./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe005_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe005_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y --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 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:11:41,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:11:41,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:11:41,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:11:41,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:11:41,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:11:41,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:11:41,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:11:41,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:11:41,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:11:41,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:11:41,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:11:41,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:11:41,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:11:41,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:11:41,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:11:41,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:11:41,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:11:41,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:11:41,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:11:41,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:11:41,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:11:41,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:11:41,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:11:41,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:11:41,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:11:41,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:11:41,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:11:41,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:11:41,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:11:41,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:11:41,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:11:41,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:11:41,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:11:41,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:11:41,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:11:41,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:11:41,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:11:41,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:11:41,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:11:41,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:11:41,716 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:11:41,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:11:41,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:11:41,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:11:41,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:11:41,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:11:41,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:11:41,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:11:41,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:11:41,769 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:11:41,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:11:41,770 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:11:41,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:11:41,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:11:41,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:11:41,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:11:41,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:11:41,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:11:41,772 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:11:41,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:11:41,772 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:11:41,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:11:41,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:11:41,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:11:41,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:11:41,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:11:41,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:11:41,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:11:41,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:11:41,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:11:41,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:11:41,776 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:11:41,777 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:11:41,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:11:41,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:11:41,777 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_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce [2021-11-13 18:11:42,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:11:42,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:11:42,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:11:42,086 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:11:42,087 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:11:42,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/pthread-wmm/safe005_tso.i [2021-11-13 18:11:42,160 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/data/536c5c3ce/4652e328f6c14a259e034d07fbd0aadb/FLAGed30e9412 [2021-11-13 18:11:42,772 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:11:42,776 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/sv-benchmarks/c/pthread-wmm/safe005_tso.i [2021-11-13 18:11:42,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/data/536c5c3ce/4652e328f6c14a259e034d07fbd0aadb/FLAGed30e9412 [2021-11-13 18:11:43,025 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/data/536c5c3ce/4652e328f6c14a259e034d07fbd0aadb [2021-11-13 18:11:43,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:11:43,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:11:43,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:11:43,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:11:43,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:11:43,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:11:43" (1/1) ... [2021-11-13 18:11:43,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b6410f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:43, skipping insertion in model container [2021-11-13 18:11:43,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:11:43" (1/1) ... [2021-11-13 18:11:43,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:11:43,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:11:43,313 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_d5c34e73-5bad-4b4d-913d-606ec9d4727f/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2021-11-13 18:11:43,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:11:43,524 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:11:43,535 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_d5c34e73-5bad-4b4d-913d-606ec9d4727f/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2021-11-13 18:11:43,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:11:43,610 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:11:43,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:43 WrapperNode [2021-11-13 18:11:43,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:11:43,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:11:43,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:11:43,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:11:43,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:43" (1/1) ... [2021-11-13 18:11:43,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:43" (1/1) ... [2021-11-13 18:11:43,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:11:43,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:11:43,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:11:43,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:11:43,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:43" (1/1) ... [2021-11-13 18:11:43,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:43" (1/1) ... [2021-11-13 18:11:43,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:43" (1/1) ... [2021-11-13 18:11:43,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:43" (1/1) ... [2021-11-13 18:11:43,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:43" (1/1) ... [2021-11-13 18:11:43,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:43" (1/1) ... [2021-11-13 18:11:43,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:43" (1/1) ... [2021-11-13 18:11:43,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:11:43,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:11:43,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:11:43,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:11:43,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:43" (1/1) ... [2021-11-13 18:11:43,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:11:43,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:11:43,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:11:43,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:11:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:11:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 18:11:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:11:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:11:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-13 18:11:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-13 18:11:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-13 18:11:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-13 18:11:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-13 18:11:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-13 18:11:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:11:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 18:11:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:11:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:11:43,799 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 18:11:44,183 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:11:44,184 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:11:44,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:11:44 BoogieIcfgContainer [2021-11-13 18:11:44,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:11:44,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:11:44,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:11:44,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:11:44,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:11:43" (1/3) ... [2021-11-13 18:11:44,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17720409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:11:44, skipping insertion in model container [2021-11-13 18:11:44,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:11:43" (2/3) ... [2021-11-13 18:11:44,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17720409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:11:44, skipping insertion in model container [2021-11-13 18:11:44,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:11:44" (3/3) ... [2021-11-13 18:11:44,195 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2021-11-13 18:11:44,200 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 18:11:44,201 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:11:44,201 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:11:44,201 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 18:11:44,264 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,264 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,264 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,265 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,265 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,265 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,265 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,266 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,267 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,267 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,267 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,267 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,268 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,268 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,268 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,269 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,269 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,269 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,269 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,270 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,271 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,271 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,271 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,271 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,272 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,272 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,272 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,273 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,273 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,273 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,273 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,274 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,274 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,275 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,275 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,275 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,298 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,299 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,299 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,299 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,302 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,303 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,303 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,303 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,305 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,305 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,305 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,305 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:11:44,307 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 18:11:44,381 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:11:44,395 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 [2021-11-13 18:11:44,395 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-13 18:11:44,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2021-11-13 18:11:44,511 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2021-11-13 18:11:44,511 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:11:44,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-11-13 18:11:44,516 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2021-11-13 18:11:44,521 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2021-11-13 18:11:44,564 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2021-11-13 18:11:44,564 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:11:44,564 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:11:44,565 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:44,566 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:11:44,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:44,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1011825075, now seen corresponding path program 1 times [2021-11-13 18:11:44,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:44,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325731353] [2021-11-13 18:11:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:44,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:45,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:45,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325731353] [2021-11-13 18:11:45,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325731353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:45,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:45,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:11:45,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841221397] [2021-11-13 18:11:45,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:45,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:11:45,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:45,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:11:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:11:45,246 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2021-11-13 18:11:45,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2021-11-13 18:11:45,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:11:45,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2021-11-13 18:11:45,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:11:45,447 INFO L129 PetriNetUnfolder]: 3/90 cut-off events. [2021-11-13 18:11:45,448 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-13 18:11:45,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 90 events. 3/90 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 4/93 useless extension candidates. Maximal degree in co-relation 88. Up to 7 conditions per place. [2021-11-13 18:11:45,451 INFO L132 encePairwiseOnDemand]: 85/92 looper letters, 9 selfloop transitions, 2 changer transitions 11/84 dead transitions. [2021-11-13 18:11:45,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 84 transitions, 219 flow [2021-11-13 18:11:45,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:11:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 18:11:45,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 718 transitions. [2021-11-13 18:11:45,484 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8671497584541062 [2021-11-13 18:11:45,485 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 718 transitions. [2021-11-13 18:11:45,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 718 transitions. [2021-11-13 18:11:45,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:11:45,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 718 transitions. [2021-11-13 18:11:45,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.77777777777777) internal successors, (718), 9 states have internal predecessors, (718), 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) [2021-11-13 18:11:45,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2021-11-13 18:11:45,515 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2021-11-13 18:11:45,517 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 718 transitions. [2021-11-13 18:11:45,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 84 transitions, 219 flow [2021-11-13 18:11:45,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 84 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-13 18:11:45,525 INFO L242 Difference]: Finished difference. Result has 96 places, 73 transitions, 172 flow [2021-11-13 18:11:45,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=172, PETRI_PLACES=96, PETRI_TRANSITIONS=73} [2021-11-13 18:11:45,531 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2021-11-13 18:11:45,531 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 73 transitions, 172 flow [2021-11-13 18:11:45,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2021-11-13 18:11:45,532 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:11:45,532 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:45,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:11:45,533 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:11:45,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:45,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1758137004, now seen corresponding path program 1 times [2021-11-13 18:11:45,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:45,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247083526] [2021-11-13 18:11:45,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:45,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:45,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:45,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247083526] [2021-11-13 18:11:45,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247083526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:45,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:45,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:11:45,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141834457] [2021-11-13 18:11:45,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:45,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:11:45,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:45,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:11:45,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:11:45,712 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2021-11-13 18:11:45,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 73 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2021-11-13 18:11:45,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:11:45,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2021-11-13 18:11:45,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:11:45,855 INFO L129 PetriNetUnfolder]: 3/88 cut-off events. [2021-11-13 18:11:45,855 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-11-13 18:11:45,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 88 events. 3/88 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 2/90 useless extension candidates. Maximal degree in co-relation 130. Up to 7 conditions per place. [2021-11-13 18:11:45,857 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 9 selfloop transitions, 2 changer transitions 10/83 dead transitions. [2021-11-13 18:11:45,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 83 transitions, 252 flow [2021-11-13 18:11:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:11:45,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 18:11:45,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 716 transitions. [2021-11-13 18:11:45,861 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2021-11-13 18:11:45,861 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 716 transitions. [2021-11-13 18:11:45,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 716 transitions. [2021-11-13 18:11:45,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:11:45,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 716 transitions. [2021-11-13 18:11:45,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 states have internal predecessors, (716), 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) [2021-11-13 18:11:45,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2021-11-13 18:11:45,868 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2021-11-13 18:11:45,868 INFO L186 Difference]: Start difference. First operand has 96 places, 73 transitions, 172 flow. Second operand 9 states and 716 transitions. [2021-11-13 18:11:45,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 83 transitions, 252 flow [2021-11-13 18:11:45,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 220 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-11-13 18:11:45,873 INFO L242 Difference]: Finished difference. Result has 96 places, 73 transitions, 176 flow [2021-11-13 18:11:45,873 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=176, PETRI_PLACES=96, PETRI_TRANSITIONS=73} [2021-11-13 18:11:45,874 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2021-11-13 18:11:45,875 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 73 transitions, 176 flow [2021-11-13 18:11:45,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2021-11-13 18:11:45,875 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:11:45,876 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:45,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:11:45,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:11:45,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:45,877 INFO L85 PathProgramCache]: Analyzing trace with hash -45311480, now seen corresponding path program 1 times [2021-11-13 18:11:45,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:45,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092984445] [2021-11-13 18:11:45,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:45,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:46,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:46,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092984445] [2021-11-13 18:11:46,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092984445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:46,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:46,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:11:46,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877789859] [2021-11-13 18:11:46,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:46,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:11:46,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:46,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:11:46,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:11:46,039 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-11-13 18:11:46,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 73 transitions, 176 flow. Second operand has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 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) [2021-11-13 18:11:46,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:11:46,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-11-13 18:11:46,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:11:46,572 INFO L129 PetriNetUnfolder]: 93/405 cut-off events. [2021-11-13 18:11:46,572 INFO L130 PetriNetUnfolder]: For 163/267 co-relation queries the response was YES. [2021-11-13 18:11:46,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 405 events. 93/405 cut-off events. For 163/267 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2074 event pairs, 8 based on Foata normal form. 16/407 useless extension candidates. Maximal degree in co-relation 759. Up to 47 conditions per place. [2021-11-13 18:11:46,581 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 22 selfloop transitions, 9 changer transitions 49/135 dead transitions. [2021-11-13 18:11:46,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 135 transitions, 530 flow [2021-11-13 18:11:46,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:11:46,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-13 18:11:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1274 transitions. [2021-11-13 18:11:46,591 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8145780051150895 [2021-11-13 18:11:46,592 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1274 transitions. [2021-11-13 18:11:46,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1274 transitions. [2021-11-13 18:11:46,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:11:46,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1274 transitions. [2021-11-13 18:11:46,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 74.94117647058823) internal successors, (1274), 17 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:11:46,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 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) [2021-11-13 18:11:46,604 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 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) [2021-11-13 18:11:46,605 INFO L186 Difference]: Start difference. First operand has 96 places, 73 transitions, 176 flow. Second operand 17 states and 1274 transitions. [2021-11-13 18:11:46,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 135 transitions, 530 flow [2021-11-13 18:11:46,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 135 transitions, 464 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-11-13 18:11:46,617 INFO L242 Difference]: Finished difference. Result has 114 places, 79 transitions, 267 flow [2021-11-13 18:11:46,617 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=267, PETRI_PLACES=114, PETRI_TRANSITIONS=79} [2021-11-13 18:11:46,620 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 30 predicate places. [2021-11-13 18:11:46,623 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 79 transitions, 267 flow [2021-11-13 18:11:46,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 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) [2021-11-13 18:11:46,624 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:11:46,624 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:46,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:11:46,626 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:11:46,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash 999744835, now seen corresponding path program 1 times [2021-11-13 18:11:46,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:46,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725889882] [2021-11-13 18:11:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:46,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:46,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:46,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725889882] [2021-11-13 18:11:46,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725889882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:46,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:46,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:11:46,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669871867] [2021-11-13 18:11:46,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:46,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:11:46,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:46,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:11:46,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:11:46,823 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2021-11-13 18:11:46,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 79 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2021-11-13 18:11:46,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:11:46,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2021-11-13 18:11:46,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:11:47,026 INFO L129 PetriNetUnfolder]: 21/247 cut-off events. [2021-11-13 18:11:47,026 INFO L130 PetriNetUnfolder]: For 641/1130 co-relation queries the response was YES. [2021-11-13 18:11:47,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 247 events. 21/247 cut-off events. For 641/1130 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1157 event pairs, 6 based on Foata normal form. 6/245 useless extension candidates. Maximal degree in co-relation 599. Up to 28 conditions per place. [2021-11-13 18:11:47,029 INFO L132 encePairwiseOnDemand]: 85/92 looper letters, 22 selfloop transitions, 3 changer transitions 18/102 dead transitions. [2021-11-13 18:11:47,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 102 transitions, 534 flow [2021-11-13 18:11:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:11:47,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-13 18:11:47,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 842 transitions. [2021-11-13 18:11:47,033 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8320158102766798 [2021-11-13 18:11:47,033 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 842 transitions. [2021-11-13 18:11:47,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 842 transitions. [2021-11-13 18:11:47,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:11:47,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 842 transitions. [2021-11-13 18:11:47,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.54545454545455) internal successors, (842), 11 states have internal predecessors, (842), 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) [2021-11-13 18:11:47,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 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) [2021-11-13 18:11:47,040 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 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) [2021-11-13 18:11:47,040 INFO L186 Difference]: Start difference. First operand has 114 places, 79 transitions, 267 flow. Second operand 11 states and 842 transitions. [2021-11-13 18:11:47,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 102 transitions, 534 flow [2021-11-13 18:11:47,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 444 flow, removed 42 selfloop flow, removed 8 redundant places. [2021-11-13 18:11:47,050 INFO L242 Difference]: Finished difference. Result has 113 places, 76 transitions, 244 flow [2021-11-13 18:11:47,050 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=244, PETRI_PLACES=113, PETRI_TRANSITIONS=76} [2021-11-13 18:11:47,051 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2021-11-13 18:11:47,051 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 76 transitions, 244 flow [2021-11-13 18:11:47,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2021-11-13 18:11:47,052 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:11:47,052 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:47,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:11:47,053 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:11:47,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:47,053 INFO L85 PathProgramCache]: Analyzing trace with hash 251901706, now seen corresponding path program 1 times [2021-11-13 18:11:47,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:47,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328125406] [2021-11-13 18:11:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:47,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:47,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:47,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328125406] [2021-11-13 18:11:47,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328125406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:47,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:47,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:11:47,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614498988] [2021-11-13 18:11:47,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:47,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:11:47,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:47,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:11:47,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:11:47,152 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-11-13 18:11:47,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 76 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2021-11-13 18:11:47,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:11:47,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-11-13 18:11:47,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:11:47,416 INFO L129 PetriNetUnfolder]: 342/973 cut-off events. [2021-11-13 18:11:47,417 INFO L130 PetriNetUnfolder]: For 579/598 co-relation queries the response was YES. [2021-11-13 18:11:47,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 973 events. 342/973 cut-off events. For 579/598 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6932 event pairs, 19 based on Foata normal form. 28/929 useless extension candidates. Maximal degree in co-relation 1950. Up to 290 conditions per place. [2021-11-13 18:11:47,426 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 14 selfloop transitions, 6 changer transitions 20/103 dead transitions. [2021-11-13 18:11:47,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 103 transitions, 382 flow [2021-11-13 18:11:47,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:11:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 18:11:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 717 transitions. [2021-11-13 18:11:47,429 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8659420289855072 [2021-11-13 18:11:47,429 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 717 transitions. [2021-11-13 18:11:47,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 717 transitions. [2021-11-13 18:11:47,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:11:47,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 717 transitions. [2021-11-13 18:11:47,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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) [2021-11-13 18:11:47,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2021-11-13 18:11:47,435 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2021-11-13 18:11:47,435 INFO L186 Difference]: Start difference. First operand has 113 places, 76 transitions, 244 flow. Second operand 9 states and 717 transitions. [2021-11-13 18:11:47,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 103 transitions, 382 flow [2021-11-13 18:11:47,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 103 transitions, 354 flow, removed 11 selfloop flow, removed 12 redundant places. [2021-11-13 18:11:47,443 INFO L242 Difference]: Finished difference. Result has 107 places, 79 transitions, 272 flow [2021-11-13 18:11:47,443 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=272, PETRI_PLACES=107, PETRI_TRANSITIONS=79} [2021-11-13 18:11:47,444 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 23 predicate places. [2021-11-13 18:11:47,444 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 79 transitions, 272 flow [2021-11-13 18:11:47,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2021-11-13 18:11:47,445 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:11:47,445 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:47,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:11:47,445 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:11:47,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:47,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1451553419, now seen corresponding path program 1 times [2021-11-13 18:11:47,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:47,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184438975] [2021-11-13 18:11:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:47,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:47,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:47,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184438975] [2021-11-13 18:11:47,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184438975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:47,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:47,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:11:47,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329260763] [2021-11-13 18:11:47,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:47,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:11:47,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:47,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:11:47,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:11:47,546 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-11-13 18:11:47,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 79 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 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) [2021-11-13 18:11:47,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:11:47,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-11-13 18:11:47,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:11:47,752 INFO L129 PetriNetUnfolder]: 185/635 cut-off events. [2021-11-13 18:11:47,752 INFO L130 PetriNetUnfolder]: For 1138/1252 co-relation queries the response was YES. [2021-11-13 18:11:47,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 635 events. 185/635 cut-off events. For 1138/1252 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4069 event pairs, 4 based on Foata normal form. 45/649 useless extension candidates. Maximal degree in co-relation 1998. Up to 260 conditions per place. [2021-11-13 18:11:47,758 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 14 selfloop transitions, 9 changer transitions 21/107 dead transitions. [2021-11-13 18:11:47,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 107 transitions, 549 flow [2021-11-13 18:11:47,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:11:47,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-13 18:11:47,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 796 transitions. [2021-11-13 18:11:47,761 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8652173913043478 [2021-11-13 18:11:47,761 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 796 transitions. [2021-11-13 18:11:47,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 796 transitions. [2021-11-13 18:11:47,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:11:47,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 796 transitions. [2021-11-13 18:11:47,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.6) internal successors, (796), 10 states have internal predecessors, (796), 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) [2021-11-13 18:11:47,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2021-11-13 18:11:47,768 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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) [2021-11-13 18:11:47,768 INFO L186 Difference]: Start difference. First operand has 107 places, 79 transitions, 272 flow. Second operand 10 states and 796 transitions. [2021-11-13 18:11:47,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 107 transitions, 549 flow [2021-11-13 18:11:47,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 107 transitions, 520 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-11-13 18:11:47,774 INFO L242 Difference]: Finished difference. Result has 112 places, 82 transitions, 335 flow [2021-11-13 18:11:47,775 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=335, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2021-11-13 18:11:47,775 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 28 predicate places. [2021-11-13 18:11:47,776 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 335 flow [2021-11-13 18:11:47,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 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) [2021-11-13 18:11:47,776 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:11:47,776 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:47,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:11:47,777 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:11:47,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:47,777 INFO L85 PathProgramCache]: Analyzing trace with hash -330331472, now seen corresponding path program 1 times [2021-11-13 18:11:47,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:47,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291711127] [2021-11-13 18:11:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:47,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:47,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:47,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291711127] [2021-11-13 18:11:47,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291711127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:47,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:47,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:11:47,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784694348] [2021-11-13 18:11:47,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:47,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:11:47,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:47,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:11:47,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:11:47,934 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-11-13 18:11:47,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 335 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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) [2021-11-13 18:11:47,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:11:47,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-11-13 18:11:47,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:11:48,134 INFO L129 PetriNetUnfolder]: 56/316 cut-off events. [2021-11-13 18:11:48,134 INFO L130 PetriNetUnfolder]: For 1301/1412 co-relation queries the response was YES. [2021-11-13 18:11:48,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 316 events. 56/316 cut-off events. For 1301/1412 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1568 event pairs, 0 based on Foata normal form. 50/358 useless extension candidates. Maximal degree in co-relation 1089. Up to 102 conditions per place. [2021-11-13 18:11:48,138 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 8 selfloop transitions, 12 changer transitions 15/98 dead transitions. [2021-11-13 18:11:48,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 98 transitions, 543 flow [2021-11-13 18:11:48,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:11:48,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-13 18:11:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 862 transitions. [2021-11-13 18:11:48,142 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8517786561264822 [2021-11-13 18:11:48,142 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 862 transitions. [2021-11-13 18:11:48,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 862 transitions. [2021-11-13 18:11:48,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:11:48,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 862 transitions. [2021-11-13 18:11:48,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 78.36363636363636) internal successors, (862), 11 states have internal predecessors, (862), 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) [2021-11-13 18:11:48,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 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) [2021-11-13 18:11:48,150 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 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) [2021-11-13 18:11:48,150 INFO L186 Difference]: Start difference. First operand has 112 places, 82 transitions, 335 flow. Second operand 11 states and 862 transitions. [2021-11-13 18:11:48,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 98 transitions, 543 flow [2021-11-13 18:11:48,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 98 transitions, 428 flow, removed 46 selfloop flow, removed 14 redundant places. [2021-11-13 18:11:48,159 INFO L242 Difference]: Finished difference. Result has 110 places, 82 transitions, 305 flow [2021-11-13 18:11:48,160 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=305, PETRI_PLACES=110, PETRI_TRANSITIONS=82} [2021-11-13 18:11:48,160 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 26 predicate places. [2021-11-13 18:11:48,161 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 82 transitions, 305 flow [2021-11-13 18:11:48,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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) [2021-11-13 18:11:48,162 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:11:48,162 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:48,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:11:48,163 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:11:48,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1911398665, now seen corresponding path program 1 times [2021-11-13 18:11:48,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:48,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193911128] [2021-11-13 18:11:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:48,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:11:48,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:48,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193911128] [2021-11-13 18:11:48,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193911128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:48,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:48,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:11:48,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800422752] [2021-11-13 18:11:48,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:48,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:11:48,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:48,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:11:48,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:11:48,332 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-11-13 18:11:48,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 82 transitions, 305 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 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) [2021-11-13 18:11:48,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:11:48,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-11-13 18:11:48,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:11:48,442 INFO L129 PetriNetUnfolder]: 28/263 cut-off events. [2021-11-13 18:11:48,443 INFO L130 PetriNetUnfolder]: For 338/354 co-relation queries the response was YES. [2021-11-13 18:11:48,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 263 events. 28/263 cut-off events. For 338/354 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1202 event pairs, 2 based on Foata normal form. 2/259 useless extension candidates. Maximal degree in co-relation 594. Up to 47 conditions per place. [2021-11-13 18:11:48,445 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 0 selfloop transitions, 0 changer transitions 84/84 dead transitions. [2021-11-13 18:11:48,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 84 transitions, 352 flow [2021-11-13 18:11:48,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:11:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 18:11:48,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 541 transitions. [2021-11-13 18:11:48,447 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8400621118012422 [2021-11-13 18:11:48,447 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 541 transitions. [2021-11-13 18:11:48,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 541 transitions. [2021-11-13 18:11:48,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:11:48,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 541 transitions. [2021-11-13 18:11:48,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.28571428571429) internal successors, (541), 7 states have internal predecessors, (541), 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) [2021-11-13 18:11:48,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2021-11-13 18:11:48,454 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2021-11-13 18:11:48,454 INFO L186 Difference]: Start difference. First operand has 110 places, 82 transitions, 305 flow. Second operand 7 states and 541 transitions. [2021-11-13 18:11:48,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 84 transitions, 352 flow [2021-11-13 18:11:48,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 84 transitions, 270 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-11-13 18:11:48,459 INFO L242 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2021-11-13 18:11:48,460 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2021-11-13 18:11:48,463 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 11 predicate places. [2021-11-13 18:11:48,464 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2021-11-13 18:11:48,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 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) [2021-11-13 18:11:48,467 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-11-13 18:11:48,467 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-11-13 18:11:48,468 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-11-13 18:11:48,468 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-11-13 18:11:48,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:11:48,472 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:48,474 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 18:11:48,474 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:11:48,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:11:48 BasicIcfg [2021-11-13 18:11:48,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 18:11:48,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:11:48,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:11:48,485 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:11:48,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:11:44" (3/4) ... [2021-11-13 18:11:48,488 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 18:11:48,496 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-11-13 18:11:48,496 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-11-13 18:11:48,496 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-11-13 18:11:48,504 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-13 18:11:48,505 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-13 18:11:48,505 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-13 18:11:48,505 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 18:11:48,543 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 18:11:48,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:11:48,545 INFO L158 Benchmark]: Toolchain (without parser) took 5514.83ms. Allocated memory was 125.8MB in the beginning and 174.1MB in the end (delta: 48.2MB). Free memory was 84.1MB in the beginning and 75.2MB in the end (delta: 8.9MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2021-11-13 18:11:48,545 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:11:48,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.55ms. Allocated memory is still 125.8MB. Free memory was 83.9MB in the beginning and 88.1MB in the end (delta: -4.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:11:48,546 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.36ms. Allocated memory is still 125.8MB. Free memory was 88.1MB in the beginning and 85.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:11:48,546 INFO L158 Benchmark]: Boogie Preprocessor took 30.04ms. Allocated memory is still 125.8MB. Free memory was 85.9MB in the beginning and 84.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:11:48,547 INFO L158 Benchmark]: RCFGBuilder took 495.90ms. Allocated memory is still 125.8MB. Free memory was 84.4MB in the beginning and 72.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 18:11:48,547 INFO L158 Benchmark]: TraceAbstraction took 4295.71ms. Allocated memory was 125.8MB in the beginning and 174.1MB in the end (delta: 48.2MB). Free memory was 71.8MB in the beginning and 78.4MB in the end (delta: -6.5MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. [2021-11-13 18:11:48,547 INFO L158 Benchmark]: Witness Printer took 59.54ms. Allocated memory is still 174.1MB. Free memory was 78.4MB in the beginning and 75.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:11:48,551 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 579.55ms. Allocated memory is still 125.8MB. Free memory was 83.9MB in the beginning and 88.1MB in the end (delta: -4.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.36ms. Allocated memory is still 125.8MB. Free memory was 88.1MB in the beginning and 85.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.04ms. Allocated memory is still 125.8MB. Free memory was 85.9MB in the beginning and 84.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 495.90ms. Allocated memory is still 125.8MB. Free memory was 84.4MB in the beginning and 72.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4295.71ms. Allocated memory was 125.8MB in the beginning and 174.1MB in the end (delta: 48.2MB). Free memory was 71.8MB in the beginning and 78.4MB in the end (delta: -6.5MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. * Witness Printer took 59.54ms. Allocated memory is still 174.1MB. Free memory was 78.4MB in the beginning and 75.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 217 SdHoareTripleChecker+Valid, 458.75ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 217 mSDsluCounter, 303 SdHoareTripleChecker+Invalid, 353.37ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 337 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 458 IncrementalHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 70 mSDtfsCounter, 458 mSolverCounterSat, 17.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred in iteration=6, InterpolantAutomatonStates: 83, 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, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 482 ConstructedInterpolants, 0 QuantifiedInterpolants, 1506 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2021-11-13 18:11:48,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5c34e73-5bad-4b4d-913d-606ec9d4727f/bin/uautomizer-YU5uOKAj3y/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