./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8 --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 ed015c7abb1e633204d95cacfb8444fc40c913627602030095cae55094cd4434 --- 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-2329fc7 [2022-12-13 15:43:00,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:43:00,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:43:00,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:43:00,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:43:00,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:43:00,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:43:00,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:43:00,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:43:00,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:43:00,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:43:00,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:43:00,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:43:00,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:43:00,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:43:00,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:43:00,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:43:00,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:43:00,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:43:00,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:43:00,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:43:00,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:43:00,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:43:00,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:43:00,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:43:00,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:43:00,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:43:00,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:43:00,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:43:00,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:43:00,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:43:00,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:43:00,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:43:00,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:43:00,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:43:00,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:43:00,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:43:00,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:43:00,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:43:00,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:43:00,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:43:00,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:43:00,658 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:43:00,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:43:00,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:43:00,658 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:43:00,659 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:43:00,659 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:43:00,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:43:00,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:43:00,659 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:43:00,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:43:00,660 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:43:00,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:43:00,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:43:00,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:43:00,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:43:00,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:43:00,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:43:00,660 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:43:00,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:43:00,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:43:00,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:43:00,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:43:00,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:43:00,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:43:00,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:43:00,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:43:00,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:43:00,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:43:00,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:43:00,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:43:00,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:43:00,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:43:00,662 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:43:00,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:43:00,662 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:43:00,662 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed015c7abb1e633204d95cacfb8444fc40c913627602030095cae55094cd4434 [2022-12-13 15:43:00,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:43:00,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:43:00,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:43:00,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:43:00,848 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:43:00,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2022-12-13 15:43:03,523 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:43:03,722 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:43:03,723 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/sv-benchmarks/c/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2022-12-13 15:43:03,734 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/data/936573a76/f5407987cab14a4582bf4344f12aa5b8/FLAG19a3ecc5c [2022-12-13 15:43:03,747 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/data/936573a76/f5407987cab14a4582bf4344f12aa5b8 [2022-12-13 15:43:03,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:43:03,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:43:03,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:43:03,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:43:03,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:43:03,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:43:03" (1/1) ... [2022-12-13 15:43:03,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f03e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:03, skipping insertion in model container [2022-12-13 15:43:03,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:43:03" (1/1) ... [2022-12-13 15:43:03,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:43:03,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:43:03,902 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_829b8121-196d-4296-a9ec-13a09c47177a/sv-benchmarks/c/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i[966,979] [2022-12-13 15:43:03,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:03,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:03,998 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:03,998 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:03,998 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:43:04,031 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:43:04,041 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_829b8121-196d-4296-a9ec-13a09c47177a/sv-benchmarks/c/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i[966,979] [2022-12-13 15:43:04,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,069 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,069 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,069 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,071 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,071 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,071 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,071 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,075 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,075 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,075 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,078 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:43:04,089 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:43:04,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:43:04,131 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:43:04,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:04 WrapperNode [2022-12-13 15:43:04,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:43:04,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:43:04,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:43:04,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:43:04,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:04" (1/1) ... [2022-12-13 15:43:04,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:04" (1/1) ... [2022-12-13 15:43:04,177 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 134 [2022-12-13 15:43:04,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:43:04,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:43:04,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:43:04,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:43:04,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:04" (1/1) ... [2022-12-13 15:43:04,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:04" (1/1) ... [2022-12-13 15:43:04,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:04" (1/1) ... [2022-12-13 15:43:04,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:04" (1/1) ... [2022-12-13 15:43:04,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:04" (1/1) ... [2022-12-13 15:43:04,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:04" (1/1) ... [2022-12-13 15:43:04,204 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:04" (1/1) ... [2022-12-13 15:43:04,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:04" (1/1) ... [2022-12-13 15:43:04,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:43:04,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:43:04,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:43:04,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:43:04,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:04" (1/1) ... [2022-12-13 15:43:04,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:43:04,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:43:04,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:43:04,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:43:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:43:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 15:43:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:43:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:43:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:43:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 15:43:04,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 15:43:04,273 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 15:43:04,273 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 15:43:04,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:43:04,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 15:43:04,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:43:04,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:43:04,274 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 15:43:04,391 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:43:04,393 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:43:04,633 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:43:04,708 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:43:04,709 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 15:43:04,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:43:04 BoogieIcfgContainer [2022-12-13 15:43:04,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:43:04,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:43:04,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:43:04,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:43:04,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:43:03" (1/3) ... [2022-12-13 15:43:04,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cad52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:43:04, skipping insertion in model container [2022-12-13 15:43:04,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:43:04" (2/3) ... [2022-12-13 15:43:04,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cad52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:43:04, skipping insertion in model container [2022-12-13 15:43:04,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:43:04" (3/3) ... [2022-12-13 15:43:04,719 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.opt_pso.opt_rmo.opt.i [2022-12-13 15:43:04,726 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:43:04,734 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:43:04,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 15:43:04,735 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:43:04,773 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:43:04,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 97 transitions, 204 flow [2022-12-13 15:43:04,825 INFO L130 PetriNetUnfolder]: 2/95 cut-off events. [2022-12-13 15:43:04,825 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:43:04,828 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 47 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. [2022-12-13 15:43:04,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 97 transitions, 204 flow [2022-12-13 15:43:04,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 95 transitions, 196 flow [2022-12-13 15:43:04,833 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:43:04,841 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 95 transitions, 196 flow [2022-12-13 15:43:04,842 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 95 transitions, 196 flow [2022-12-13 15:43:04,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 95 transitions, 196 flow [2022-12-13 15:43:04,858 INFO L130 PetriNetUnfolder]: 2/95 cut-off events. [2022-12-13 15:43:04,858 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:43:04,859 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 47 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. [2022-12-13 15:43:04,860 INFO L119 LiptonReduction]: Number of co-enabled transitions 1292 [2022-12-13 15:43:07,284 INFO L134 LiptonReduction]: Checked pairs total: 3660 [2022-12-13 15:43:07,284 INFO L136 LiptonReduction]: Total number of compositions: 86 [2022-12-13 15:43:07,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:43:07,299 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;@1defeae8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:43:07,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 15:43:07,301 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 15:43:07,301 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:43:07,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:43:07,302 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:43:07,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 15:43:07,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:07,306 INFO L85 PathProgramCache]: Analyzing trace with hash 410579147, now seen corresponding path program 1 times [2022-12-13 15:43:07,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:07,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132343121] [2022-12-13 15:43:07,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:07,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:43:07,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:43:07,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132343121] [2022-12-13 15:43:07,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132343121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:43:07,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:43:07,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:43:07,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701546063] [2022-12-13 15:43:07,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:43:07,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:43:07,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:43:07,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:43:07,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:43:07,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 183 [2022-12-13 15:43:07,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2022-12-13 15:43:07,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:43:07,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 183 [2022-12-13 15:43:07,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:43:07,777 INFO L130 PetriNetUnfolder]: 159/366 cut-off events. [2022-12-13 15:43:07,777 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 15:43:07,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 366 events. 159/366 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1788 event pairs, 24 based on Foata normal form. 16/349 useless extension candidates. Maximal degree in co-relation 650. Up to 220 conditions per place. [2022-12-13 15:43:07,780 INFO L137 encePairwiseOnDemand]: 179/183 looper letters, 19 selfloop transitions, 2 changer transitions 4/29 dead transitions. [2022-12-13 15:43:07,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 114 flow [2022-12-13 15:43:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:43:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:43:07,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2022-12-13 15:43:07,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5154826958105647 [2022-12-13 15:43:07,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2022-12-13 15:43:07,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2022-12-13 15:43:07,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:43:07,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2022-12-13 15:43:07,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2022-12-13 15:43:07,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-12-13 15:43:07,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-12-13 15:43:07,801 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 3 states and 283 transitions. [2022-12-13 15:43:07,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 114 flow [2022-12-13 15:43:07,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:43:07,804 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 44 flow [2022-12-13 15:43:07,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2022-12-13 15:43:07,808 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2022-12-13 15:43:07,808 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 44 flow [2022-12-13 15:43:07,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2022-12-13 15:43:07,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:43:07,808 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:43:07,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:43:07,809 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)] === [2022-12-13 15:43:07,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:07,809 INFO L85 PathProgramCache]: Analyzing trace with hash -501299883, now seen corresponding path program 1 times [2022-12-13 15:43:07,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:07,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77529533] [2022-12-13 15:43:07,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:07,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:43:08,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:43:08,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77529533] [2022-12-13 15:43:08,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77529533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:43:08,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:43:08,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:43:08,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242236476] [2022-12-13 15:43:08,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:43:08,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:43:08,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:43:08,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:43:08,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:43:08,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 183 [2022-12-13 15:43:08,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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) [2022-12-13 15:43:08,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:43:08,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 183 [2022-12-13 15:43:08,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:43:08,479 INFO L130 PetriNetUnfolder]: 299/552 cut-off events. [2022-12-13 15:43:08,479 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-13 15:43:08,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1121 conditions, 552 events. 299/552 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2513 event pairs, 62 based on Foata normal form. 37/589 useless extension candidates. Maximal degree in co-relation 1111. Up to 319 conditions per place. [2022-12-13 15:43:08,483 INFO L137 encePairwiseOnDemand]: 173/183 looper letters, 23 selfloop transitions, 10 changer transitions 20/54 dead transitions. [2022-12-13 15:43:08,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 230 flow [2022-12-13 15:43:08,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:43:08,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:43:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 574 transitions. [2022-12-13 15:43:08,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44808743169398907 [2022-12-13 15:43:08,486 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 574 transitions. [2022-12-13 15:43:08,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 574 transitions. [2022-12-13 15:43:08,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:43:08,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 574 transitions. [2022-12-13 15:43:08,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:43:08,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 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) [2022-12-13 15:43:08,491 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 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) [2022-12-13 15:43:08,491 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 44 flow. Second operand 7 states and 574 transitions. [2022-12-13 15:43:08,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 230 flow [2022-12-13 15:43:08,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:43:08,492 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 126 flow [2022-12-13 15:43:08,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=126, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2022-12-13 15:43:08,492 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2022-12-13 15:43:08,493 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 126 flow [2022-12-13 15:43:08,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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) [2022-12-13 15:43:08,493 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:43:08,493 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:43:08,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:43:08,493 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)] === [2022-12-13 15:43:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:08,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1639574966, now seen corresponding path program 1 times [2022-12-13 15:43:08,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:08,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111771670] [2022-12-13 15:43:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:08,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:43:08,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:43:08,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111771670] [2022-12-13 15:43:08,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111771670] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:43:08,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:43:08,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:43:08,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082154089] [2022-12-13 15:43:08,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:43:08,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:43:08,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:43:08,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:43:08,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:43:08,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 183 [2022-12-13 15:43:08,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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) [2022-12-13 15:43:08,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:43:08,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 183 [2022-12-13 15:43:08,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:43:08,747 INFO L130 PetriNetUnfolder]: 217/418 cut-off events. [2022-12-13 15:43:08,747 INFO L131 PetriNetUnfolder]: For 540/548 co-relation queries the response was YES. [2022-12-13 15:43:08,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 418 events. 217/418 cut-off events. For 540/548 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1820 event pairs, 42 based on Foata normal form. 40/453 useless extension candidates. Maximal degree in co-relation 1335. Up to 228 conditions per place. [2022-12-13 15:43:08,749 INFO L137 encePairwiseOnDemand]: 179/183 looper letters, 26 selfloop transitions, 3 changer transitions 16/50 dead transitions. [2022-12-13 15:43:08,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 328 flow [2022-12-13 15:43:08,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:43:08,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:43:08,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2022-12-13 15:43:08,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4896174863387978 [2022-12-13 15:43:08,751 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2022-12-13 15:43:08,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2022-12-13 15:43:08,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:43:08,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2022-12-13 15:43:08,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:43:08,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 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) [2022-12-13 15:43:08,754 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 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) [2022-12-13 15:43:08,754 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 126 flow. Second operand 5 states and 448 transitions. [2022-12-13 15:43:08,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 328 flow [2022-12-13 15:43:08,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 322 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 15:43:08,756 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 137 flow [2022-12-13 15:43:08,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2022-12-13 15:43:08,757 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 10 predicate places. [2022-12-13 15:43:08,757 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 137 flow [2022-12-13 15:43:08,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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) [2022-12-13 15:43:08,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:43:08,757 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:43:08,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:43:08,758 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)] === [2022-12-13 15:43:08,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:08,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1537231074, now seen corresponding path program 1 times [2022-12-13 15:43:08,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:08,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458003595] [2022-12-13 15:43:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:08,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:43:09,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:43:09,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458003595] [2022-12-13 15:43:09,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458003595] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:43:09,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:43:09,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:43:09,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521916406] [2022-12-13 15:43:09,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:43:09,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:43:09,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:43:09,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:43:09,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:43:09,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 183 [2022-12-13 15:43:09,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:43:09,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:43:09,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 183 [2022-12-13 15:43:09,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:43:09,287 INFO L130 PetriNetUnfolder]: 201/376 cut-off events. [2022-12-13 15:43:09,288 INFO L131 PetriNetUnfolder]: For 504/504 co-relation queries the response was YES. [2022-12-13 15:43:09,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 376 events. 201/376 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1489 event pairs, 61 based on Foata normal form. 19/394 useless extension candidates. Maximal degree in co-relation 1258. Up to 156 conditions per place. [2022-12-13 15:43:09,291 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 28 selfloop transitions, 7 changer transitions 14/50 dead transitions. [2022-12-13 15:43:09,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 341 flow [2022-12-13 15:43:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:43:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:43:09,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 563 transitions. [2022-12-13 15:43:09,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43950039032006244 [2022-12-13 15:43:09,293 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 563 transitions. [2022-12-13 15:43:09,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 563 transitions. [2022-12-13 15:43:09,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:43:09,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 563 transitions. [2022-12-13 15:43:09,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.42857142857143) internal successors, (563), 7 states have internal predecessors, (563), 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) [2022-12-13 15:43:09,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 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) [2022-12-13 15:43:09,299 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 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) [2022-12-13 15:43:09,299 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 137 flow. Second operand 7 states and 563 transitions. [2022-12-13 15:43:09,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 341 flow [2022-12-13 15:43:09,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 50 transitions, 320 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-12-13 15:43:09,303 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 177 flow [2022-12-13 15:43:09,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=177, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2022-12-13 15:43:09,303 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 13 predicate places. [2022-12-13 15:43:09,304 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 177 flow [2022-12-13 15:43:09,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:43:09,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:43:09,304 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:43:09,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:43:09,305 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)] === [2022-12-13 15:43:09,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:09,305 INFO L85 PathProgramCache]: Analyzing trace with hash 411095467, now seen corresponding path program 1 times [2022-12-13 15:43:09,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:09,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721738637] [2022-12-13 15:43:09,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:09,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:43:09,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:43:09,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721738637] [2022-12-13 15:43:09,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721738637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:43:09,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:43:09,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:43:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138580738] [2022-12-13 15:43:09,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:43:09,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:43:09,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:43:09,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:43:09,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:43:09,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 183 [2022-12-13 15:43:09,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 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) [2022-12-13 15:43:09,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:43:09,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 183 [2022-12-13 15:43:09,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:43:09,850 INFO L130 PetriNetUnfolder]: 260/492 cut-off events. [2022-12-13 15:43:09,850 INFO L131 PetriNetUnfolder]: For 681/681 co-relation queries the response was YES. [2022-12-13 15:43:09,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 492 events. 260/492 cut-off events. For 681/681 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2168 event pairs, 62 based on Foata normal form. 21/513 useless extension candidates. Maximal degree in co-relation 1747. Up to 217 conditions per place. [2022-12-13 15:43:09,852 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 26 selfloop transitions, 14 changer transitions 19/60 dead transitions. [2022-12-13 15:43:09,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 60 transitions, 452 flow [2022-12-13 15:43:09,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:43:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:43:09,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 492 transitions. [2022-12-13 15:43:09,853 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44808743169398907 [2022-12-13 15:43:09,853 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 492 transitions. [2022-12-13 15:43:09,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 492 transitions. [2022-12-13 15:43:09,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:43:09,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 492 transitions. [2022-12-13 15:43:09,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2022-12-13 15:43:09,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-12-13 15:43:09,862 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-12-13 15:43:09,862 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 177 flow. Second operand 6 states and 492 transitions. [2022-12-13 15:43:09,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 60 transitions, 452 flow [2022-12-13 15:43:09,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 60 transitions, 419 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-12-13 15:43:09,868 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 264 flow [2022-12-13 15:43:09,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=264, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2022-12-13 15:43:09,869 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 14 predicate places. [2022-12-13 15:43:09,870 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 264 flow [2022-12-13 15:43:09,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 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) [2022-12-13 15:43:09,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:43:09,870 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:43:09,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:43:09,871 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)] === [2022-12-13 15:43:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:09,871 INFO L85 PathProgramCache]: Analyzing trace with hash -137999596, now seen corresponding path program 1 times [2022-12-13 15:43:09,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:09,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852272100] [2022-12-13 15:43:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:09,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:10,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:43:10,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:43:10,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852272100] [2022-12-13 15:43:10,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852272100] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:43:10,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:43:10,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:43:10,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013405189] [2022-12-13 15:43:10,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:43:10,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:43:10,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:43:10,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:43:10,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:43:10,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 183 [2022-12-13 15:43:10,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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) [2022-12-13 15:43:10,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:43:10,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 183 [2022-12-13 15:43:10,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:43:10,288 INFO L130 PetriNetUnfolder]: 144/277 cut-off events. [2022-12-13 15:43:10,288 INFO L131 PetriNetUnfolder]: For 645/664 co-relation queries the response was YES. [2022-12-13 15:43:10,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 277 events. 144/277 cut-off events. For 645/664 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1013 event pairs, 37 based on Foata normal form. 31/308 useless extension candidates. Maximal degree in co-relation 1073. Up to 197 conditions per place. [2022-12-13 15:43:10,289 INFO L137 encePairwiseOnDemand]: 177/183 looper letters, 29 selfloop transitions, 7 changer transitions 8/51 dead transitions. [2022-12-13 15:43:10,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 448 flow [2022-12-13 15:43:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:43:10,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:43:10,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 524 transitions. [2022-12-13 15:43:10,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4772313296903461 [2022-12-13 15:43:10,291 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 524 transitions. [2022-12-13 15:43:10,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 524 transitions. [2022-12-13 15:43:10,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:43:10,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 524 transitions. [2022-12-13 15:43:10,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.33333333333333) internal successors, (524), 6 states have internal predecessors, (524), 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) [2022-12-13 15:43:10,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-12-13 15:43:10,293 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-12-13 15:43:10,293 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 264 flow. Second operand 6 states and 524 transitions. [2022-12-13 15:43:10,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 448 flow [2022-12-13 15:43:10,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 437 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 15:43:10,295 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 310 flow [2022-12-13 15:43:10,296 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2022-12-13 15:43:10,296 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2022-12-13 15:43:10,296 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 310 flow [2022-12-13 15:43:10,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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) [2022-12-13 15:43:10,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:43:10,296 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:43:10,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:43:10,297 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)] === [2022-12-13 15:43:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:10,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1241348830, now seen corresponding path program 1 times [2022-12-13 15:43:10,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:10,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539549152] [2022-12-13 15:43:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:10,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:43:10,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:43:10,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539549152] [2022-12-13 15:43:10,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539549152] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:43:10,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:43:10,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:43:10,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948313074] [2022-12-13 15:43:10,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:43:10,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:43:10,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:43:10,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:43:10,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:43:10,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 183 [2022-12-13 15:43:10,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 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) [2022-12-13 15:43:10,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:43:10,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 183 [2022-12-13 15:43:10,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:43:10,601 INFO L130 PetriNetUnfolder]: 184/350 cut-off events. [2022-12-13 15:43:10,601 INFO L131 PetriNetUnfolder]: For 785/793 co-relation queries the response was YES. [2022-12-13 15:43:10,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 350 events. 184/350 cut-off events. For 785/793 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1398 event pairs, 43 based on Foata normal form. 19/369 useless extension candidates. Maximal degree in co-relation 1457. Up to 160 conditions per place. [2022-12-13 15:43:10,602 INFO L137 encePairwiseOnDemand]: 179/183 looper letters, 26 selfloop transitions, 2 changer transitions 22/54 dead transitions. [2022-12-13 15:43:10,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 501 flow [2022-12-13 15:43:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:43:10,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:43:10,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2022-12-13 15:43:10,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.473224043715847 [2022-12-13 15:43:10,604 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2022-12-13 15:43:10,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2022-12-13 15:43:10,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:43:10,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2022-12-13 15:43:10,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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) [2022-12-13 15:43:10,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 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) [2022-12-13 15:43:10,606 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 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) [2022-12-13 15:43:10,606 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 310 flow. Second operand 5 states and 433 transitions. [2022-12-13 15:43:10,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 501 flow [2022-12-13 15:43:10,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 483 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 15:43:10,608 INFO L231 Difference]: Finished difference. Result has 46 places, 28 transitions, 200 flow [2022-12-13 15:43:10,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=46, PETRI_TRANSITIONS=28} [2022-12-13 15:43:10,609 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 18 predicate places. [2022-12-13 15:43:10,609 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 28 transitions, 200 flow [2022-12-13 15:43:10,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 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) [2022-12-13 15:43:10,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:43:10,609 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:43:10,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:43:10,610 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)] === [2022-12-13 15:43:10,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:10,610 INFO L85 PathProgramCache]: Analyzing trace with hash -561125535, now seen corresponding path program 1 times [2022-12-13 15:43:10,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:10,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139368625] [2022-12-13 15:43:10,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:10,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:43:10,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:43:10,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139368625] [2022-12-13 15:43:10,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139368625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:43:10,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:43:10,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:43:10,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865887740] [2022-12-13 15:43:10,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:43:10,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:43:10,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:43:10,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:43:10,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:43:10,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 183 [2022-12-13 15:43:10,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 28 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 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) [2022-12-13 15:43:10,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:43:10,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 183 [2022-12-13 15:43:10,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:43:11,111 INFO L130 PetriNetUnfolder]: 106/219 cut-off events. [2022-12-13 15:43:11,111 INFO L131 PetriNetUnfolder]: For 587/587 co-relation queries the response was YES. [2022-12-13 15:43:11,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 219 events. 106/219 cut-off events. For 587/587 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 746 event pairs, 40 based on Foata normal form. 9/228 useless extension candidates. Maximal degree in co-relation 863. Up to 162 conditions per place. [2022-12-13 15:43:11,112 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 22 selfloop transitions, 8 changer transitions 5/40 dead transitions. [2022-12-13 15:43:11,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 338 flow [2022-12-13 15:43:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:43:11,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:43:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 509 transitions. [2022-12-13 15:43:11,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46357012750455373 [2022-12-13 15:43:11,113 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 509 transitions. [2022-12-13 15:43:11,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 509 transitions. [2022-12-13 15:43:11,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:43:11,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 509 transitions. [2022-12-13 15:43:11,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 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) [2022-12-13 15:43:11,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-12-13 15:43:11,116 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-12-13 15:43:11,116 INFO L175 Difference]: Start difference. First operand has 46 places, 28 transitions, 200 flow. Second operand 6 states and 509 transitions. [2022-12-13 15:43:11,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 338 flow [2022-12-13 15:43:11,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 312 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-13 15:43:11,118 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 231 flow [2022-12-13 15:43:11,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2022-12-13 15:43:11,118 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 19 predicate places. [2022-12-13 15:43:11,118 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 231 flow [2022-12-13 15:43:11,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 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) [2022-12-13 15:43:11,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:43:11,119 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:43:11,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:43:11,119 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)] === [2022-12-13 15:43:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:11,119 INFO L85 PathProgramCache]: Analyzing trace with hash -24576470, now seen corresponding path program 2 times [2022-12-13 15:43:11,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:11,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063547987] [2022-12-13 15:43:11,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:11,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:43:11,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:43:11,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063547987] [2022-12-13 15:43:11,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063547987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:43:11,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:43:11,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:43:11,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784043317] [2022-12-13 15:43:11,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:43:11,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:43:11,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:43:11,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:43:11,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:43:11,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 183 [2022-12-13 15:43:11,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2022-12-13 15:43:11,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:43:11,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 183 [2022-12-13 15:43:11,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:43:11,268 INFO L130 PetriNetUnfolder]: 32/84 cut-off events. [2022-12-13 15:43:11,269 INFO L131 PetriNetUnfolder]: For 252/253 co-relation queries the response was YES. [2022-12-13 15:43:11,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 84 events. 32/84 cut-off events. For 252/253 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 210 event pairs, 5 based on Foata normal form. 9/93 useless extension candidates. Maximal degree in co-relation 363. Up to 63 conditions per place. [2022-12-13 15:43:11,269 INFO L137 encePairwiseOnDemand]: 179/183 looper letters, 23 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2022-12-13 15:43:11,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 31 transitions, 276 flow [2022-12-13 15:43:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:43:11,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:43:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2022-12-13 15:43:11,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4899817850637523 [2022-12-13 15:43:11,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2022-12-13 15:43:11,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2022-12-13 15:43:11,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:43:11,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2022-12-13 15:43:11,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2022-12-13 15:43:11,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-12-13 15:43:11,274 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-12-13 15:43:11,275 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 231 flow. Second operand 3 states and 269 transitions. [2022-12-13 15:43:11,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 31 transitions, 276 flow [2022-12-13 15:43:11,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 220 flow, removed 11 selfloop flow, removed 12 redundant places. [2022-12-13 15:43:11,277 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 151 flow [2022-12-13 15:43:11,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2022-12-13 15:43:11,278 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2022-12-13 15:43:11,278 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 151 flow [2022-12-13 15:43:11,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2022-12-13 15:43:11,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:43:11,279 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:43:11,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:43:11,279 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)] === [2022-12-13 15:43:11,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:11,279 INFO L85 PathProgramCache]: Analyzing trace with hash 720337936, now seen corresponding path program 1 times [2022-12-13 15:43:11,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:11,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510188936] [2022-12-13 15:43:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:11,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:43:11,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:43:11,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510188936] [2022-12-13 15:43:11,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510188936] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:43:11,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:43:11,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:43:11,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736349449] [2022-12-13 15:43:11,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:43:11,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:43:11,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:43:11,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:43:11,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:43:11,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 183 [2022-12-13 15:43:11,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2022-12-13 15:43:11,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:43:11,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 183 [2022-12-13 15:43:11,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:43:11,446 INFO L130 PetriNetUnfolder]: 8/35 cut-off events. [2022-12-13 15:43:11,446 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-12-13 15:43:11,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 35 events. 8/35 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 6/41 useless extension candidates. Maximal degree in co-relation 134. Up to 14 conditions per place. [2022-12-13 15:43:11,447 INFO L137 encePairwiseOnDemand]: 179/183 looper letters, 20 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2022-12-13 15:43:11,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 229 flow [2022-12-13 15:43:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:43:11,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:43:11,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2022-12-13 15:43:11,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4808743169398907 [2022-12-13 15:43:11,448 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2022-12-13 15:43:11,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2022-12-13 15:43:11,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:43:11,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2022-12-13 15:43:11,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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) [2022-12-13 15:43:11,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 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) [2022-12-13 15:43:11,452 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 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) [2022-12-13 15:43:11,452 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 151 flow. Second operand 4 states and 352 transitions. [2022-12-13 15:43:11,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 229 flow [2022-12-13 15:43:11,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 30 transitions, 188 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-12-13 15:43:11,454 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 129 flow [2022-12-13 15:43:11,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2022-12-13 15:43:11,455 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 10 predicate places. [2022-12-13 15:43:11,455 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 129 flow [2022-12-13 15:43:11,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2022-12-13 15:43:11,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:43:11,456 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:43:11,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:43:11,456 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)] === [2022-12-13 15:43:11,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:11,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1728807270, now seen corresponding path program 1 times [2022-12-13 15:43:11,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:11,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387837525] [2022-12-13 15:43:11,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:11,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:43:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:43:12,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:43:12,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387837525] [2022-12-13 15:43:12,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387837525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:43:12,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:43:12,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:43:12,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43206580] [2022-12-13 15:43:12,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:43:12,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:43:12,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:43:12,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:43:12,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:43:12,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 183 [2022-12-13 15:43:12,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 129 flow. Second operand has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 9 states have internal predecessors, (735), 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) [2022-12-13 15:43:12,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:43:12,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 183 [2022-12-13 15:43:12,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:43:12,408 INFO L130 PetriNetUnfolder]: 9/52 cut-off events. [2022-12-13 15:43:12,408 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-12-13 15:43:12,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 52 events. 9/52 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 103 event pairs, 3 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 182. Up to 21 conditions per place. [2022-12-13 15:43:12,408 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 22 selfloop transitions, 5 changer transitions 12/42 dead transitions. [2022-12-13 15:43:12,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 289 flow [2022-12-13 15:43:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:43:12,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 15:43:12,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 673 transitions. [2022-12-13 15:43:12,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45969945355191255 [2022-12-13 15:43:12,410 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 673 transitions. [2022-12-13 15:43:12,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 673 transitions. [2022-12-13 15:43:12,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:43:12,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 673 transitions. [2022-12-13 15:43:12,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.125) internal successors, (673), 8 states have internal predecessors, (673), 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) [2022-12-13 15:43:12,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 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) [2022-12-13 15:43:12,413 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 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) [2022-12-13 15:43:12,413 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 129 flow. Second operand 8 states and 673 transitions. [2022-12-13 15:43:12,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 289 flow [2022-12-13 15:43:12,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 257 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-12-13 15:43:12,414 INFO L231 Difference]: Finished difference. Result has 44 places, 22 transitions, 103 flow [2022-12-13 15:43:12,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=103, PETRI_PLACES=44, PETRI_TRANSITIONS=22} [2022-12-13 15:43:12,414 INFO L288 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2022-12-13 15:43:12,414 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 22 transitions, 103 flow [2022-12-13 15:43:12,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 9 states have internal predecessors, (735), 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) [2022-12-13 15:43:12,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:43:12,415 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:43:12,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:43:12,415 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)] === [2022-12-13 15:43:12,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:43:12,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1001556946, now seen corresponding path program 2 times [2022-12-13 15:43:12,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:43:12,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646833690] [2022-12-13 15:43:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:43:12,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:43:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:43:12,436 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:43:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:43:12,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:43:12,475 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:43:12,475 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-13 15:43:12,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-13 15:43:12,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-13 15:43:12,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-13 15:43:12,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-12-13 15:43:12,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:43:12,477 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:43:12,482 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 15:43:12,482 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:43:12,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:43:12 BasicIcfg [2022-12-13 15:43:12,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:43:12,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:43:12,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:43:12,511 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:43:12,511 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:43:04" (3/4) ... [2022-12-13 15:43:12,513 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 15:43:12,553 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:43:12,553 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:43:12,554 INFO L158 Benchmark]: Toolchain (without parser) took 8804.09ms. Allocated memory was 123.7MB in the beginning and 218.1MB in the end (delta: 94.4MB). Free memory was 88.7MB in the beginning and 80.8MB in the end (delta: 7.9MB). Peak memory consumption was 103.8MB. Max. memory is 16.1GB. [2022-12-13 15:43:12,554 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 68.5MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:43:12,554 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.28ms. Allocated memory is still 123.7MB. Free memory was 88.7MB in the beginning and 63.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-13 15:43:12,555 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.12ms. Allocated memory is still 123.7MB. Free memory was 63.6MB in the beginning and 61.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:43:12,555 INFO L158 Benchmark]: Boogie Preprocessor took 31.78ms. Allocated memory is still 123.7MB. Free memory was 61.0MB in the beginning and 59.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:43:12,555 INFO L158 Benchmark]: RCFGBuilder took 500.41ms. Allocated memory is still 123.7MB. Free memory was 58.9MB in the beginning and 82.1MB in the end (delta: -23.1MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2022-12-13 15:43:12,556 INFO L158 Benchmark]: TraceAbstraction took 7797.30ms. Allocated memory was 123.7MB in the beginning and 218.1MB in the end (delta: 94.4MB). Free memory was 80.7MB in the beginning and 88.2MB in the end (delta: -7.4MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. [2022-12-13 15:43:12,556 INFO L158 Benchmark]: Witness Printer took 42.33ms. Allocated memory is still 218.1MB. Free memory was 88.2MB in the beginning and 80.8MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 15:43:12,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 68.5MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.28ms. Allocated memory is still 123.7MB. Free memory was 88.7MB in the beginning and 63.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.12ms. Allocated memory is still 123.7MB. Free memory was 63.6MB in the beginning and 61.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.78ms. Allocated memory is still 123.7MB. Free memory was 61.0MB in the beginning and 59.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 500.41ms. Allocated memory is still 123.7MB. Free memory was 58.9MB in the beginning and 82.1MB in the end (delta: -23.1MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7797.30ms. Allocated memory was 123.7MB in the beginning and 218.1MB in the end (delta: 94.4MB). Free memory was 80.7MB in the beginning and 88.2MB in the end (delta: -7.4MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. * Witness Printer took 42.33ms. Allocated memory is still 218.1MB. Free memory was 88.2MB in the beginning and 80.8MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 100 PlacesBefore, 28 PlacesAfterwards, 95 TransitionsBefore, 22 TransitionsAfterwards, 1292 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 86 TotalNumberOfCompositions, 3660 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2002, independent: 1851, independent conditional: 0, independent unconditional: 1851, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 729, independent: 703, independent conditional: 0, independent unconditional: 703, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2002, independent: 1148, independent conditional: 0, independent unconditional: 1148, dependent: 125, dependent conditional: 0, dependent unconditional: 125, unknown: 729, unknown conditional: 0, unknown unconditional: 729] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L712] 0 int __unbuffered_p1_EBX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L717] 0 _Bool x$flush_delayed; [L718] 0 int x$mem_tmp; [L719] 0 _Bool x$r_buff0_thd0; [L720] 0 _Bool x$r_buff0_thd1; [L721] 0 _Bool x$r_buff0_thd2; [L722] 0 _Bool x$r_buff1_thd0; [L723] 0 _Bool x$r_buff1_thd1; [L724] 0 _Bool x$r_buff1_thd2; [L725] 0 _Bool x$read_delayed; [L726] 0 int *x$read_delayed_var; [L727] 0 int x$w_buff0; [L728] 0 _Bool x$w_buff0_used; [L729] 0 int x$w_buff1; [L730] 0 _Bool x$w_buff1_used; [L732] 0 int y = 0; [L733] 0 _Bool weak$$choice0; [L734] 0 _Bool weak$$choice2; [L800] 0 pthread_t t1587; [L801] FCALL, FORK 0 pthread_create(&t1587, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1587, ((void *)0), P0, ((void *)0))=-1, t1587={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L802] 0 pthread_t t1588; [L803] FCALL, FORK 0 pthread_create(&t1588, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1588, ((void *)0), P1, ((void *)0))=0, t1587={5:0}, t1588={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L758] 2 x$w_buff1 = x$w_buff0 [L759] 2 x$w_buff0 = 2 [L760] 2 x$w_buff1_used = x$w_buff0_used [L761] 2 x$w_buff0_used = (_Bool)1 [L762] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L762] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L763] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L764] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L765] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L766] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0] [L769] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L772] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L775] 2 __unbuffered_p1_EBX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L738] 1 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L741] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L778] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L779] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L780] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L781] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L782] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L785] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L787] 2 return 0; [L744] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L745] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L746] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L747] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L748] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L751] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L753] 1 return 0; [L805] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L807] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L807] RET 0 assume_abort_if_not(main$tmp_guard0) [L809] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L810] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L811] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L812] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L813] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1587={5:0}, t1588={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L816] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L817] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L818] 0 x$flush_delayed = weak$$choice2 [L819] 0 x$mem_tmp = x [L820] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L821] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L822] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L823] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L824] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L825] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L826] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L827] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 1) [L828] 0 x = x$flush_delayed ? x$mem_tmp : x [L829] 0 x$flush_delayed = (_Bool)0 [L831] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 801]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 803]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - 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: 7.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 440 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 341 mSDsluCounter, 317 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 242 mSDsCounter, 118 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 915 IncrementalHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 118 mSolverCounterUnsat, 75 mSDtfsCounter, 915 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=310occurred in iteration=6, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 1135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-13 15:43:12,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b8121-196d-4296-a9ec-13a09c47177a/bin/uautomizer-uyxdKDjOR8/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE