./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN --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 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:04:17,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:04:17,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:04:17,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:04:17,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:04:17,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:04:17,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:04:17,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:04:17,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:04:17,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:04:17,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:04:17,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:04:17,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:04:17,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:04:17,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:04:17,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:04:17,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:04:17,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:04:17,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:04:17,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:04:17,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:04:17,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:04:17,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:04:17,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:04:17,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:04:17,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:04:17,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:04:17,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:04:17,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:04:17,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:04:17,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:04:17,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:04:17,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:04:17,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:04:17,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:04:17,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:04:17,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:04:17,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:04:17,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:04:17,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:04:17,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:04:17,943 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:04:17,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:04:17,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:04:17,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:04:17,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:04:17,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:04:17,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:04:17,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:04:17,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:04:17,970 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:04:17,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:04:17,971 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:04:17,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:04:17,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:04:17,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:04:17,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:04:17,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:04:17,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:04:17,973 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:04:17,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:04:17,973 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:04:17,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:04:17,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:04:17,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:04:17,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:04:17,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:04:17,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:04:17,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:04:17,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:04:17,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:04:17,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:04:17,976 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:04:17,976 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:04:17,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:04:17,977 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_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd [2022-11-20 12:04:18,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:04:18,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:04:18,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:04:18,261 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:04:18,262 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:04:18,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2022-11-20 12:04:21,362 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:04:21,631 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:04:21,631 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2022-11-20 12:04:21,649 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/data/a61602ff1/8e5dd41633444170b1c139ac8649f423/FLAG483326c11 [2022-11-20 12:04:21,666 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/data/a61602ff1/8e5dd41633444170b1c139ac8649f423 [2022-11-20 12:04:21,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:04:21,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:04:21,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:04:21,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:04:21,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:04:21,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:21" (1/1) ... [2022-11-20 12:04:21,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d2154c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:21, skipping insertion in model container [2022-11-20 12:04:21,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:21" (1/1) ... [2022-11-20 12:04:21,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:04:21,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:04:21,920 WARN L237 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_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/sv-benchmarks/c/pthread-wmm/rfi000_tso.i[944,957] [2022-11-20 12:04:22,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:04:22,161 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:04:22,174 WARN L237 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_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/sv-benchmarks/c/pthread-wmm/rfi000_tso.i[944,957] [2022-11-20 12:04:22,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:04:22,309 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:04:22,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:22 WrapperNode [2022-11-20 12:04:22,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:04:22,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:04:22,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:04:22,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:04:22,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:22" (1/1) ... [2022-11-20 12:04:22,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:22" (1/1) ... [2022-11-20 12:04:22,417 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 164 [2022-11-20 12:04:22,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:04:22,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:04:22,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:04:22,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:04:22,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:22" (1/1) ... [2022-11-20 12:04:22,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:22" (1/1) ... [2022-11-20 12:04:22,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:22" (1/1) ... [2022-11-20 12:04:22,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:22" (1/1) ... [2022-11-20 12:04:22,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:22" (1/1) ... [2022-11-20 12:04:22,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:22" (1/1) ... [2022-11-20 12:04:22,486 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:22" (1/1) ... [2022-11-20 12:04:22,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:22" (1/1) ... [2022-11-20 12:04:22,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:04:22,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:04:22,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:04:22,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:04:22,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:22" (1/1) ... [2022-11-20 12:04:22,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:04:22,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:22,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:04:22,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:04:22,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:04:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:04:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:04:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:04:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:04:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 12:04:22,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 12:04:22,610 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 12:04:22,611 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 12:04:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:04:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:04:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:04:22,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:04:22,615 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:04:22,833 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:04:22,835 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:04:23,288 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:04:23,584 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:04:23,585 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:04:23,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:04:23 BoogieIcfgContainer [2022-11-20 12:04:23,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:04:23,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:04:23,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:04:23,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:04:23,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:04:21" (1/3) ... [2022-11-20 12:04:23,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704a88ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:04:23, skipping insertion in model container [2022-11-20 12:04:23,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:22" (2/3) ... [2022-11-20 12:04:23,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704a88ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:04:23, skipping insertion in model container [2022-11-20 12:04:23,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:04:23" (3/3) ... [2022-11-20 12:04:23,602 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2022-11-20 12:04:23,612 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:04:23,625 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:04:23,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:04:23,625 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:04:23,700 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 12:04:23,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 97 transitions, 204 flow [2022-11-20 12:04:23,820 INFO L130 PetriNetUnfolder]: 2/95 cut-off events. [2022-11-20 12:04:23,821 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:04:23,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-11-20 12:04:23,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 97 transitions, 204 flow [2022-11-20 12:04:23,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 95 transitions, 196 flow [2022-11-20 12:04:23,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:04:23,849 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@49c864c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:04:23,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 12:04:23,877 INFO L130 PetriNetUnfolder]: 0/58 cut-off events. [2022-11-20 12:04:23,878 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:04:23,878 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:23,879 INFO L209 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] [2022-11-20 12:04:23,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 12:04:23,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:23,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1084110091, now seen corresponding path program 1 times [2022-11-20 12:04:23,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:23,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809957961] [2022-11-20 12:04:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:23,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:24,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:24,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:24,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809957961] [2022-11-20 12:04:24,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809957961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:24,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:24,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:24,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109250296] [2022-11-20 12:04:24,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:24,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:24,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:24,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:24,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:24,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 97 [2022-11-20 12:04:24,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-11-20 12:04:24,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:24,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 97 [2022-11-20 12:04:24,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:24,876 INFO L130 PetriNetUnfolder]: 31/182 cut-off events. [2022-11-20 12:04:24,876 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:04:24,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 182 events. 31/182 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 539 event pairs, 3 based on Foata normal form. 10/181 useless extension candidates. Maximal degree in co-relation 208. Up to 53 conditions per place. [2022-11-20 12:04:24,880 INFO L137 encePairwiseOnDemand]: 92/97 looper letters, 11 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2022-11-20 12:04:24,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 220 flow [2022-11-20 12:04:24,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:24,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:04:24,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2022-11-20 12:04:24,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9175257731958762 [2022-11-20 12:04:24,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2022-11-20 12:04:24,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2022-11-20 12:04:24,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:24,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2022-11-20 12:04:24,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2022-11-20 12:04:24,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2022-11-20 12:04:24,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2022-11-20 12:04:24,929 INFO L175 Difference]: Start difference. First operand has 100 places, 95 transitions, 196 flow. Second operand 3 states and 267 transitions. [2022-11-20 12:04:24,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 220 flow [2022-11-20 12:04:24,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 94 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:04:24,943 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 190 flow [2022-11-20 12:04:24,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2022-11-20 12:04:24,952 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2022-11-20 12:04:24,952 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 190 flow [2022-11-20 12:04:24,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-11-20 12:04:24,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:24,954 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:24,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:04:24,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 12:04:24,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:24,956 INFO L85 PathProgramCache]: Analyzing trace with hash 983920253, now seen corresponding path program 1 times [2022-11-20 12:04:24,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:24,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229478330] [2022-11-20 12:04:24,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:24,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:26,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:26,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229478330] [2022-11-20 12:04:26,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229478330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:26,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:26,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:04:26,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814141988] [2022-11-20 12:04:26,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:26,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:04:26,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:26,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:04:26,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:04:26,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 97 [2022-11-20 12:04:26,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 67.71428571428571) internal successors, (474), 7 states have internal predecessors, (474), 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) [2022-11-20 12:04:26,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:26,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 97 [2022-11-20 12:04:26,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:27,531 INFO L130 PetriNetUnfolder]: 333/1000 cut-off events. [2022-11-20 12:04:27,531 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-20 12:04:27,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1632 conditions, 1000 events. 333/1000 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6117 event pairs, 60 based on Foata normal form. 0/964 useless extension candidates. Maximal degree in co-relation 1574. Up to 155 conditions per place. [2022-11-20 12:04:27,539 INFO L137 encePairwiseOnDemand]: 86/97 looper letters, 31 selfloop transitions, 7 changer transitions 64/156 dead transitions. [2022-11-20 12:04:27,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 156 transitions, 512 flow [2022-11-20 12:04:27,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:04:27,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 12:04:27,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 941 transitions. [2022-11-20 12:04:27,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.746233148295004 [2022-11-20 12:04:27,544 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 941 transitions. [2022-11-20 12:04:27,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 941 transitions. [2022-11-20 12:04:27,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:27,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 941 transitions. [2022-11-20 12:04:27,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.38461538461539) internal successors, (941), 13 states have internal predecessors, (941), 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) [2022-11-20 12:04:27,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2022-11-20 12:04:27,553 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2022-11-20 12:04:27,554 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 190 flow. Second operand 13 states and 941 transitions. [2022-11-20 12:04:27,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 156 transitions, 512 flow [2022-11-20 12:04:27,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 156 transitions, 502 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:04:27,558 INFO L231 Difference]: Finished difference. Result has 120 places, 85 transitions, 250 flow [2022-11-20 12:04:27,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=250, PETRI_PLACES=120, PETRI_TRANSITIONS=85} [2022-11-20 12:04:27,560 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 20 predicate places. [2022-11-20 12:04:27,560 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 85 transitions, 250 flow [2022-11-20 12:04:27,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.71428571428571) internal successors, (474), 7 states have internal predecessors, (474), 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) [2022-11-20 12:04:27,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:27,561 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:27,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:04:27,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 12:04:27,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:27,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1222453058, now seen corresponding path program 1 times [2022-11-20 12:04:27,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:27,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242352965] [2022-11-20 12:04:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:27,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:29,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:29,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242352965] [2022-11-20 12:04:29,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242352965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:29,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:29,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:04:29,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703956625] [2022-11-20 12:04:29,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:29,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:04:29,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:29,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:04:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:04:29,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 97 [2022-11-20 12:04:29,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 85 transitions, 250 flow. Second operand has 14 states, 14 states have (on average 70.42857142857143) internal successors, (986), 14 states have internal predecessors, (986), 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) [2022-11-20 12:04:29,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:29,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 97 [2022-11-20 12:04:29,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:30,005 INFO L130 PetriNetUnfolder]: 117/359 cut-off events. [2022-11-20 12:04:30,005 INFO L131 PetriNetUnfolder]: For 846/994 co-relation queries the response was YES. [2022-11-20 12:04:30,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 359 events. 117/359 cut-off events. For 846/994 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1477 event pairs, 45 based on Foata normal form. 31/372 useless extension candidates. Maximal degree in co-relation 1025. Up to 151 conditions per place. [2022-11-20 12:04:30,010 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 25 selfloop transitions, 14 changer transitions 28/126 dead transitions. [2022-11-20 12:04:30,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 126 transitions, 612 flow [2022-11-20 12:04:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:04:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 12:04:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1233 transitions. [2022-11-20 12:04:30,015 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.747725894481504 [2022-11-20 12:04:30,015 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1233 transitions. [2022-11-20 12:04:30,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1233 transitions. [2022-11-20 12:04:30,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:30,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1233 transitions. [2022-11-20 12:04:30,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 72.52941176470588) internal successors, (1233), 17 states have internal predecessors, (1233), 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) [2022-11-20 12:04:30,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 97.0) internal successors, (1746), 18 states have internal predecessors, (1746), 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) [2022-11-20 12:04:30,025 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 97.0) internal successors, (1746), 18 states have internal predecessors, (1746), 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) [2022-11-20 12:04:30,025 INFO L175 Difference]: Start difference. First operand has 120 places, 85 transitions, 250 flow. Second operand 17 states and 1233 transitions. [2022-11-20 12:04:30,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 126 transitions, 612 flow [2022-11-20 12:04:30,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 126 transitions, 581 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-20 12:04:30,033 INFO L231 Difference]: Finished difference. Result has 123 places, 93 transitions, 333 flow [2022-11-20 12:04:30,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=333, PETRI_PLACES=123, PETRI_TRANSITIONS=93} [2022-11-20 12:04:30,035 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 23 predicate places. [2022-11-20 12:04:30,035 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 93 transitions, 333 flow [2022-11-20 12:04:30,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 70.42857142857143) internal successors, (986), 14 states have internal predecessors, (986), 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) [2022-11-20 12:04:30,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:30,036 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:30,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:04:30,037 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 12:04:30,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:30,038 INFO L85 PathProgramCache]: Analyzing trace with hash 171306142, now seen corresponding path program 1 times [2022-11-20 12:04:30,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:30,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091912038] [2022-11-20 12:04:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:30,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:31,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:31,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091912038] [2022-11-20 12:04:31,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091912038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:31,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:31,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:04:31,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681050892] [2022-11-20 12:04:31,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:31,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:04:31,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:31,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:04:31,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:04:31,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 97 [2022-11-20 12:04:31,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 93 transitions, 333 flow. Second operand has 12 states, 12 states have (on average 70.75) internal successors, (849), 12 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) [2022-11-20 12:04:31,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:31,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 97 [2022-11-20 12:04:31,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:32,414 INFO L130 PetriNetUnfolder]: 96/319 cut-off events. [2022-11-20 12:04:32,415 INFO L131 PetriNetUnfolder]: For 1035/1168 co-relation queries the response was YES. [2022-11-20 12:04:32,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 319 events. 96/319 cut-off events. For 1035/1168 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1217 event pairs, 45 based on Foata normal form. 14/313 useless extension candidates. Maximal degree in co-relation 1016. Up to 156 conditions per place. [2022-11-20 12:04:32,419 INFO L137 encePairwiseOnDemand]: 86/97 looper letters, 36 selfloop transitions, 11 changer transitions 13/119 dead transitions. [2022-11-20 12:04:32,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 119 transitions, 601 flow [2022-11-20 12:04:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:04:32,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 12:04:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 946 transitions. [2022-11-20 12:04:32,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7501982553528945 [2022-11-20 12:04:32,423 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 946 transitions. [2022-11-20 12:04:32,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 946 transitions. [2022-11-20 12:04:32,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:32,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 946 transitions. [2022-11-20 12:04:32,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.76923076923077) internal successors, (946), 13 states have internal predecessors, (946), 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) [2022-11-20 12:04:32,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2022-11-20 12:04:32,431 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2022-11-20 12:04:32,431 INFO L175 Difference]: Start difference. First operand has 123 places, 93 transitions, 333 flow. Second operand 13 states and 946 transitions. [2022-11-20 12:04:32,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 119 transitions, 601 flow [2022-11-20 12:04:32,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 539 flow, removed 26 selfloop flow, removed 14 redundant places. [2022-11-20 12:04:32,440 INFO L231 Difference]: Finished difference. Result has 124 places, 101 transitions, 402 flow [2022-11-20 12:04:32,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=402, PETRI_PLACES=124, PETRI_TRANSITIONS=101} [2022-11-20 12:04:32,442 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 24 predicate places. [2022-11-20 12:04:32,442 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 101 transitions, 402 flow [2022-11-20 12:04:32,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.75) internal successors, (849), 12 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) [2022-11-20 12:04:32,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:32,443 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:32,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:04:32,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 12:04:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:32,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1003389082, now seen corresponding path program 2 times [2022-11-20 12:04:32,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:32,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535124383] [2022-11-20 12:04:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:32,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:34,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:34,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535124383] [2022-11-20 12:04:34,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535124383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:34,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:34,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 12:04:34,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422073091] [2022-11-20 12:04:34,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:34,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:04:34,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:34,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:04:34,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:04:35,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 97 [2022-11-20 12:04:35,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 101 transitions, 402 flow. Second operand has 15 states, 15 states have (on average 68.53333333333333) internal successors, (1028), 15 states have internal predecessors, (1028), 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) [2022-11-20 12:04:35,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:35,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 97 [2022-11-20 12:04:35,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:35,790 INFO L130 PetriNetUnfolder]: 91/307 cut-off events. [2022-11-20 12:04:35,791 INFO L131 PetriNetUnfolder]: For 811/950 co-relation queries the response was YES. [2022-11-20 12:04:35,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 307 events. 91/307 cut-off events. For 811/950 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1124 event pairs, 45 based on Foata normal form. 17/304 useless extension candidates. Maximal degree in co-relation 979. Up to 141 conditions per place. [2022-11-20 12:04:35,795 INFO L137 encePairwiseOnDemand]: 84/97 looper letters, 27 selfloop transitions, 20 changer transitions 13/117 dead transitions. [2022-11-20 12:04:35,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 117 transitions, 638 flow [2022-11-20 12:04:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:04:35,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 12:04:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1122 transitions. [2022-11-20 12:04:35,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7229381443298969 [2022-11-20 12:04:35,801 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1122 transitions. [2022-11-20 12:04:35,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1122 transitions. [2022-11-20 12:04:35,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:35,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1122 transitions. [2022-11-20 12:04:35,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 70.125) internal successors, (1122), 16 states have internal predecessors, (1122), 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) [2022-11-20 12:04:35,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-11-20 12:04:35,810 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-11-20 12:04:35,811 INFO L175 Difference]: Start difference. First operand has 124 places, 101 transitions, 402 flow. Second operand 16 states and 1122 transitions. [2022-11-20 12:04:35,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 117 transitions, 638 flow [2022-11-20 12:04:35,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 117 transitions, 603 flow, removed 12 selfloop flow, removed 6 redundant places. [2022-11-20 12:04:35,821 INFO L231 Difference]: Finished difference. Result has 134 places, 101 transitions, 443 flow [2022-11-20 12:04:35,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=443, PETRI_PLACES=134, PETRI_TRANSITIONS=101} [2022-11-20 12:04:35,825 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 34 predicate places. [2022-11-20 12:04:35,825 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 101 transitions, 443 flow [2022-11-20 12:04:35,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 68.53333333333333) internal successors, (1028), 15 states have internal predecessors, (1028), 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) [2022-11-20 12:04:35,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:35,826 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:35,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:04:35,827 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 12:04:35,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:35,829 INFO L85 PathProgramCache]: Analyzing trace with hash -866513949, now seen corresponding path program 1 times [2022-11-20 12:04:35,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:35,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864012] [2022-11-20 12:04:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:36,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:36,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864012] [2022-11-20 12:04:36,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:36,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:36,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:04:36,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880544769] [2022-11-20 12:04:36,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:36,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:04:36,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:36,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:04:36,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:04:36,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 97 [2022-11-20 12:04:36,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 101 transitions, 443 flow. Second operand has 10 states, 10 states have (on average 70.9) internal successors, (709), 10 states have internal predecessors, (709), 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) [2022-11-20 12:04:36,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:36,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 97 [2022-11-20 12:04:36,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:37,444 INFO L130 PetriNetUnfolder]: 372/847 cut-off events. [2022-11-20 12:04:37,444 INFO L131 PetriNetUnfolder]: For 2365/2386 co-relation queries the response was YES. [2022-11-20 12:04:37,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2779 conditions, 847 events. 372/847 cut-off events. For 2365/2386 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4301 event pairs, 113 based on Foata normal form. 21/835 useless extension candidates. Maximal degree in co-relation 2692. Up to 324 conditions per place. [2022-11-20 12:04:37,454 INFO L137 encePairwiseOnDemand]: 84/97 looper letters, 47 selfloop transitions, 41 changer transitions 5/151 dead transitions. [2022-11-20 12:04:37,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 151 transitions, 832 flow [2022-11-20 12:04:37,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:04:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 12:04:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1185 transitions. [2022-11-20 12:04:37,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7635309278350515 [2022-11-20 12:04:37,459 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1185 transitions. [2022-11-20 12:04:37,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1185 transitions. [2022-11-20 12:04:37,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:37,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1185 transitions. [2022-11-20 12:04:37,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 74.0625) internal successors, (1185), 16 states have internal predecessors, (1185), 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) [2022-11-20 12:04:37,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-11-20 12:04:37,468 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-11-20 12:04:37,468 INFO L175 Difference]: Start difference. First operand has 134 places, 101 transitions, 443 flow. Second operand 16 states and 1185 transitions. [2022-11-20 12:04:37,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 151 transitions, 832 flow [2022-11-20 12:04:37,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 151 transitions, 731 flow, removed 13 selfloop flow, removed 23 redundant places. [2022-11-20 12:04:37,477 INFO L231 Difference]: Finished difference. Result has 126 places, 130 transitions, 610 flow [2022-11-20 12:04:37,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=610, PETRI_PLACES=126, PETRI_TRANSITIONS=130} [2022-11-20 12:04:37,480 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 26 predicate places. [2022-11-20 12:04:37,480 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 130 transitions, 610 flow [2022-11-20 12:04:37,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.9) internal successors, (709), 10 states have internal predecessors, (709), 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) [2022-11-20 12:04:37,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:37,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:37,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:04:37,482 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 12:04:37,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:37,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1402981599, now seen corresponding path program 2 times [2022-11-20 12:04:37,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:37,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793184516] [2022-11-20 12:04:37,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:37,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:37,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:37,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:37,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793184516] [2022-11-20 12:04:37,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793184516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:37,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:37,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:04:37,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304818792] [2022-11-20 12:04:37,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:37,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:37,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:37,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:37,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:04:37,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 97 [2022-11-20 12:04:37,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 130 transitions, 610 flow. Second operand has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2022-11-20 12:04:37,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:37,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 97 [2022-11-20 12:04:37,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:38,196 INFO L130 PetriNetUnfolder]: 233/633 cut-off events. [2022-11-20 12:04:38,196 INFO L131 PetriNetUnfolder]: For 1628/1647 co-relation queries the response was YES. [2022-11-20 12:04:38,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 633 events. 233/633 cut-off events. For 1628/1647 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3212 event pairs, 5 based on Foata normal form. 42/669 useless extension candidates. Maximal degree in co-relation 2020. Up to 127 conditions per place. [2022-11-20 12:04:38,202 INFO L137 encePairwiseOnDemand]: 89/97 looper letters, 40 selfloop transitions, 6 changer transitions 71/184 dead transitions. [2022-11-20 12:04:38,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 184 transitions, 1204 flow [2022-11-20 12:04:38,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:04:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:04:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 736 transitions. [2022-11-20 12:04:38,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.843069873997709 [2022-11-20 12:04:38,207 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 736 transitions. [2022-11-20 12:04:38,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 736 transitions. [2022-11-20 12:04:38,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:38,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 736 transitions. [2022-11-20 12:04:38,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.77777777777777) internal successors, (736), 9 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:38,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2022-11-20 12:04:38,215 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2022-11-20 12:04:38,215 INFO L175 Difference]: Start difference. First operand has 126 places, 130 transitions, 610 flow. Second operand 9 states and 736 transitions. [2022-11-20 12:04:38,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 184 transitions, 1204 flow [2022-11-20 12:04:38,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 184 transitions, 1144 flow, removed 28 selfloop flow, removed 2 redundant places. [2022-11-20 12:04:38,226 INFO L231 Difference]: Finished difference. Result has 135 places, 100 transitions, 413 flow [2022-11-20 12:04:38,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=413, PETRI_PLACES=135, PETRI_TRANSITIONS=100} [2022-11-20 12:04:38,228 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 35 predicate places. [2022-11-20 12:04:38,228 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 100 transitions, 413 flow [2022-11-20 12:04:38,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2022-11-20 12:04:38,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:38,229 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:38,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:04:38,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 12:04:38,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:38,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1300207964, now seen corresponding path program 1 times [2022-11-20 12:04:38,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:38,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807693522] [2022-11-20 12:04:38,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:38,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:42,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:42,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:42,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807693522] [2022-11-20 12:04:42,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807693522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:42,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:42,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:04:42,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667889296] [2022-11-20 12:04:42,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:42,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:04:42,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:04:42,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:04:42,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 97 [2022-11-20 12:04:42,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 100 transitions, 413 flow. Second operand has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 states have internal predecessors, (962), 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) [2022-11-20 12:04:42,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:42,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 97 [2022-11-20 12:04:42,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:43,420 INFO L130 PetriNetUnfolder]: 76/454 cut-off events. [2022-11-20 12:04:43,421 INFO L131 PetriNetUnfolder]: For 1043/1069 co-relation queries the response was YES. [2022-11-20 12:04:43,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 454 events. 76/454 cut-off events. For 1043/1069 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2533 event pairs, 12 based on Foata normal form. 20/459 useless extension candidates. Maximal degree in co-relation 1312. Up to 94 conditions per place. [2022-11-20 12:04:43,426 INFO L137 encePairwiseOnDemand]: 84/97 looper letters, 42 selfloop transitions, 22 changer transitions 13/137 dead transitions. [2022-11-20 12:04:43,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 137 transitions, 800 flow [2022-11-20 12:04:43,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:04:43,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:04:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1065 transitions. [2022-11-20 12:04:43,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7319587628865979 [2022-11-20 12:04:43,430 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1065 transitions. [2022-11-20 12:04:43,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1065 transitions. [2022-11-20 12:04:43,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:43,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1065 transitions. [2022-11-20 12:04:43,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 71.0) internal successors, (1065), 15 states have internal predecessors, (1065), 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) [2022-11-20 12:04:43,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 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) [2022-11-20 12:04:43,444 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 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) [2022-11-20 12:04:43,444 INFO L175 Difference]: Start difference. First operand has 135 places, 100 transitions, 413 flow. Second operand 15 states and 1065 transitions. [2022-11-20 12:04:43,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 137 transitions, 800 flow [2022-11-20 12:04:43,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 137 transitions, 776 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-11-20 12:04:43,461 INFO L231 Difference]: Finished difference. Result has 136 places, 109 transitions, 571 flow [2022-11-20 12:04:43,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=571, PETRI_PLACES=136, PETRI_TRANSITIONS=109} [2022-11-20 12:04:43,464 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 36 predicate places. [2022-11-20 12:04:43,464 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 109 transitions, 571 flow [2022-11-20 12:04:43,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 states have internal predecessors, (962), 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) [2022-11-20 12:04:43,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:43,465 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:43,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:04:43,466 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 12:04:43,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:43,466 INFO L85 PathProgramCache]: Analyzing trace with hash -473925570, now seen corresponding path program 2 times [2022-11-20 12:04:43,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:43,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112145407] [2022-11-20 12:04:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:43,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:46,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:46,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112145407] [2022-11-20 12:04:46,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112145407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:46,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:46,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:04:46,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44199338] [2022-11-20 12:04:46,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:46,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:04:46,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:46,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:04:46,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:04:46,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 97 [2022-11-20 12:04:46,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 109 transitions, 571 flow. Second operand has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 states have internal predecessors, (962), 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) [2022-11-20 12:04:46,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:46,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 97 [2022-11-20 12:04:46,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:48,600 INFO L130 PetriNetUnfolder]: 94/531 cut-off events. [2022-11-20 12:04:48,600 INFO L131 PetriNetUnfolder]: For 2436/2479 co-relation queries the response was YES. [2022-11-20 12:04:48,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 531 events. 94/531 cut-off events. For 2436/2479 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3202 event pairs, 20 based on Foata normal form. 34/544 useless extension candidates. Maximal degree in co-relation 1667. Up to 137 conditions per place. [2022-11-20 12:04:48,606 INFO L137 encePairwiseOnDemand]: 83/97 looper letters, 36 selfloop transitions, 36 changer transitions 13/145 dead transitions. [2022-11-20 12:04:48,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 145 transitions, 1098 flow [2022-11-20 12:04:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:04:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:04:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1263 transitions. [2022-11-20 12:04:48,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7233676975945017 [2022-11-20 12:04:48,613 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1263 transitions. [2022-11-20 12:04:48,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1263 transitions. [2022-11-20 12:04:48,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:48,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1263 transitions. [2022-11-20 12:04:48,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 70.16666666666667) internal successors, (1263), 18 states have internal predecessors, (1263), 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) [2022-11-20 12:04:48,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 97.0) internal successors, (1843), 19 states have internal predecessors, (1843), 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) [2022-11-20 12:04:48,628 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 97.0) internal successors, (1843), 19 states have internal predecessors, (1843), 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) [2022-11-20 12:04:48,628 INFO L175 Difference]: Start difference. First operand has 136 places, 109 transitions, 571 flow. Second operand 18 states and 1263 transitions. [2022-11-20 12:04:48,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 145 transitions, 1098 flow [2022-11-20 12:04:48,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 145 transitions, 1002 flow, removed 40 selfloop flow, removed 11 redundant places. [2022-11-20 12:04:48,637 INFO L231 Difference]: Finished difference. Result has 145 places, 130 transitions, 858 flow [2022-11-20 12:04:48,638 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=858, PETRI_PLACES=145, PETRI_TRANSITIONS=130} [2022-11-20 12:04:48,639 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 45 predicate places. [2022-11-20 12:04:48,639 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 130 transitions, 858 flow [2022-11-20 12:04:48,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 states have internal predecessors, (962), 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) [2022-11-20 12:04:48,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:48,640 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:48,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:04:48,641 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 12:04:48,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:48,641 INFO L85 PathProgramCache]: Analyzing trace with hash 829951004, now seen corresponding path program 3 times [2022-11-20 12:04:48,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:48,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890763631] [2022-11-20 12:04:48,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:48,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:48,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:48,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890763631] [2022-11-20 12:04:48,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890763631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:48,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:48,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:04:48,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470436931] [2022-11-20 12:04:49,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:49,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:04:49,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:49,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:04:49,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:04:49,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 97 [2022-11-20 12:04:49,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 130 transitions, 858 flow. Second operand has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 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) [2022-11-20 12:04:49,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:49,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 97 [2022-11-20 12:04:49,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:49,353 INFO L130 PetriNetUnfolder]: 169/594 cut-off events. [2022-11-20 12:04:49,354 INFO L131 PetriNetUnfolder]: For 2554/2586 co-relation queries the response was YES. [2022-11-20 12:04:49,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 594 events. 169/594 cut-off events. For 2554/2586 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3608 event pairs, 29 based on Foata normal form. 55/646 useless extension candidates. Maximal degree in co-relation 2263. Up to 134 conditions per place. [2022-11-20 12:04:49,359 INFO L137 encePairwiseOnDemand]: 89/97 looper letters, 46 selfloop transitions, 7 changer transitions 49/169 dead transitions. [2022-11-20 12:04:49,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 169 transitions, 1430 flow [2022-11-20 12:04:49,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:04:49,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:04:49,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 790 transitions. [2022-11-20 12:04:49,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8144329896907216 [2022-11-20 12:04:49,362 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 790 transitions. [2022-11-20 12:04:49,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 790 transitions. [2022-11-20 12:04:49,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:49,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 790 transitions. [2022-11-20 12:04:49,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:49,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 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) [2022-11-20 12:04:49,368 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 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) [2022-11-20 12:04:49,368 INFO L175 Difference]: Start difference. First operand has 145 places, 130 transitions, 858 flow. Second operand 10 states and 790 transitions. [2022-11-20 12:04:49,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 169 transitions, 1430 flow [2022-11-20 12:04:49,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 169 transitions, 1189 flow, removed 97 selfloop flow, removed 14 redundant places. [2022-11-20 12:04:49,380 INFO L231 Difference]: Finished difference. Result has 140 places, 114 transitions, 581 flow [2022-11-20 12:04:49,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=581, PETRI_PLACES=140, PETRI_TRANSITIONS=114} [2022-11-20 12:04:49,382 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 40 predicate places. [2022-11-20 12:04:49,382 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 114 transitions, 581 flow [2022-11-20 12:04:49,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 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) [2022-11-20 12:04:49,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:49,383 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:49,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:04:49,383 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 12:04:49,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:49,384 INFO L85 PathProgramCache]: Analyzing trace with hash -396233086, now seen corresponding path program 1 times [2022-11-20 12:04:49,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:49,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318616657] [2022-11-20 12:04:49,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:49,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:50,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:50,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318616657] [2022-11-20 12:04:50,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318616657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:50,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:50,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:04:50,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513972138] [2022-11-20 12:04:50,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:50,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:04:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:04:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:04:50,303 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 97 [2022-11-20 12:04:50,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 114 transitions, 581 flow. Second operand has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 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) [2022-11-20 12:04:50,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:50,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 97 [2022-11-20 12:04:50,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:50,539 INFO L130 PetriNetUnfolder]: 31/221 cut-off events. [2022-11-20 12:04:50,539 INFO L131 PetriNetUnfolder]: For 388/388 co-relation queries the response was YES. [2022-11-20 12:04:50,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 221 events. 31/221 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 736 event pairs, 4 based on Foata normal form. 1/221 useless extension candidates. Maximal degree in co-relation 652. Up to 48 conditions per place. [2022-11-20 12:04:50,541 INFO L137 encePairwiseOnDemand]: 89/97 looper letters, 27 selfloop transitions, 4 changer transitions 46/132 dead transitions. [2022-11-20 12:04:50,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 132 transitions, 853 flow [2022-11-20 12:04:50,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:04:50,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:04:50,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 495 transitions. [2022-11-20 12:04:50,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7290132547864506 [2022-11-20 12:04:50,543 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 495 transitions. [2022-11-20 12:04:50,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 495 transitions. [2022-11-20 12:04:50,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:50,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 495 transitions. [2022-11-20 12:04:50,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.71428571428571) internal successors, (495), 7 states have internal predecessors, (495), 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) [2022-11-20 12:04:50,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 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) [2022-11-20 12:04:50,547 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 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) [2022-11-20 12:04:50,547 INFO L175 Difference]: Start difference. First operand has 140 places, 114 transitions, 581 flow. Second operand 7 states and 495 transitions. [2022-11-20 12:04:50,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 132 transitions, 853 flow [2022-11-20 12:04:50,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 132 transitions, 742 flow, removed 28 selfloop flow, removed 21 redundant places. [2022-11-20 12:04:50,552 INFO L231 Difference]: Finished difference. Result has 125 places, 85 transitions, 269 flow [2022-11-20 12:04:50,553 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=125, PETRI_TRANSITIONS=85} [2022-11-20 12:04:50,553 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 25 predicate places. [2022-11-20 12:04:50,554 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 85 transitions, 269 flow [2022-11-20 12:04:50,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 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) [2022-11-20 12:04:50,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:50,554 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:50,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:04:50,555 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 12:04:50,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:50,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1392346156, now seen corresponding path program 2 times [2022-11-20 12:04:50,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:50,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419106049] [2022-11-20 12:04:50,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:50,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:53,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:53,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419106049] [2022-11-20 12:04:53,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419106049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:53,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:53,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-20 12:04:53,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806147573] [2022-11-20 12:04:53,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:53,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:04:53,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:53,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:04:53,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:04:53,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 97 [2022-11-20 12:04:53,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 85 transitions, 269 flow. Second operand has 16 states, 16 states have (on average 67.625) internal successors, (1082), 16 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:53,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:53,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 97 [2022-11-20 12:04:53,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:54,287 INFO L130 PetriNetUnfolder]: 5/93 cut-off events. [2022-11-20 12:04:54,287 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-20 12:04:54,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 93 events. 5/93 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 1 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 191. Up to 8 conditions per place. [2022-11-20 12:04:54,288 INFO L137 encePairwiseOnDemand]: 85/97 looper letters, 0 selfloop transitions, 0 changer transitions 84/84 dead transitions. [2022-11-20 12:04:54,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 84 transitions, 325 flow [2022-11-20 12:04:54,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:04:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 12:04:54,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 886 transitions. [2022-11-20 12:04:54,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7026169706582077 [2022-11-20 12:04:54,291 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 886 transitions. [2022-11-20 12:04:54,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 886 transitions. [2022-11-20 12:04:54,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:54,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 886 transitions. [2022-11-20 12:04:54,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.15384615384616) internal successors, (886), 13 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:54,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2022-11-20 12:04:54,301 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2022-11-20 12:04:54,301 INFO L175 Difference]: Start difference. First operand has 125 places, 85 transitions, 269 flow. Second operand 13 states and 886 transitions. [2022-11-20 12:04:54,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 84 transitions, 325 flow [2022-11-20 12:04:54,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 84 transitions, 266 flow, removed 14 selfloop flow, removed 19 redundant places. [2022-11-20 12:04:54,304 INFO L231 Difference]: Finished difference. Result has 104 places, 0 transitions, 0 flow [2022-11-20 12:04:54,304 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=104, PETRI_TRANSITIONS=0} [2022-11-20 12:04:54,305 INFO L288 CegarLoopForPetriNet]: 100 programPoint places, 4 predicate places. [2022-11-20 12:04:54,305 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 0 transitions, 0 flow [2022-11-20 12:04:54,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 67.625) internal successors, (1082), 16 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:54,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-20 12:04:54,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-20 12:04:54,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-20 12:04:54,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-20 12:04:54,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-20 12:04:54,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:04:54,311 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1] [2022-11-20 12:04:54,317 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:04:54,317 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:04:54,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:04:54 BasicIcfg [2022-11-20 12:04:54,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:04:54,323 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:04:54,323 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:04:54,323 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:04:54,324 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:04:23" (3/4) ... [2022-11-20 12:04:54,327 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:04:54,333 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-20 12:04:54,333 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-20 12:04:54,338 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2022-11-20 12:04:54,338 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-20 12:04:54,339 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:04:54,339 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:04:54,395 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:04:54,395 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:04:54,396 INFO L158 Benchmark]: Toolchain (without parser) took 32725.00ms. Allocated memory was 184.5MB in the beginning and 587.2MB in the end (delta: 402.7MB). Free memory was 136.0MB in the beginning and 504.0MB in the end (delta: -368.0MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2022-11-20 12:04:54,396 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 151.0MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:04:54,396 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.71ms. Allocated memory is still 184.5MB. Free memory was 136.0MB in the beginning and 110.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-20 12:04:54,397 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.59ms. Allocated memory is still 184.5MB. Free memory was 110.9MB in the beginning and 107.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:04:54,397 INFO L158 Benchmark]: Boogie Preprocessor took 71.60ms. Allocated memory is still 184.5MB. Free memory was 107.9MB in the beginning and 105.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:04:54,398 INFO L158 Benchmark]: RCFGBuilder took 1094.55ms. Allocated memory is still 184.5MB. Free memory was 105.8MB in the beginning and 132.2MB in the end (delta: -26.4MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. [2022-11-20 12:04:54,398 INFO L158 Benchmark]: TraceAbstraction took 30730.72ms. Allocated memory was 184.5MB in the beginning and 587.2MB in the end (delta: 402.7MB). Free memory was 131.1MB in the beginning and 507.2MB in the end (delta: -376.1MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2022-11-20 12:04:54,399 INFO L158 Benchmark]: Witness Printer took 72.21ms. Allocated memory is still 587.2MB. Free memory was 507.2MB in the beginning and 504.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:04:54,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 151.0MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.71ms. Allocated memory is still 184.5MB. Free memory was 136.0MB in the beginning and 110.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 107.59ms. Allocated memory is still 184.5MB. Free memory was 110.9MB in the beginning and 107.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.60ms. Allocated memory is still 184.5MB. Free memory was 107.9MB in the beginning and 105.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1094.55ms. Allocated memory is still 184.5MB. Free memory was 105.8MB in the beginning and 132.2MB in the end (delta: -26.4MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. * TraceAbstraction took 30730.72ms. Allocated memory was 184.5MB in the beginning and 587.2MB in the end (delta: 402.7MB). Free memory was 131.1MB in the beginning and 507.2MB in the end (delta: -376.1MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * Witness Printer took 72.21ms. Allocated memory is still 587.2MB. Free memory was 507.2MB in the beginning and 504.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 117 locations, 5 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: 30.6s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 585 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 585 mSDsluCounter, 835 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 674 mSDsCounter, 143 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1697 IncrementalHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 143 mSolverCounterUnsat, 161 mSDtfsCounter, 1697 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=858occurred in iteration=9, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 20.5s InterpolantComputationTime, 836 NumberOfCodeBlocks, 836 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 824 ConstructedInterpolants, 0 QuantifiedInterpolants, 7010 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 12:04:54,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a82beae1-aacd-4bea-94c0-b6c70f9d4d22/bin/uautomizer-ug76WZFUDN/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