./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa --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 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:08:18,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:08:18,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:08:18,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:08:18,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:08:18,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:08:18,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:08:18,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:08:18,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:08:18,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:08:18,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:08:18,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:08:18,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:08:18,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:08:18,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:08:18,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:08:18,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:08:18,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:08:18,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:08:18,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:08:18,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:08:18,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:08:18,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:08:18,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:08:18,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:08:18,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:08:18,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:08:18,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:08:18,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:08:18,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:08:18,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:08:18,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:08:18,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:08:18,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:08:18,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:08:18,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:08:18,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:08:18,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:08:18,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:08:18,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:08:18,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:08:18,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:08:18,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:08:18,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:08:18,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:08:18,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:08:18,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:08:18,872 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:08:18,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:08:18,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:08:18,873 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:08:18,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:08:18,873 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:08:18,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:08:18,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:08:18,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:08:18,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:08:18,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:08:18,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:08:18,875 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:08:18,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:08:18,875 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:08:18,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:08:18,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:08:18,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:08:18,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:08:18,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:08:18,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:08:18,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:08:18,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:08:18,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:08:18,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:08:18,877 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:08:18,877 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:08:18,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:08:18,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:08:18,878 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_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b [2021-12-06 23:08:19,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:08:19,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:08:19,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:08:19,113 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:08:19,114 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:08:19,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2021-12-06 23:08:19,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/data/3ce8d6e7c/403271c690b940b0bf3c308fabae8586/FLAG4c5ad7081 [2021-12-06 23:08:19,592 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:08:19,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2021-12-06 23:08:19,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/data/3ce8d6e7c/403271c690b940b0bf3c308fabae8586/FLAG4c5ad7081 [2021-12-06 23:08:19,613 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/data/3ce8d6e7c/403271c690b940b0bf3c308fabae8586 [2021-12-06 23:08:19,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:08:19,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:08:19,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:08:19,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:08:19,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:08:19,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:08:19" (1/1) ... [2021-12-06 23:08:19,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f295c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:19, skipping insertion in model container [2021-12-06 23:08:19,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:08:19" (1/1) ... [2021-12-06 23:08:19,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:08:19,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:08:19,808 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-06 23:08:19,908 WARN L230 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_4bd08026-fb0c-4c1f-9170-eb852b44fabb/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2021-12-06 23:08:19,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:08:19,925 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:08:19,938 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-06 23:08:19,963 WARN L230 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_4bd08026-fb0c-4c1f-9170-eb852b44fabb/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2021-12-06 23:08:19,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:08:19,997 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:08:19,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:19 WrapperNode [2021-12-06 23:08:19,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:08:19,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:08:19,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:08:19,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:08:20,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:19" (1/1) ... [2021-12-06 23:08:20,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:19" (1/1) ... [2021-12-06 23:08:20,042 INFO L137 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2021-12-06 23:08:20,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:08:20,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:08:20,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:08:20,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:08:20,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:19" (1/1) ... [2021-12-06 23:08:20,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:19" (1/1) ... [2021-12-06 23:08:20,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:19" (1/1) ... [2021-12-06 23:08:20,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:19" (1/1) ... [2021-12-06 23:08:20,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:19" (1/1) ... [2021-12-06 23:08:20,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:19" (1/1) ... [2021-12-06 23:08:20,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:19" (1/1) ... [2021-12-06 23:08:20,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:08:20,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:08:20,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:08:20,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:08:20,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:19" (1/1) ... [2021-12-06 23:08:20,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:08:20,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:20,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:08:20,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:08:20,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:08:20,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:08:20,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-06 23:08:20,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:08:20,134 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2021-12-06 23:08:20,134 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2021-12-06 23:08:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:08:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:08:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:08:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-06 23:08:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:08:20,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:08:20,136 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2021-12-06 23:08:20,136 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2021-12-06 23:08:20,137 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 23:08:20,222 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:08:20,223 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:08:20,350 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:08:20,374 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:08:20,375 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 23:08:20,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:08:20 BoogieIcfgContainer [2021-12-06 23:08:20,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:08:20,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:08:20,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:08:20,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:08:20,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:08:19" (1/3) ... [2021-12-06 23:08:20,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4dcc16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:08:20, skipping insertion in model container [2021-12-06 23:08:20,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:19" (2/3) ... [2021-12-06 23:08:20,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4dcc16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:08:20, skipping insertion in model container [2021-12-06 23:08:20,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:08:20" (3/3) ... [2021-12-06 23:08:20,382 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2021-12-06 23:08:20,386 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 23:08:20,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:08:20,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:08:20,386 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 23:08:20,410 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,410 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,410 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,410 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,410 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,410 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,411 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,411 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,411 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,411 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,411 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,411 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,411 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,411 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,412 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,412 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,412 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,412 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,412 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,412 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,412 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,413 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,413 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,413 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,413 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,413 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,413 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,413 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,413 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,413 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,414 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,414 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,414 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,414 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,414 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,414 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,414 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,414 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,415 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,415 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,415 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,415 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,415 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,415 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,415 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,415 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,415 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,416 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,416 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,416 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,416 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,416 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,416 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,416 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,416 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,417 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,417 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,417 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,417 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,417 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,417 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,417 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,417 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,417 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,418 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,418 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,418 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,418 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,418 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,418 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,418 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,418 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,419 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,424 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,424 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,424 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,425 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,425 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,425 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,425 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,425 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,425 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,425 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,426 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,426 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,426 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,426 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,426 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,426 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,426 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,426 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,427 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,427 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,427 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,427 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,427 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,427 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,427 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,428 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,428 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,430 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,430 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,430 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,431 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,431 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,431 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,431 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,431 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,431 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,432 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,432 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,432 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,432 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,432 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,433 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,433 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,433 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,433 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,434 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,434 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,434 WARN L322 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,434 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,434 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,435 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,435 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~ly~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,435 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,435 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,435 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_~lx~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,435 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,435 WARN L322 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:08:20,438 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-12-06 23:08:20,473 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:08:20,478 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 [2021-12-06 23:08:20,478 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-06 23:08:20,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 112 transitions, 256 flow [2021-12-06 23:08:20,523 INFO L129 PetriNetUnfolder]: 2/108 cut-off events. [2021-12-06 23:08:20,523 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-06 23:08:20,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 108 events. 2/108 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2021-12-06 23:08:20,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 112 transitions, 256 flow [2021-12-06 23:08:20,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 94 transitions, 209 flow [2021-12-06 23:08:20,541 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-12-06 23:08:20,541 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 23:08:20,542 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:08:20,542 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] [2021-12-06 23:08:20,542 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 23:08:20,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:20,546 INFO L85 PathProgramCache]: Analyzing trace with hash 764683200, now seen corresponding path program 1 times [2021-12-06 23:08:20,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:20,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131142211] [2021-12-06 23:08:20,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:20,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:08:20,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:20,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131142211] [2021-12-06 23:08:20,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131142211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:20,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:20,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:20,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744139073] [2021-12-06 23:08:20,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:20,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:20,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:20,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:20,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:20,768 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2021-12-06 23:08:20,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 94 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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) [2021-12-06 23:08:20,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:08:20,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2021-12-06 23:08:20,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:08:21,737 INFO L129 PetriNetUnfolder]: 3826/7989 cut-off events. [2021-12-06 23:08:21,737 INFO L130 PetriNetUnfolder]: For 1855/1855 co-relation queries the response was YES. [2021-12-06 23:08:21,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 7989 events. 3826/7989 cut-off events. For 1855/1855 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 71187 event pairs, 1181 based on Foata normal form. 418/8042 useless extension candidates. Maximal degree in co-relation 13913. Up to 2013 conditions per place. [2021-12-06 23:08:21,803 INFO L132 encePairwiseOnDemand]: 101/112 looper letters, 109 selfloop transitions, 24 changer transitions 4/201 dead transitions. [2021-12-06 23:08:21,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 201 transitions, 769 flow [2021-12-06 23:08:21,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:08:21,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-06 23:08:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 961 transitions. [2021-12-06 23:08:21,816 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8580357142857142 [2021-12-06 23:08:21,817 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 961 transitions. [2021-12-06 23:08:21,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 961 transitions. [2021-12-06 23:08:21,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:08:21,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 961 transitions. [2021-12-06 23:08:21,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.1) internal successors, (961), 10 states have internal predecessors, (961), 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) [2021-12-06 23:08:21,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2021-12-06 23:08:21,834 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2021-12-06 23:08:21,836 INFO L186 Difference]: Start difference. First operand has 105 places, 94 transitions, 209 flow. Second operand 10 states and 961 transitions. [2021-12-06 23:08:21,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 201 transitions, 769 flow [2021-12-06 23:08:21,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 201 transitions, 713 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-12-06 23:08:21,851 INFO L242 Difference]: Finished difference. Result has 115 places, 117 transitions, 367 flow [2021-12-06 23:08:21,853 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=367, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2021-12-06 23:08:21,856 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 10 predicate places. [2021-12-06 23:08:21,856 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 367 flow [2021-12-06 23:08:21,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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) [2021-12-06 23:08:21,856 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:08:21,857 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] [2021-12-06 23:08:21,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:08:21,857 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 23:08:21,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:21,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1416784543, now seen corresponding path program 1 times [2021-12-06 23:08:21,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:21,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689215267] [2021-12-06 23:08:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:21,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:08:21,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:21,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689215267] [2021-12-06 23:08:21,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689215267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:21,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:21,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:08:21,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118955054] [2021-12-06 23:08:21,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:21,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:08:21,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:21,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:08:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:08:21,935 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 112 [2021-12-06 23:08:21,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2021-12-06 23:08:21,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:08:21,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 112 [2021-12-06 23:08:21,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:08:22,148 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_17 (+ (- 1) v_~r~0_18)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][62], [44#writerENTRYtrue, 59#L748-4true, 102#L740true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 71#L740true, 117#L721true, 153#true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse]) [2021-12-06 23:08:22,149 INFO L384 tUnfolder$Statistics]: this new event has 64 ancestors and is cut-off event [2021-12-06 23:08:22,149 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2021-12-06 23:08:22,149 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2021-12-06 23:08:22,149 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2021-12-06 23:08:22,168 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_17 (+ (- 1) v_~r~0_18)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][63], [59#L748-4true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 102#L740true, 71#L740true, 117#L721true, 155#(= ~w~0 1), Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse, 22#L717-1true]) [2021-12-06 23:08:22,168 INFO L384 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2021-12-06 23:08:22,168 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2021-12-06 23:08:22,168 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2021-12-06 23:08:22,168 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2021-12-06 23:08:22,183 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_17 (+ (- 1) v_~r~0_18)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][62], [59#L748-4true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 102#L740true, 71#L740true, 117#L721true, 153#true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse, 93#L721true]) [2021-12-06 23:08:22,183 INFO L384 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2021-12-06 23:08:22,183 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2021-12-06 23:08:22,183 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2021-12-06 23:08:22,183 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2021-12-06 23:08:22,214 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_17 (+ (- 1) v_~r~0_18)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][62], [107#L749-2true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 102#L740true, 71#L740true, 117#L721true, 153#true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse]) [2021-12-06 23:08:22,214 INFO L384 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2021-12-06 23:08:22,214 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2021-12-06 23:08:22,214 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2021-12-06 23:08:22,214 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2021-12-06 23:08:22,241 INFO L129 PetriNetUnfolder]: 878/2829 cut-off events. [2021-12-06 23:08:22,241 INFO L130 PetriNetUnfolder]: For 667/678 co-relation queries the response was YES. [2021-12-06 23:08:22,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5401 conditions, 2829 events. 878/2829 cut-off events. For 667/678 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 25982 event pairs, 289 based on Foata normal form. 125/2826 useless extension candidates. Maximal degree in co-relation 4779. Up to 641 conditions per place. [2021-12-06 23:08:22,274 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 19 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2021-12-06 23:08:22,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 124 transitions, 433 flow [2021-12-06 23:08:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:08:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:08:22,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2021-12-06 23:08:22,277 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-12-06 23:08:22,277 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2021-12-06 23:08:22,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2021-12-06 23:08:22,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:08:22,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2021-12-06 23:08:22,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2021-12-06 23:08:22,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2021-12-06 23:08:22,281 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2021-12-06 23:08:22,281 INFO L186 Difference]: Start difference. First operand has 115 places, 117 transitions, 367 flow. Second operand 3 states and 306 transitions. [2021-12-06 23:08:22,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 124 transitions, 433 flow [2021-12-06 23:08:22,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 124 transitions, 433 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 23:08:22,296 INFO L242 Difference]: Finished difference. Result has 118 places, 117 transitions, 383 flow [2021-12-06 23:08:22,296 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=118, PETRI_TRANSITIONS=117} [2021-12-06 23:08:22,297 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 13 predicate places. [2021-12-06 23:08:22,297 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 117 transitions, 383 flow [2021-12-06 23:08:22,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2021-12-06 23:08:22,298 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:08:22,298 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] [2021-12-06 23:08:22,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:08:22,298 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 23:08:22,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:22,299 INFO L85 PathProgramCache]: Analyzing trace with hash -211743983, now seen corresponding path program 2 times [2021-12-06 23:08:22,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:22,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907290005] [2021-12-06 23:08:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:22,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:08:22,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:22,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907290005] [2021-12-06 23:08:22,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907290005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:22,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:22,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:08:22,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665570890] [2021-12-06 23:08:22,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:22,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:08:22,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:22,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:08:22,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:08:22,400 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 112 [2021-12-06 23:08:22,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 117 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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) [2021-12-06 23:08:22,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:08:22,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 112 [2021-12-06 23:08:22,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:08:22,824 INFO L129 PetriNetUnfolder]: 764/3304 cut-off events. [2021-12-06 23:08:22,824 INFO L130 PetriNetUnfolder]: For 1453/1513 co-relation queries the response was YES. [2021-12-06 23:08:22,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6340 conditions, 3304 events. 764/3304 cut-off events. For 1453/1513 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 34847 event pairs, 48 based on Foata normal form. 67/3219 useless extension candidates. Maximal degree in co-relation 5566. Up to 527 conditions per place. [2021-12-06 23:08:22,855 INFO L132 encePairwiseOnDemand]: 103/112 looper letters, 27 selfloop transitions, 19 changer transitions 2/148 dead transitions. [2021-12-06 23:08:22,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 148 transitions, 585 flow [2021-12-06 23:08:22,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:08:22,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-06 23:08:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 510 transitions. [2021-12-06 23:08:22,857 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-12-06 23:08:22,857 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 510 transitions. [2021-12-06 23:08:22,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 510 transitions. [2021-12-06 23:08:22,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:08:22,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 510 transitions. [2021-12-06 23:08:22,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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) [2021-12-06 23:08:22,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 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) [2021-12-06 23:08:22,861 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 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) [2021-12-06 23:08:22,861 INFO L186 Difference]: Start difference. First operand has 118 places, 117 transitions, 383 flow. Second operand 5 states and 510 transitions. [2021-12-06 23:08:22,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 148 transitions, 585 flow [2021-12-06 23:08:22,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 148 transitions, 565 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 23:08:22,870 INFO L242 Difference]: Finished difference. Result has 120 places, 131 transitions, 461 flow [2021-12-06 23:08:22,870 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=461, PETRI_PLACES=120, PETRI_TRANSITIONS=131} [2021-12-06 23:08:22,871 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 15 predicate places. [2021-12-06 23:08:22,871 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 131 transitions, 461 flow [2021-12-06 23:08:22,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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) [2021-12-06 23:08:22,872 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:08:22,872 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] [2021-12-06 23:08:22,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:08:22,872 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 23:08:22,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:22,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1149119989, now seen corresponding path program 1 times [2021-12-06 23:08:22,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:22,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637315346] [2021-12-06 23:08:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:22,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:08:22,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:22,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637315346] [2021-12-06 23:08:22,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637315346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:22,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:22,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:22,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118181061] [2021-12-06 23:08:22,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:22,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:22,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:22,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:22,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:22,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2021-12-06 23:08:22,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 131 transitions, 461 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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) [2021-12-06 23:08:22,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:08:22,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2021-12-06 23:08:22,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:08:24,284 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_17 (+ (- 1) v_~r~0_18)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][355], [170#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 59#L748-4true, 102#L740true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 71#L740true, 117#L721true, 158#true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse, 93#L721true, Black: 155#(= ~w~0 1)]) [2021-12-06 23:08:24,285 INFO L384 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2021-12-06 23:08:24,285 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2021-12-06 23:08:24,285 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2021-12-06 23:08:24,285 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2021-12-06 23:08:24,554 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_17 (+ (- 1) v_~r~0_18)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][355], [170#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 107#L749-2true, 102#L740true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 71#L740true, 117#L721true, 158#true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse, Black: 155#(= ~w~0 1)]) [2021-12-06 23:08:24,554 INFO L384 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2021-12-06 23:08:24,554 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2021-12-06 23:08:24,554 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2021-12-06 23:08:24,554 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2021-12-06 23:08:24,710 INFO L129 PetriNetUnfolder]: 8503/19148 cut-off events. [2021-12-06 23:08:24,710 INFO L130 PetriNetUnfolder]: For 16779/16826 co-relation queries the response was YES. [2021-12-06 23:08:24,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47526 conditions, 19148 events. 8503/19148 cut-off events. For 16779/16826 co-relation queries the response was YES. Maximal size of possible extension queue 1820. Compared 217059 event pairs, 1734 based on Foata normal form. 13/18572 useless extension candidates. Maximal degree in co-relation 46936. Up to 4078 conditions per place. [2021-12-06 23:08:24,825 INFO L132 encePairwiseOnDemand]: 103/112 looper letters, 193 selfloop transitions, 94 changer transitions 32/387 dead transitions. [2021-12-06 23:08:24,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 387 transitions, 2315 flow [2021-12-06 23:08:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:08:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-06 23:08:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 950 transitions. [2021-12-06 23:08:24,828 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8482142857142857 [2021-12-06 23:08:24,828 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 950 transitions. [2021-12-06 23:08:24,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 950 transitions. [2021-12-06 23:08:24,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:08:24,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 950 transitions. [2021-12-06 23:08:24,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 95.0) internal successors, (950), 10 states have internal predecessors, (950), 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) [2021-12-06 23:08:24,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2021-12-06 23:08:24,833 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2021-12-06 23:08:24,833 INFO L186 Difference]: Start difference. First operand has 120 places, 131 transitions, 461 flow. Second operand 10 states and 950 transitions. [2021-12-06 23:08:24,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 387 transitions, 2315 flow [2021-12-06 23:08:24,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 387 transitions, 2309 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-12-06 23:08:24,939 INFO L242 Difference]: Finished difference. Result has 137 places, 240 transitions, 1484 flow [2021-12-06 23:08:24,939 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1484, PETRI_PLACES=137, PETRI_TRANSITIONS=240} [2021-12-06 23:08:24,940 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 32 predicate places. [2021-12-06 23:08:24,940 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 240 transitions, 1484 flow [2021-12-06 23:08:24,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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) [2021-12-06 23:08:24,940 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:08:24,940 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] [2021-12-06 23:08:24,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:08:24,941 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 23:08:24,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:24,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1910529791, now seen corresponding path program 1 times [2021-12-06 23:08:24,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:24,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646731189] [2021-12-06 23:08:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:24,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:08:24,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:24,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646731189] [2021-12-06 23:08:24,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646731189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:24,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:24,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:24,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346747480] [2021-12-06 23:08:24,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:24,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:24,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:24,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:24,994 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2021-12-06 23:08:24,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 240 transitions, 1484 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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) [2021-12-06 23:08:24,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:08:24,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2021-12-06 23:08:24,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:08:26,648 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([263] L739-2-->L740: Formula: (= v_~r~0_17 (+ (- 1) v_~r~0_18)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][400], [170#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 102#L740true, 158#true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, Black: 155#(= ~w~0 1), 59#L748-4true, 117#L721true, 71#L740true, 197#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), readerThread1of1ForFork3InUse, Black: 172#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 180#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), 93#L721true, Black: 165#true, Black: 176#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 174#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 167#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 178#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|))]) [2021-12-06 23:08:26,648 INFO L384 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2021-12-06 23:08:26,648 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2021-12-06 23:08:26,649 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2021-12-06 23:08:26,649 INFO L387 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2021-12-06 23:08:27,006 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([263] L739-2-->L740: Formula: (= v_~r~0_17 (+ (- 1) v_~r~0_18)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][400], [170#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 107#L749-2true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 102#L740true, 71#L740true, 117#L721true, 197#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 158#true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse, Black: 172#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 180#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 165#true, Black: 176#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 155#(= ~w~0 1), Black: 174#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 167#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 178#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|))]) [2021-12-06 23:08:27,007 INFO L384 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2021-12-06 23:08:27,007 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2021-12-06 23:08:27,007 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2021-12-06 23:08:27,007 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2021-12-06 23:08:27,111 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([263] L739-2-->L740: Formula: (= v_~r~0_17 (+ (- 1) v_~r~0_18)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][400], [170#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 117#L721true, 71#L740true, 197#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 158#true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse, Black: 172#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 180#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 165#true, 45#L750-2true, Black: 176#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 155#(= ~w~0 1), Black: 174#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 167#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 178#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|))]) [2021-12-06 23:08:27,111 INFO L384 tUnfolder$Statistics]: this new event has 79 ancestors and is cut-off event [2021-12-06 23:08:27,111 INFO L387 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2021-12-06 23:08:27,111 INFO L387 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2021-12-06 23:08:27,112 INFO L387 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2021-12-06 23:08:27,150 INFO L129 PetriNetUnfolder]: 8574/19932 cut-off events. [2021-12-06 23:08:27,150 INFO L130 PetriNetUnfolder]: For 32598/32645 co-relation queries the response was YES. [2021-12-06 23:08:27,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59393 conditions, 19932 events. 8574/19932 cut-off events. For 32598/32645 co-relation queries the response was YES. Maximal size of possible extension queue 1948. Compared 230769 event pairs, 1383 based on Foata normal form. 192/19932 useless extension candidates. Maximal degree in co-relation 58742. Up to 3646 conditions per place. [2021-12-06 23:08:27,300 INFO L132 encePairwiseOnDemand]: 103/112 looper letters, 187 selfloop transitions, 131 changer transitions 43/429 dead transitions. [2021-12-06 23:08:27,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 429 transitions, 3375 flow [2021-12-06 23:08:27,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:08:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 23:08:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 849 transitions. [2021-12-06 23:08:27,303 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8422619047619048 [2021-12-06 23:08:27,303 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 849 transitions. [2021-12-06 23:08:27,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 849 transitions. [2021-12-06 23:08:27,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:08:27,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 849 transitions. [2021-12-06 23:08:27,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.33333333333333) internal successors, (849), 9 states have internal predecessors, (849), 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) [2021-12-06 23:08:27,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2021-12-06 23:08:27,309 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2021-12-06 23:08:27,309 INFO L186 Difference]: Start difference. First operand has 137 places, 240 transitions, 1484 flow. Second operand 9 states and 849 transitions. [2021-12-06 23:08:27,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 429 transitions, 3375 flow [2021-12-06 23:08:27,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 429 transitions, 3375 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 23:08:27,628 INFO L242 Difference]: Finished difference. Result has 150 places, 282 transitions, 2293 flow [2021-12-06 23:08:27,628 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2293, PETRI_PLACES=150, PETRI_TRANSITIONS=282} [2021-12-06 23:08:27,629 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 45 predicate places. [2021-12-06 23:08:27,629 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 282 transitions, 2293 flow [2021-12-06 23:08:27,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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) [2021-12-06 23:08:27,629 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:08:27,630 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] [2021-12-06 23:08:27,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:08:27,630 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 23:08:27,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2041915451, now seen corresponding path program 1 times [2021-12-06 23:08:27,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:27,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715890255] [2021-12-06 23:08:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:27,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:08:27,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:27,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715890255] [2021-12-06 23:08:27,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715890255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:27,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:27,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:27,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732490687] [2021-12-06 23:08:27,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:27,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:27,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:27,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:27,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:27,674 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2021-12-06 23:08:27,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 282 transitions, 2293 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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) [2021-12-06 23:08:27,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:08:27,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2021-12-06 23:08:27,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:08:29,303 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_17 (+ (- 1) v_~r~0_18)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][400], [220#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 170#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 161#(or (not (= ~w~0 0)) (not (= ~r~0 0))), 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 102#L740true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 199#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 192#true, Black: 206#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 202#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, Black: 155#(= ~w~0 1), 59#L748-4true, 117#L721true, 197#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 28#L739-2true, Black: 172#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), readerThread1of1ForFork3InUse, Black: 180#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 165#true, 93#L721true, Black: 176#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 174#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 167#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 178#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|))]) [2021-12-06 23:08:29,303 INFO L384 tUnfolder$Statistics]: this new event has 67 ancestors and is cut-off event [2021-12-06 23:08:29,303 INFO L387 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2021-12-06 23:08:29,303 INFO L387 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2021-12-06 23:08:29,303 INFO L387 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2021-12-06 23:08:29,905 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_17 (+ (- 1) v_~r~0_18)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][400], [220#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 170#(= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|), 161#(or (not (= ~w~0 0)) (not (= ~r~0 0))), 107#L749-2true, 102#L740true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 199#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 192#true, Black: 206#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 202#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, Black: 155#(= ~w~0 1), 117#L721true, 197#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 28#L739-2true, Black: 172#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), readerThread1of1ForFork3InUse, Black: 180#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 165#true, Black: 176#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= |readerThread1of1ForFork3_~lx~0#1| |readerThread1of1ForFork3_~ly~0#1|) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 174#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|)), Black: 167#(= ~x~0 |readerThread1of1ForFork3_~l~0#1|), Black: 178#(and (= |readerThread1of1ForFork3_~ly~0#1| ~x~0) (= ~x~0 |readerThread1of1ForFork3_~l~0#1|))]) [2021-12-06 23:08:29,905 INFO L384 tUnfolder$Statistics]: this new event has 73 ancestors and is cut-off event [2021-12-06 23:08:29,905 INFO L387 tUnfolder$Statistics]: existing Event has 73 ancestors and is cut-off event [2021-12-06 23:08:29,905 INFO L387 tUnfolder$Statistics]: existing Event has 73 ancestors and is cut-off event [2021-12-06 23:08:29,905 INFO L387 tUnfolder$Statistics]: existing Event has 73 ancestors and is cut-off event [2021-12-06 23:08:30,197 INFO L129 PetriNetUnfolder]: 9007/21294 cut-off events. [2021-12-06 23:08:30,197 INFO L130 PetriNetUnfolder]: For 48665/48721 co-relation queries the response was YES. [2021-12-06 23:08:30,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66797 conditions, 21294 events. 9007/21294 cut-off events. For 48665/48721 co-relation queries the response was YES. Maximal size of possible extension queue 2126. Compared 254262 event pairs, 1694 based on Foata normal form. 234/21328 useless extension candidates. Maximal degree in co-relation 66035. Up to 4373 conditions per place. [2021-12-06 23:08:30,380 INFO L132 encePairwiseOnDemand]: 103/112 looper letters, 219 selfloop transitions, 163 changer transitions 29/486 dead transitions. [2021-12-06 23:08:30,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 486 transitions, 4497 flow [2021-12-06 23:08:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:08:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 23:08:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 859 transitions. [2021-12-06 23:08:30,383 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8521825396825397 [2021-12-06 23:08:30,383 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 859 transitions. [2021-12-06 23:08:30,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 859 transitions. [2021-12-06 23:08:30,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:08:30,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 859 transitions. [2021-12-06 23:08:30,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 95.44444444444444) internal successors, (859), 9 states have internal predecessors, (859), 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) [2021-12-06 23:08:30,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2021-12-06 23:08:30,388 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2021-12-06 23:08:30,388 INFO L186 Difference]: Start difference. First operand has 150 places, 282 transitions, 2293 flow. Second operand 9 states and 859 transitions. [2021-12-06 23:08:30,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 486 transitions, 4497 flow [2021-12-06 23:08:30,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 486 transitions, 4469 flow, removed 14 selfloop flow, removed 0 redundant places. [2021-12-06 23:08:30,753 INFO L242 Difference]: Finished difference. Result has 163 places, 343 transitions, 3468 flow [2021-12-06 23:08:30,754 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3468, PETRI_PLACES=163, PETRI_TRANSITIONS=343} [2021-12-06 23:08:30,754 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 58 predicate places. [2021-12-06 23:08:30,754 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 343 transitions, 3468 flow [2021-12-06 23:08:30,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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) [2021-12-06 23:08:30,755 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:08:30,755 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] [2021-12-06 23:08:30,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:08:30,755 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 23:08:30,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:30,755 INFO L85 PathProgramCache]: Analyzing trace with hash -861672747, now seen corresponding path program 1 times [2021-12-06 23:08:30,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:30,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750640514] [2021-12-06 23:08:30,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:30,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:08:30,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:30,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750640514] [2021-12-06 23:08:30,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750640514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:30,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:30,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:08:30,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359143887] [2021-12-06 23:08:30,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:30,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:08:30,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:08:30,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:08:30,811 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2021-12-06 23:08:30,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 343 transitions, 3468 flow. Second operand has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 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) [2021-12-06 23:08:30,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:08:30,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2021-12-06 23:08:30,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:08:31,160 INFO L129 PetriNetUnfolder]: 387/2288 cut-off events. [2021-12-06 23:08:31,161 INFO L130 PetriNetUnfolder]: For 4271/4449 co-relation queries the response was YES. [2021-12-06 23:08:31,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6481 conditions, 2288 events. 387/2288 cut-off events. For 4271/4449 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 23045 event pairs, 50 based on Foata normal form. 135/2401 useless extension candidates. Maximal degree in co-relation 6231. Up to 285 conditions per place. [2021-12-06 23:08:31,176 INFO L132 encePairwiseOnDemand]: 105/112 looper letters, 18 selfloop transitions, 9 changer transitions 35/190 dead transitions. [2021-12-06 23:08:31,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 190 transitions, 1296 flow [2021-12-06 23:08:31,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:08:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-06 23:08:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 516 transitions. [2021-12-06 23:08:31,178 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9214285714285714 [2021-12-06 23:08:31,178 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 516 transitions. [2021-12-06 23:08:31,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 516 transitions. [2021-12-06 23:08:31,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:08:31,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 516 transitions. [2021-12-06 23:08:31,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:31,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 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) [2021-12-06 23:08:31,181 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 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) [2021-12-06 23:08:31,181 INFO L186 Difference]: Start difference. First operand has 163 places, 343 transitions, 3468 flow. Second operand 5 states and 516 transitions. [2021-12-06 23:08:31,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 190 transitions, 1296 flow [2021-12-06 23:08:31,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 190 transitions, 1227 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-12-06 23:08:31,203 INFO L242 Difference]: Finished difference. Result has 163 places, 148 transitions, 877 flow [2021-12-06 23:08:31,203 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=877, PETRI_PLACES=163, PETRI_TRANSITIONS=148} [2021-12-06 23:08:31,204 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 58 predicate places. [2021-12-06 23:08:31,204 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 148 transitions, 877 flow [2021-12-06 23:08:31,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 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) [2021-12-06 23:08:31,205 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:08:31,205 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:31,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:08:31,205 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 23:08:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:31,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1358212994, now seen corresponding path program 1 times [2021-12-06 23:08:31,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:31,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290052613] [2021-12-06 23:08:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:31,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:08:31,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:31,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290052613] [2021-12-06 23:08:31,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290052613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:31,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:31,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:08:31,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134066272] [2021-12-06 23:08:31,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:31,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:08:31,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:31,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:08:31,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:08:31,264 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2021-12-06 23:08:31,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 148 transitions, 877 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 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) [2021-12-06 23:08:31,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:08:31,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2021-12-06 23:08:31,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:08:31,374 INFO L129 PetriNetUnfolder]: 78/689 cut-off events. [2021-12-06 23:08:31,374 INFO L130 PetriNetUnfolder]: For 956/959 co-relation queries the response was YES. [2021-12-06 23:08:31,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2003 conditions, 689 events. 78/689 cut-off events. For 956/959 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4693 event pairs, 19 based on Foata normal form. 11/696 useless extension candidates. Maximal degree in co-relation 1975. Up to 81 conditions per place. [2021-12-06 23:08:31,378 INFO L132 encePairwiseOnDemand]: 105/112 looper letters, 0 selfloop transitions, 0 changer transitions 118/118 dead transitions. [2021-12-06 23:08:31,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 118 transitions, 556 flow [2021-12-06 23:08:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:08:31,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-06 23:08:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 505 transitions. [2021-12-06 23:08:31,380 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9017857142857143 [2021-12-06 23:08:31,381 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 505 transitions. [2021-12-06 23:08:31,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 505 transitions. [2021-12-06 23:08:31,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:08:31,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 505 transitions. [2021-12-06 23:08:31,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 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) [2021-12-06 23:08:31,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 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) [2021-12-06 23:08:31,384 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 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) [2021-12-06 23:08:31,384 INFO L186 Difference]: Start difference. First operand has 163 places, 148 transitions, 877 flow. Second operand 5 states and 505 transitions. [2021-12-06 23:08:31,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 118 transitions, 556 flow [2021-12-06 23:08:31,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 118 transitions, 438 flow, removed 12 selfloop flow, removed 26 redundant places. [2021-12-06 23:08:31,389 INFO L242 Difference]: Finished difference. Result has 129 places, 0 transitions, 0 flow [2021-12-06 23:08:31,389 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=129, PETRI_TRANSITIONS=0} [2021-12-06 23:08:31,390 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 24 predicate places. [2021-12-06 23:08:31,390 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 0 transitions, 0 flow [2021-12-06 23:08:31,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 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) [2021-12-06 23:08:31,392 INFO L764 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-12-06 23:08:31,392 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 7 remaining) [2021-12-06 23:08:31,392 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (4 of 7 remaining) [2021-12-06 23:08:31,393 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (3 of 7 remaining) [2021-12-06 23:08:31,393 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (2 of 7 remaining) [2021-12-06 23:08:31,393 INFO L764 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-12-06 23:08:31,393 INFO L764 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-12-06 23:08:31,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:08:31,396 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:31,399 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-06 23:08:31,399 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:08:31,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:08:31 BasicIcfg [2021-12-06 23:08:31,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:08:31,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:08:31,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:08:31,403 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:08:31,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:08:20" (3/4) ... [2021-12-06 23:08:31,405 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 23:08:31,409 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2021-12-06 23:08:31,409 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2021-12-06 23:08:31,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-12-06 23:08:31,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-06 23:08:31,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 23:08:31,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 23:08:31,437 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 23:08:31,437 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:08:31,438 INFO L158 Benchmark]: Toolchain (without parser) took 11821.85ms. Allocated memory was 102.8MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 62.9MB in the beginning and 934.6MB in the end (delta: -871.7MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2021-12-06 23:08:31,438 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory was 80.5MB in the beginning and 80.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:08:31,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.71ms. Allocated memory is still 102.8MB. Free memory was 62.7MB in the beginning and 66.6MB in the end (delta: -3.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-12-06 23:08:31,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.01ms. Allocated memory is still 102.8MB. Free memory was 66.6MB in the beginning and 64.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:08:31,439 INFO L158 Benchmark]: Boogie Preprocessor took 23.96ms. Allocated memory is still 102.8MB. Free memory was 64.6MB in the beginning and 63.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:08:31,440 INFO L158 Benchmark]: RCFGBuilder took 308.90ms. Allocated memory is still 102.8MB. Free memory was 63.2MB in the beginning and 48.7MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-06 23:08:31,440 INFO L158 Benchmark]: TraceAbstraction took 11024.66ms. Allocated memory was 102.8MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 48.5MB in the beginning and 936.7MB in the end (delta: -888.2MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2021-12-06 23:08:31,440 INFO L158 Benchmark]: Witness Printer took 34.82ms. Allocated memory is still 2.1GB. Free memory was 936.7MB in the beginning and 934.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:08:31,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory was 80.5MB in the beginning and 80.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 380.71ms. Allocated memory is still 102.8MB. Free memory was 62.7MB in the beginning and 66.6MB in the end (delta: -3.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.01ms. Allocated memory is still 102.8MB. Free memory was 66.6MB in the beginning and 64.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.96ms. Allocated memory is still 102.8MB. Free memory was 64.6MB in the beginning and 63.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 308.90ms. Allocated memory is still 102.8MB. Free memory was 63.2MB in the beginning and 48.7MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 11024.66ms. Allocated memory was 102.8MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 48.5MB in the beginning and 936.7MB in the end (delta: -888.2MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 34.82ms. Allocated memory is still 2.1GB. Free memory was 936.7MB in the beginning and 934.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 739]: 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, 136 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 442 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 442 mSDsluCounter, 269 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 675 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1315 IncrementalHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 120 mSDtfsCounter, 1315 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3468occurred in iteration=6, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 406 NumberOfCodeBlocks, 406 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 398 ConstructedInterpolants, 0 QuantifiedInterpolants, 700 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! [2021-12-06 23:08:31,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd08026-fb0c-4c1f-9170-eb852b44fabb/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE