./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be --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 8e0b8e6efb6fc18f3ca2ba094d3acbfc6a07fbc0100e70485e3a3a84ea56105b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:40:24,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:40:24,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:40:24,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:40:24,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:40:24,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:40:24,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:40:24,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:40:24,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:40:24,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:40:24,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:40:24,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:40:24,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:40:24,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:40:24,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:40:24,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:40:24,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:40:24,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:40:24,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:40:24,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:40:24,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:40:24,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:40:24,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:40:24,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:40:24,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:40:24,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:40:24,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:40:24,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:40:24,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:40:24,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:40:24,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:40:24,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:40:24,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:40:24,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:40:24,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:40:24,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:40:24,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:40:24,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:40:24,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:40:24,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:40:24,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:40:24,845 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:40:24,868 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:40:24,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:40:24,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:40:24,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:40:24,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:40:24,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:40:24,882 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:40:24,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:40:24,882 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:40:24,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:40:24,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:40:24,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:40:24,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:40:24,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:40:24,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:40:24,884 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:40:24,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:40:24,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:40:24,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:40:24,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:40:24,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:40:24,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:40:24,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:40:24,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:40:24,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:40:24,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:40:24,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:40:24,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:40:24,887 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:40:24,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:40:24,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:40:24,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:40:24,888 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_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e0b8e6efb6fc18f3ca2ba094d3acbfc6a07fbc0100e70485e3a3a84ea56105b [2021-10-21 19:40:25,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:40:25,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:40:25,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:40:25,169 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:40:25,169 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:40:25,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-21 19:40:25,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/data/7c4a1bced/f1afa44928954885bca2d7526eac0228/FLAG16b4d3d76 [2021-10-21 19:40:25,691 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:40:25,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-21 19:40:25,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/data/7c4a1bced/f1afa44928954885bca2d7526eac0228/FLAG16b4d3d76 [2021-10-21 19:40:26,025 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/data/7c4a1bced/f1afa44928954885bca2d7526eac0228 [2021-10-21 19:40:26,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:40:26,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:40:26,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:40:26,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:40:26,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:40:26,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:40:26" (1/1) ... [2021-10-21 19:40:26,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b0bbad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:26, skipping insertion in model container [2021-10-21 19:40:26,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:40:26" (1/1) ... [2021-10-21 19:40:26,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:40:26,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:40:26,277 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_8fc2a069-6891-43fe-bac3-a470ee8d8b27/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-21 19:40:26,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:40:26,470 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:40:26,484 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_8fc2a069-6891-43fe-bac3-a470ee8d8b27/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-10-21 19:40:26,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:40:26,563 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:40:26,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:26 WrapperNode [2021-10-21 19:40:26,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:40:26,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:40:26,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:40:26,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:40:26,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:26" (1/1) ... [2021-10-21 19:40:26,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:26" (1/1) ... [2021-10-21 19:40:26,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:40:26,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:40:26,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:40:26,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:40:26,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:26" (1/1) ... [2021-10-21 19:40:26,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:26" (1/1) ... [2021-10-21 19:40:26,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:26" (1/1) ... [2021-10-21 19:40:26,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:26" (1/1) ... [2021-10-21 19:40:26,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:26" (1/1) ... [2021-10-21 19:40:26,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:26" (1/1) ... [2021-10-21 19:40:26,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:26" (1/1) ... [2021-10-21 19:40:26,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:40:26,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:40:26,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:40:26,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:40:26,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:26" (1/1) ... [2021-10-21 19:40:26,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:40:26,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:40:26,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:40:26,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:40:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:40:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 19:40:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:40:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:40:26,810 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-21 19:40:26,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-21 19:40:26,810 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-21 19:40:26,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-21 19:40:26,810 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-21 19:40:26,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-21 19:40:26,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:40:26,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 19:40:26,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:40:26,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:40:26,814 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 19:40:27,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:40:27,167 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 19:40:27,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:40:27 BoogieIcfgContainer [2021-10-21 19:40:27,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:40:27,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:40:27,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:40:27,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:40:27,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:40:26" (1/3) ... [2021-10-21 19:40:27,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6143240e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:40:27, skipping insertion in model container [2021-10-21 19:40:27,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:26" (2/3) ... [2021-10-21 19:40:27,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6143240e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:40:27, skipping insertion in model container [2021-10-21 19:40:27,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:40:27" (3/3) ... [2021-10-21 19:40:27,177 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-10-21 19:40:27,182 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 19:40:27,182 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:40:27,183 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:40:27,183 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 19:40:27,223 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,224 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,224 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,224 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,224 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,225 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,225 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,225 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,227 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,227 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,228 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,228 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,228 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,228 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,229 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,229 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,229 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,229 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,230 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,230 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,230 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,230 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,231 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,231 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,231 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,231 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,232 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,232 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,232 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,232 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,236 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,236 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,236 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,236 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,241 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,242 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,242 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,242 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,245 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,245 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,245 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,246 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:40:27,248 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-21 19:40:27,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:40:27,298 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 [2021-10-21 19:40:27,299 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 19:40:27,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-10-21 19:40:27,371 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-10-21 19:40:27,372 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:40:27,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-10-21 19:40:27,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-10-21 19:40:27,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-10-21 19:40:27,400 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-10-21 19:40:27,400 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:40:27,401 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:40:27,401 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] [2021-10-21 19:40:27,402 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:40:27,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:27,407 INFO L82 PathProgramCache]: Analyzing trace with hash 939149912, now seen corresponding path program 1 times [2021-10-21 19:40:27,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:27,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967830811] [2021-10-21 19:40:27,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:27,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:27,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:27,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967830811] [2021-10-21 19:40:27,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967830811] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:27,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:27,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:40:27,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603659010] [2021-10-21 19:40:27,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:40:27,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:40:27,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:40:27,989 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-10-21 19:40:27,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:27,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:40:27,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-10-21 19:40:27,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:40:28,298 INFO L129 PetriNetUnfolder]: 87/302 cut-off events. [2021-10-21 19:40:28,300 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 19:40:28,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 302 events. 87/302 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1337 event pairs, 10 based on Foata normal form. 14/305 useless extension candidates. Maximal degree in co-relation 466. Up to 60 conditions per place. [2021-10-21 19:40:28,306 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 5 changer transitions 35/109 dead transitions. [2021-10-21 19:40:28,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 339 flow [2021-10-21 19:40:28,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:40:28,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 19:40:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 907 transitions. [2021-10-21 19:40:28,335 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.850844277673546 [2021-10-21 19:40:28,335 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 907 transitions. [2021-10-21 19:40:28,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 907 transitions. [2021-10-21 19:40:28,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:40:28,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 907 transitions. [2021-10-21 19:40:28,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.76923076923077) internal successors, (907), 13 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:28,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:28,360 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:28,361 INFO L186 Difference]: Start difference. First operand has 76 places, 67 transitions, 143 flow. Second operand 13 states and 907 transitions. [2021-10-21 19:40:28,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 109 transitions, 339 flow [2021-10-21 19:40:28,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-21 19:40:28,370 INFO L242 Difference]: Finished difference. Result has 96 places, 68 transitions, 195 flow [2021-10-21 19:40:28,372 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=195, PETRI_PLACES=96, PETRI_TRANSITIONS=68} [2021-10-21 19:40:28,373 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2021-10-21 19:40:28,373 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 68 transitions, 195 flow [2021-10-21 19:40:28,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:28,374 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:40:28,374 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] [2021-10-21 19:40:28,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:40:28,375 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:40:28,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:28,376 INFO L82 PathProgramCache]: Analyzing trace with hash -676079175, now seen corresponding path program 1 times [2021-10-21 19:40:28,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:28,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528376543] [2021-10-21 19:40:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:28,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:28,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:28,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528376543] [2021-10-21 19:40:28,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528376543] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:28,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:28,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:40:28,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031155653] [2021-10-21 19:40:28,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:40:28,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:28,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:40:28,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:40:28,675 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-10-21 19:40:28,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 68 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:28,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:40:28,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-10-21 19:40:28,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:40:28,970 INFO L129 PetriNetUnfolder]: 51/261 cut-off events. [2021-10-21 19:40:28,970 INFO L130 PetriNetUnfolder]: For 414/468 co-relation queries the response was YES. [2021-10-21 19:40:28,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 261 events. 51/261 cut-off events. For 414/468 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1208 event pairs, 10 based on Foata normal form. 9/265 useless extension candidates. Maximal degree in co-relation 648. Up to 48 conditions per place. [2021-10-21 19:40:28,979 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 14 selfloop transitions, 7 changer transitions 28/102 dead transitions. [2021-10-21 19:40:28,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 102 transitions, 509 flow [2021-10-21 19:40:28,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:40:28,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 19:40:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 897 transitions. [2021-10-21 19:40:28,984 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8414634146341463 [2021-10-21 19:40:28,984 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 897 transitions. [2021-10-21 19:40:28,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 897 transitions. [2021-10-21 19:40:28,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:40:28,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 897 transitions. [2021-10-21 19:40:28,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.0) internal successors, (897), 13 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:28,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:28,993 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:28,993 INFO L186 Difference]: Start difference. First operand has 96 places, 68 transitions, 195 flow. Second operand 13 states and 897 transitions. [2021-10-21 19:40:28,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 102 transitions, 509 flow [2021-10-21 19:40:29,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 102 transitions, 431 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-10-21 19:40:29,007 INFO L242 Difference]: Finished difference. Result has 101 places, 69 transitions, 215 flow [2021-10-21 19:40:29,007 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=215, PETRI_PLACES=101, PETRI_TRANSITIONS=69} [2021-10-21 19:40:29,008 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2021-10-21 19:40:29,008 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 69 transitions, 215 flow [2021-10-21 19:40:29,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:29,010 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:40:29,011 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] [2021-10-21 19:40:29,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:40:29,013 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:40:29,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:29,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1789674506, now seen corresponding path program 1 times [2021-10-21 19:40:29,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:29,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142662162] [2021-10-21 19:40:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:29,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:29,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:29,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:29,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142662162] [2021-10-21 19:40:29,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142662162] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:29,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:29,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:40:29,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981641660] [2021-10-21 19:40:29,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:40:29,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:29,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:40:29,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:40:29,227 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2021-10-21 19:40:29,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 69 transitions, 215 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:29,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:40:29,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2021-10-21 19:40:29,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:40:29,439 INFO L129 PetriNetUnfolder]: 63/258 cut-off events. [2021-10-21 19:40:29,439 INFO L130 PetriNetUnfolder]: For 607/721 co-relation queries the response was YES. [2021-10-21 19:40:29,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 258 events. 63/258 cut-off events. For 607/721 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1122 event pairs, 6 based on Foata normal form. 9/256 useless extension candidates. Maximal degree in co-relation 723. Up to 66 conditions per place. [2021-10-21 19:40:29,442 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 10 selfloop transitions, 4 changer transitions 26/97 dead transitions. [2021-10-21 19:40:29,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 97 transitions, 492 flow [2021-10-21 19:40:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:40:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 19:40:29,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 703 transitions. [2021-10-21 19:40:29,447 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8573170731707317 [2021-10-21 19:40:29,447 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 703 transitions. [2021-10-21 19:40:29,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 703 transitions. [2021-10-21 19:40:29,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:40:29,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 703 transitions. [2021-10-21 19:40:29,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.3) internal successors, (703), 10 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:29,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:29,454 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:29,454 INFO L186 Difference]: Start difference. First operand has 101 places, 69 transitions, 215 flow. Second operand 10 states and 703 transitions. [2021-10-21 19:40:29,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 97 transitions, 492 flow [2021-10-21 19:40:29,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 97 transitions, 430 flow, removed 24 selfloop flow, removed 10 redundant places. [2021-10-21 19:40:29,466 INFO L242 Difference]: Finished difference. Result has 99 places, 69 transitions, 215 flow [2021-10-21 19:40:29,466 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=215, PETRI_PLACES=99, PETRI_TRANSITIONS=69} [2021-10-21 19:40:29,466 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 23 predicate places. [2021-10-21 19:40:29,467 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 69 transitions, 215 flow [2021-10-21 19:40:29,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:29,468 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:40:29,469 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] [2021-10-21 19:40:29,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:40:29,473 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:40:29,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:29,474 INFO L82 PathProgramCache]: Analyzing trace with hash 113009271, now seen corresponding path program 1 times [2021-10-21 19:40:29,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:29,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822167264] [2021-10-21 19:40:29,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:29,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:29,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:29,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:29,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822167264] [2021-10-21 19:40:29,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822167264] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:29,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:29,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:40:29,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155835851] [2021-10-21 19:40:29,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:40:29,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:29,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:40:29,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:40:29,602 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-10-21 19:40:29,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 69 transitions, 215 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:29,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:40:29,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-10-21 19:40:29,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:40:29,798 INFO L129 PetriNetUnfolder]: 270/675 cut-off events. [2021-10-21 19:40:29,799 INFO L130 PetriNetUnfolder]: For 379/387 co-relation queries the response was YES. [2021-10-21 19:40:29,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 675 events. 270/675 cut-off events. For 379/387 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4321 event pairs, 11 based on Foata normal form. 0/607 useless extension candidates. Maximal degree in co-relation 1386. Up to 187 conditions per place. [2021-10-21 19:40:29,806 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 21 selfloop transitions, 15 changer transitions 5/99 dead transitions. [2021-10-21 19:40:29,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 99 transitions, 357 flow [2021-10-21 19:40:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:40:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 19:40:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 723 transitions. [2021-10-21 19:40:29,809 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8817073170731707 [2021-10-21 19:40:29,809 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 723 transitions. [2021-10-21 19:40:29,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 723 transitions. [2021-10-21 19:40:29,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:40:29,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 723 transitions. [2021-10-21 19:40:29,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.3) internal successors, (723), 10 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:29,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:29,817 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:29,817 INFO L186 Difference]: Start difference. First operand has 99 places, 69 transitions, 215 flow. Second operand 10 states and 723 transitions. [2021-10-21 19:40:29,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 99 transitions, 357 flow [2021-10-21 19:40:29,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 99 transitions, 331 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-10-21 19:40:29,827 INFO L242 Difference]: Finished difference. Result has 98 places, 82 transitions, 298 flow [2021-10-21 19:40:29,828 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=298, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2021-10-21 19:40:29,828 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2021-10-21 19:40:29,828 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 298 flow [2021-10-21 19:40:29,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:29,829 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:40:29,829 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] [2021-10-21 19:40:29,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:40:29,829 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:40:29,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:29,830 INFO L82 PathProgramCache]: Analyzing trace with hash 2083302689, now seen corresponding path program 1 times [2021-10-21 19:40:29,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:29,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120724114] [2021-10-21 19:40:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:29,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:30,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:30,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120724114] [2021-10-21 19:40:30,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120724114] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:30,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:30,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:40:30,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438367312] [2021-10-21 19:40:30,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:40:30,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:30,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:40:30,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:40:30,012 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-10-21 19:40:30,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:30,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:40:30,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-10-21 19:40:30,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:40:30,257 INFO L129 PetriNetUnfolder]: 250/653 cut-off events. [2021-10-21 19:40:30,257 INFO L130 PetriNetUnfolder]: For 1606/1933 co-relation queries the response was YES. [2021-10-21 19:40:30,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 653 events. 250/653 cut-off events. For 1606/1933 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4300 event pairs, 0 based on Foata normal form. 63/672 useless extension candidates. Maximal degree in co-relation 2216. Up to 275 conditions per place. [2021-10-21 19:40:30,263 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 20 selfloop transitions, 28 changer transitions 11/117 dead transitions. [2021-10-21 19:40:30,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 117 transitions, 640 flow [2021-10-21 19:40:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:40:30,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 19:40:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 939 transitions. [2021-10-21 19:40:30,269 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8808630393996247 [2021-10-21 19:40:30,269 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 939 transitions. [2021-10-21 19:40:30,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 939 transitions. [2021-10-21 19:40:30,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:40:30,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 939 transitions. [2021-10-21 19:40:30,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.23076923076923) internal successors, (939), 13 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:30,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:30,279 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:30,279 INFO L186 Difference]: Start difference. First operand has 98 places, 82 transitions, 298 flow. Second operand 13 states and 939 transitions. [2021-10-21 19:40:30,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 117 transitions, 640 flow [2021-10-21 19:40:30,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 117 transitions, 633 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-21 19:40:30,286 INFO L242 Difference]: Finished difference. Result has 114 places, 99 transitions, 517 flow [2021-10-21 19:40:30,287 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=517, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2021-10-21 19:40:30,287 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 38 predicate places. [2021-10-21 19:40:30,287 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 517 flow [2021-10-21 19:40:30,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:30,288 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:40:30,288 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] [2021-10-21 19:40:30,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:40:30,288 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:40:30,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:30,289 INFO L82 PathProgramCache]: Analyzing trace with hash 614554604, now seen corresponding path program 1 times [2021-10-21 19:40:30,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:30,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457240106] [2021-10-21 19:40:30,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:30,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:30,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:30,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457240106] [2021-10-21 19:40:30,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457240106] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:30,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:30,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:40:30,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261076173] [2021-10-21 19:40:30,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:40:30,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:30,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:40:30,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:40:30,439 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-10-21 19:40:30,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 517 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:30,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:40:30,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-10-21 19:40:30,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:40:30,755 INFO L129 PetriNetUnfolder]: 170/546 cut-off events. [2021-10-21 19:40:30,755 INFO L130 PetriNetUnfolder]: For 2687/3405 co-relation queries the response was YES. [2021-10-21 19:40:30,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 546 events. 170/546 cut-off events. For 2687/3405 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3854 event pairs, 0 based on Foata normal form. 78/587 useless extension candidates. Maximal degree in co-relation 2341. Up to 196 conditions per place. [2021-10-21 19:40:30,762 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 32 changer transitions 19/125 dead transitions. [2021-10-21 19:40:30,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 125 transitions, 833 flow [2021-10-21 19:40:30,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 19:40:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 19:40:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1140 transitions. [2021-10-21 19:40:30,767 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8689024390243902 [2021-10-21 19:40:30,767 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1140 transitions. [2021-10-21 19:40:30,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1140 transitions. [2021-10-21 19:40:30,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:40:30,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1140 transitions. [2021-10-21 19:40:30,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.25) internal successors, (1140), 16 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:30,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:30,779 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:30,779 INFO L186 Difference]: Start difference. First operand has 114 places, 99 transitions, 517 flow. Second operand 16 states and 1140 transitions. [2021-10-21 19:40:30,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 125 transitions, 833 flow [2021-10-21 19:40:30,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 125 transitions, 749 flow, removed 34 selfloop flow, removed 8 redundant places. [2021-10-21 19:40:30,799 INFO L242 Difference]: Finished difference. Result has 128 places, 100 transitions, 547 flow [2021-10-21 19:40:30,799 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=547, PETRI_PLACES=128, PETRI_TRANSITIONS=100} [2021-10-21 19:40:30,800 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 52 predicate places. [2021-10-21 19:40:30,800 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 100 transitions, 547 flow [2021-10-21 19:40:30,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:30,800 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:40:30,801 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] [2021-10-21 19:40:30,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:40:30,801 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:40:30,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:30,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1900002659, now seen corresponding path program 1 times [2021-10-21 19:40:30,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:30,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032094141] [2021-10-21 19:40:30,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:30,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:30,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:30,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032094141] [2021-10-21 19:40:30,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032094141] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:30,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:30,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:40:30,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510714797] [2021-10-21 19:40:30,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:40:30,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:30,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:40:30,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:40:30,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 82 [2021-10-21 19:40:30,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 100 transitions, 547 flow. Second operand has 6 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:30,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:40:30,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 82 [2021-10-21 19:40:30,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:40:31,064 INFO L129 PetriNetUnfolder]: 101/523 cut-off events. [2021-10-21 19:40:31,064 INFO L130 PetriNetUnfolder]: For 1582/1679 co-relation queries the response was YES. [2021-10-21 19:40:31,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 523 events. 101/523 cut-off events. For 1582/1679 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4027 event pairs, 0 based on Foata normal form. 1/495 useless extension candidates. Maximal degree in co-relation 1712. Up to 81 conditions per place. [2021-10-21 19:40:31,068 INFO L132 encePairwiseOnDemand]: 76/82 looper letters, 7 selfloop transitions, 2 changer transitions 33/104 dead transitions. [2021-10-21 19:40:31,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 104 transitions, 587 flow [2021-10-21 19:40:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:40:31,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-21 19:40:31,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 429 transitions. [2021-10-21 19:40:31,070 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8719512195121951 [2021-10-21 19:40:31,070 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 429 transitions. [2021-10-21 19:40:31,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 429 transitions. [2021-10-21 19:40:31,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:40:31,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 429 transitions. [2021-10-21 19:40:31,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:31,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:31,074 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:31,074 INFO L186 Difference]: Start difference. First operand has 128 places, 100 transitions, 547 flow. Second operand 6 states and 429 transitions. [2021-10-21 19:40:31,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 104 transitions, 587 flow [2021-10-21 19:40:31,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 104 transitions, 490 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-10-21 19:40:31,097 INFO L242 Difference]: Finished difference. Result has 119 places, 71 transitions, 256 flow [2021-10-21 19:40:31,097 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=119, PETRI_TRANSITIONS=71} [2021-10-21 19:40:31,098 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 43 predicate places. [2021-10-21 19:40:31,098 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 71 transitions, 256 flow [2021-10-21 19:40:31,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:31,098 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:40:31,098 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] [2021-10-21 19:40:31,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:40:31,099 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 19:40:31,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:31,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2136198657, now seen corresponding path program 2 times [2021-10-21 19:40:31,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:31,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678860535] [2021-10-21 19:40:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:31,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:31,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:31,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678860535] [2021-10-21 19:40:31,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678860535] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:31,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:31,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:40:31,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84468082] [2021-10-21 19:40:31,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:40:31,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:31,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:40:31,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:40:31,202 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2021-10-21 19:40:31,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 71 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:31,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:40:31,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2021-10-21 19:40:31,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:40:31,290 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2021-10-21 19:40:31,291 INFO L130 PetriNetUnfolder]: For 57/58 co-relation queries the response was YES. [2021-10-21 19:40:31,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 80 events. 5/80 cut-off events. For 57/58 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 2/81 useless extension candidates. Maximal degree in co-relation 158. Up to 8 conditions per place. [2021-10-21 19:40:31,291 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2021-10-21 19:40:31,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 69 transitions, 278 flow [2021-10-21 19:40:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:40:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-21 19:40:31,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 519 transitions. [2021-10-21 19:40:31,294 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7911585365853658 [2021-10-21 19:40:31,294 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 519 transitions. [2021-10-21 19:40:31,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 519 transitions. [2021-10-21 19:40:31,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:40:31,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 519 transitions. [2021-10-21 19:40:31,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 64.875) internal successors, (519), 8 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:31,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:31,299 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:31,299 INFO L186 Difference]: Start difference. First operand has 119 places, 71 transitions, 256 flow. Second operand 8 states and 519 transitions. [2021-10-21 19:40:31,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 69 transitions, 278 flow [2021-10-21 19:40:31,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 69 transitions, 198 flow, removed 16 selfloop flow, removed 24 redundant places. [2021-10-21 19:40:31,301 INFO L242 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2021-10-21 19:40:31,302 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2021-10-21 19:40:31,302 INFO L334 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2021-10-21 19:40:31,302 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2021-10-21 19:40:31,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:40:31,304 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:40:31,305 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 19:40:31,305 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 19:40:31,305 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-21 19:40:31,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:40:31,310 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 19:40:31,310 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:40:31,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:40:31 BasicIcfg [2021-10-21 19:40:31,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:40:31,313 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:40:31,313 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:40:31,313 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:40:31,314 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:40:27" (3/4) ... [2021-10-21 19:40:31,316 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:40:31,322 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-21 19:40:31,322 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-21 19:40:31,323 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-21 19:40:31,327 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-21 19:40:31,327 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:40:31,327 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:40:31,327 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:40:31,363 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:40:31,364 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:40:31,365 INFO L168 Benchmark]: Toolchain (without parser) took 5334.85 ms. Allocated memory was 92.3 MB in the beginning and 146.8 MB in the end (delta: 54.5 MB). Free memory was 53.0 MB in the beginning and 110.2 MB in the end (delta: -57.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:40:31,366 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 92.3 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:40:31,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 523.67 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 52.8 MB in the beginning and 78.9 MB in the end (delta: -26.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:31,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.30 ms. Allocated memory is still 111.1 MB. Free memory was 78.9 MB in the beginning and 76.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:31,367 INFO L168 Benchmark]: Boogie Preprocessor took 54.20 ms. Allocated memory is still 111.1 MB. Free memory was 76.8 MB in the beginning and 75.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:40:31,367 INFO L168 Benchmark]: RCFGBuilder took 476.47 ms. Allocated memory is still 111.1 MB. Free memory was 75.4 MB in the beginning and 63.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:31,368 INFO L168 Benchmark]: TraceAbstraction took 4141.90 ms. Allocated memory was 111.1 MB in the beginning and 146.8 MB in the end (delta: 35.7 MB). Free memory was 62.9 MB in the beginning and 113.4 MB in the end (delta: -50.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:40:31,368 INFO L168 Benchmark]: Witness Printer took 50.54 ms. Allocated memory is still 146.8 MB. Free memory was 113.4 MB in the beginning and 110.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:31,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 92.3 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 523.67 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 52.8 MB in the beginning and 78.9 MB in the end (delta: -26.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.30 ms. Allocated memory is still 111.1 MB. Free memory was 78.9 MB in the beginning and 76.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.20 ms. Allocated memory is still 111.1 MB. Free memory was 76.8 MB in the beginning and 75.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 476.47 ms. Allocated memory is still 111.1 MB. Free memory was 75.4 MB in the beginning and 63.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4141.90 ms. Allocated memory was 111.1 MB in the beginning and 146.8 MB in the end (delta: 35.7 MB). Free memory was 62.9 MB in the beginning and 113.4 MB in the end (delta: -50.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 50.54 ms. Allocated memory is still 146.8 MB. Free memory was 113.4 MB in the beginning and 110.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 20.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4020.3ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2103.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 81.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 86 SDtfs, 266 SDslu, 277 SDs, 0 SdLazy, 362 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 285.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 866.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=547occurred in iteration=6, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 82.0ms SsaConstructionTime, 294.5ms SatisfiabilityAnalysisTime, 1152.3ms InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 426 ConstructedInterpolants, 0 QuantifiedInterpolants, 1558 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! [2021-10-21 19:40:31,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2a069-6891-43fe-bac3-a470ee8d8b27/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...