/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