./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/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_cc917410-0a5c-46bc-b538-76fe0152d117/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/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_cc917410-0a5c-46bc-b538-76fe0152d117/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 4b807ac1723767f46eb51e856f642cbeec29c757d6219d60986235d902b15355 --- 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 21:30:04,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:30:04,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:30:04,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:30:04,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:30:04,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:30:04,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:30:04,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:30:04,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:30:04,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:30:04,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:30:04,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:30:04,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:30:04,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:30:04,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:30:04,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:30:04,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:30:04,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:30:04,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:30:04,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:30:04,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:30:04,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:30:04,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:30:04,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:30:04,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:30:04,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:30:04,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:30:04,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:30:04,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:30:04,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:30:04,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:30:04,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:30:04,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:30:04,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:30:04,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:30:04,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:30:04,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:30:04,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:30:04,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:30:04,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:30:04,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:30:04,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:30:04,199 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:30:04,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:30:04,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:30:04,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:30:04,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:30:04,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:30:04,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:30:04,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:30:04,206 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:30:04,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:30:04,207 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:30:04,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:30:04,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:30:04,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:30:04,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:30:04,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:30:04,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:30:04,208 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:30:04,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:30:04,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:30:04,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:30:04,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:30:04,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:30:04,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:30:04,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:30:04,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:30:04,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:30:04,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:30:04,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:30:04,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:30:04,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:30:04,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:30:04,211 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:30:04,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:30:04,211 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:30:04,211 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_cc917410-0a5c-46bc-b538-76fe0152d117/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b807ac1723767f46eb51e856f642cbeec29c757d6219d60986235d902b15355 [2022-12-13 21:30:04,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:30:04,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:30:04,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:30:04,399 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:30:04,400 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:30:04,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-12-13 21:30:06,974 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:30:07,162 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:30:07,162 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/sv-benchmarks/c/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-12-13 21:30:07,173 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/bin/uautomizer-uyxdKDjOR8/data/b47ced747/0ef1a885c9f744d999b8d57077167957/FLAGccb034236 [2022-12-13 21:30:07,525 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/bin/uautomizer-uyxdKDjOR8/data/b47ced747/0ef1a885c9f744d999b8d57077167957 [2022-12-13 21:30:07,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:30:07,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:30:07,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:30:07,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:30:07,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:30:07,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:30:07" (1/1) ... [2022-12-13 21:30:07,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4c4eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07, skipping insertion in model container [2022-12-13 21:30:07,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:30:07" (1/1) ... [2022-12-13 21:30:07,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:30:07,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:30:07,677 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_cc917410-0a5c-46bc-b538-76fe0152d117/sv-benchmarks/c/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i[973,986] [2022-12-13 21:30:07,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,785 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:30:07,803 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:30:07,812 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_cc917410-0a5c-46bc-b538-76fe0152d117/sv-benchmarks/c/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i[973,986] [2022-12-13 21:30:07,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:30:07,847 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:30:07,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:30:07,869 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:30:07,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07 WrapperNode [2022-12-13 21:30:07,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:30:07,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:30:07,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:30:07,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:30:07,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07" (1/1) ... [2022-12-13 21:30:07,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07" (1/1) ... [2022-12-13 21:30:07,903 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2022-12-13 21:30:07,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:30:07,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:30:07,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:30:07,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:30:07,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07" (1/1) ... [2022-12-13 21:30:07,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07" (1/1) ... [2022-12-13 21:30:07,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07" (1/1) ... [2022-12-13 21:30:07,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07" (1/1) ... [2022-12-13 21:30:07,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07" (1/1) ... [2022-12-13 21:30:07,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07" (1/1) ... [2022-12-13 21:30:07,921 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07" (1/1) ... [2022-12-13 21:30:07,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07" (1/1) ... [2022-12-13 21:30:07,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:30:07,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:30:07,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:30:07,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:30:07,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07" (1/1) ... [2022-12-13 21:30:07,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:30:07,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:30:07,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:30:07,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:30:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:30:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 21:30:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:30:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:30:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:30:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 21:30:07,985 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 21:30:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 21:30:07,985 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 21:30:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:30:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 21:30:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:30:07,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:30:07,987 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 21:30:08,086 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:30:08,087 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:30:08,312 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:30:08,415 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:30:08,415 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 21:30:08,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:30:08 BoogieIcfgContainer [2022-12-13 21:30:08,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:30:08,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:30:08,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:30:08,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:30:08,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:30:07" (1/3) ... [2022-12-13 21:30:08,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6758b7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:30:08, skipping insertion in model container [2022-12-13 21:30:08,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:30:07" (2/3) ... [2022-12-13 21:30:08,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6758b7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:30:08, skipping insertion in model container [2022-12-13 21:30:08,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:30:08" (3/3) ... [2022-12-13 21:30:08,424 INFO L112 eAbstractionObserver]: Analyzing ICFG mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-12-13 21:30:08,430 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:30:08,438 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:30:08,438 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 21:30:08,438 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:30:08,473 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:30:08,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 94 transitions, 198 flow [2022-12-13 21:30:08,528 INFO L130 PetriNetUnfolder]: 2/92 cut-off events. [2022-12-13 21:30:08,528 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:30:08,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 92 events. 2/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2022-12-13 21:30:08,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 94 transitions, 198 flow [2022-12-13 21:30:08,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 92 transitions, 190 flow [2022-12-13 21:30:08,537 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:30:08,544 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 92 transitions, 190 flow [2022-12-13 21:30:08,546 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 92 transitions, 190 flow [2022-12-13 21:30:08,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 92 transitions, 190 flow [2022-12-13 21:30:08,562 INFO L130 PetriNetUnfolder]: 2/92 cut-off events. [2022-12-13 21:30:08,562 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:30:08,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 92 events. 2/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2022-12-13 21:30:08,563 INFO L119 LiptonReduction]: Number of co-enabled transitions 1140 [2022-12-13 21:30:11,002 INFO L134 LiptonReduction]: Checked pairs total: 2970 [2022-12-13 21:30:11,002 INFO L136 LiptonReduction]: Total number of compositions: 83 [2022-12-13 21:30:11,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:30:11,017 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;@5f32685b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:30:11,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 21:30:11,020 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 21:30:11,020 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:30:11,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:11,020 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:30:11,021 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 21:30:11,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:11,024 INFO L85 PathProgramCache]: Analyzing trace with hash 400172227, now seen corresponding path program 1 times [2022-12-13 21:30:11,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:11,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686237435] [2022-12-13 21:30:11,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:11,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:11,312 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 21:30:11,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:30:11,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686237435] [2022-12-13 21:30:11,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686237435] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:11,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:11,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:30:11,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329283991] [2022-12-13 21:30:11,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:11,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:30:11,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:30:11,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:30:11,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:30:11,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 177 [2022-12-13 21:30:11,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 21:30:11,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:11,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 177 [2022-12-13 21:30:11,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:11,445 INFO L130 PetriNetUnfolder]: 159/309 cut-off events. [2022-12-13 21:30:11,445 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:30:11,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 309 events. 159/309 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1318 event pairs, 24 based on Foata normal form. 16/292 useless extension candidates. Maximal degree in co-relation 593. Up to 220 conditions per place. [2022-12-13 21:30:11,448 INFO L137 encePairwiseOnDemand]: 173/177 looper letters, 19 selfloop transitions, 2 changer transitions 4/27 dead transitions. [2022-12-13 21:30:11,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 110 flow [2022-12-13 21:30:11,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:30:11,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:30:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2022-12-13 21:30:11,458 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5160075329566854 [2022-12-13 21:30:11,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2022-12-13 21:30:11,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2022-12-13 21:30:11,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:11,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2022-12-13 21:30:11,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 21:30:11,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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 21:30:11,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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 21:30:11,468 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 46 flow. Second operand 3 states and 274 transitions. [2022-12-13 21:30:11,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 110 flow [2022-12-13 21:30:11,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:30:11,477 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 40 flow [2022-12-13 21:30:11,478 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2022-12-13 21:30:11,481 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2022-12-13 21:30:11,481 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 40 flow [2022-12-13 21:30:11,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 21:30:11,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:11,482 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:11,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:30:11,482 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 21:30:11,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:11,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1296473277, now seen corresponding path program 1 times [2022-12-13 21:30:11,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:11,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583957301] [2022-12-13 21:30:11,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:11,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:11,771 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 21:30:11,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:30:11,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583957301] [2022-12-13 21:30:11,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583957301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:11,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:11,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:30:11,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770601059] [2022-12-13 21:30:11,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:11,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:30:11,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:30:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:30:11,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:30:11,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 177 [2022-12-13 21:30:11,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 40 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 21:30:11,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:11,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 177 [2022-12-13 21:30:11,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:11,929 INFO L130 PetriNetUnfolder]: 149/293 cut-off events. [2022-12-13 21:30:11,930 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-12-13 21:30:11,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 293 events. 149/293 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1169 event pairs, 70 based on Foata normal form. 20/313 useless extension candidates. Maximal degree in co-relation 601. Up to 229 conditions per place. [2022-12-13 21:30:11,931 INFO L137 encePairwiseOnDemand]: 172/177 looper letters, 19 selfloop transitions, 3 changer transitions 11/34 dead transitions. [2022-12-13 21:30:11,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 34 transitions, 150 flow [2022-12-13 21:30:11,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:30:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:30:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-12-13 21:30:11,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4971751412429379 [2022-12-13 21:30:11,936 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-12-13 21:30:11,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-12-13 21:30:11,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:11,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-12-13 21:30:11,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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 21:30:11,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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 21:30:11,940 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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 21:30:11,940 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 40 flow. Second operand 5 states and 440 transitions. [2022-12-13 21:30:11,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 34 transitions, 150 flow [2022-12-13 21:30:11,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 34 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:30:11,941 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 63 flow [2022-12-13 21:30:11,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=63, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2022-12-13 21:30:11,941 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2022-12-13 21:30:11,941 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 63 flow [2022-12-13 21:30:11,942 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 21:30:11,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:11,942 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:11,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:30:11,942 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 21:30:11,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1535998176, now seen corresponding path program 1 times [2022-12-13 21:30:11,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:11,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815598118] [2022-12-13 21:30:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:11,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:12,299 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 21:30:12,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:30:12,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815598118] [2022-12-13 21:30:12,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815598118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:12,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:12,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:30:12,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530221886] [2022-12-13 21:30:12,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:12,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:30:12,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:30:12,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:30:12,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:30:12,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 177 [2022-12-13 21:30:12,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 63 flow. Second operand has 6 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:30:12,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:12,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 177 [2022-12-13 21:30:12,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:12,498 INFO L130 PetriNetUnfolder]: 137/270 cut-off events. [2022-12-13 21:30:12,498 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-12-13 21:30:12,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 270 events. 137/270 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1031 event pairs, 63 based on Foata normal form. 15/285 useless extension candidates. Maximal degree in co-relation 665. Up to 204 conditions per place. [2022-12-13 21:30:12,500 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 22 selfloop transitions, 5 changer transitions 10/38 dead transitions. [2022-12-13 21:30:12,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 193 flow [2022-12-13 21:30:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:30:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:30:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2022-12-13 21:30:12,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4830508474576271 [2022-12-13 21:30:12,502 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2022-12-13 21:30:12,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2022-12-13 21:30:12,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:12,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2022-12-13 21:30:12,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 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 21:30:12,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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 21:30:12,505 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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 21:30:12,506 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 63 flow. Second operand 6 states and 513 transitions. [2022-12-13 21:30:12,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 193 flow [2022-12-13 21:30:12,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 188 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 21:30:12,508 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 93 flow [2022-12-13 21:30:12,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=93, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2022-12-13 21:30:12,509 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2022-12-13 21:30:12,509 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 93 flow [2022-12-13 21:30:12,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:30:12,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:12,509 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:12,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:30:12,510 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 21:30:12,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:12,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1318242240, now seen corresponding path program 1 times [2022-12-13 21:30:12,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:12,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433565149] [2022-12-13 21:30:12,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:12,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:12,670 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 21:30:12,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:30:12,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433565149] [2022-12-13 21:30:12,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433565149] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:12,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:12,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:30:12,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626599774] [2022-12-13 21:30:12,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:12,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:30:12,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:30:12,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:30:12,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:30:12,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 177 [2022-12-13 21:30:12,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 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 21:30:12,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:12,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 177 [2022-12-13 21:30:12,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:12,812 INFO L130 PetriNetUnfolder]: 135/271 cut-off events. [2022-12-13 21:30:12,812 INFO L131 PetriNetUnfolder]: For 341/341 co-relation queries the response was YES. [2022-12-13 21:30:12,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 271 events. 135/271 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1043 event pairs, 26 based on Foata normal form. 12/283 useless extension candidates. Maximal degree in co-relation 770. Up to 181 conditions per place. [2022-12-13 21:30:12,813 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 25 selfloop transitions, 7 changer transitions 9/42 dead transitions. [2022-12-13 21:30:12,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 251 flow [2022-12-13 21:30:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:30:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:30:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 594 transitions. [2022-12-13 21:30:12,815 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4794188861985472 [2022-12-13 21:30:12,815 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 594 transitions. [2022-12-13 21:30:12,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 594 transitions. [2022-12-13 21:30:12,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:12,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 594 transitions. [2022-12-13 21:30:12,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 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 21:30:12,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 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 21:30:12,819 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 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 21:30:12,819 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 93 flow. Second operand 7 states and 594 transitions. [2022-12-13 21:30:12,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 251 flow [2022-12-13 21:30:12,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 236 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 21:30:12,821 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 122 flow [2022-12-13 21:30:12,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=122, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2022-12-13 21:30:12,821 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2022-12-13 21:30:12,821 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 122 flow [2022-12-13 21:30:12,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 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 21:30:12,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:12,822 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:12,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:30:12,822 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 21:30:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:12,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1316627760, now seen corresponding path program 2 times [2022-12-13 21:30:12,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:12,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197401756] [2022-12-13 21:30:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:12,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:13,162 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 21:30:13,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:30:13,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197401756] [2022-12-13 21:30:13,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197401756] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:13,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:13,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:30:13,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215090522] [2022-12-13 21:30:13,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:13,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:30:13,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:30:13,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:30:13,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:30:13,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 177 [2022-12-13 21:30:13,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 77.42857142857143) internal successors, (542), 7 states have internal predecessors, (542), 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 21:30:13,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:13,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 177 [2022-12-13 21:30:13,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:13,324 INFO L130 PetriNetUnfolder]: 104/200 cut-off events. [2022-12-13 21:30:13,324 INFO L131 PetriNetUnfolder]: For 369/369 co-relation queries the response was YES. [2022-12-13 21:30:13,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 200 events. 104/200 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 671 event pairs, 40 based on Foata normal form. 4/204 useless extension candidates. Maximal degree in co-relation 678. Up to 168 conditions per place. [2022-12-13 21:30:13,326 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 24 selfloop transitions, 8 changer transitions 0/33 dead transitions. [2022-12-13 21:30:13,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 231 flow [2022-12-13 21:30:13,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:30:13,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:30:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 411 transitions. [2022-12-13 21:30:13,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46440677966101696 [2022-12-13 21:30:13,328 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 411 transitions. [2022-12-13 21:30:13,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 411 transitions. [2022-12-13 21:30:13,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:13,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 411 transitions. [2022-12-13 21:30:13,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 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 21:30:13,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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 21:30:13,331 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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 21:30:13,332 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 122 flow. Second operand 5 states and 411 transitions. [2022-12-13 21:30:13,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 231 flow [2022-12-13 21:30:13,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 214 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 21:30:13,334 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 145 flow [2022-12-13 21:30:13,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2022-12-13 21:30:13,335 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2022-12-13 21:30:13,335 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 145 flow [2022-12-13 21:30:13,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.42857142857143) internal successors, (542), 7 states have internal predecessors, (542), 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 21:30:13,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:13,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:13,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:30:13,336 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 21:30:13,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:13,337 INFO L85 PathProgramCache]: Analyzing trace with hash -269069757, now seen corresponding path program 1 times [2022-12-13 21:30:13,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:13,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391760061] [2022-12-13 21:30:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:13,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:13,725 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 21:30:13,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:30:13,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391760061] [2022-12-13 21:30:13,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391760061] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:13,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:13,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:30:13,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548219267] [2022-12-13 21:30:13,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:13,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:30:13,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:30:13,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:30:13,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:30:13,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 177 [2022-12-13 21:30:13,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:30:13,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:13,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 177 [2022-12-13 21:30:13,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:13,997 INFO L130 PetriNetUnfolder]: 153/283 cut-off events. [2022-12-13 21:30:13,997 INFO L131 PetriNetUnfolder]: For 503/503 co-relation queries the response was YES. [2022-12-13 21:30:13,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 283 events. 153/283 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 963 event pairs, 43 based on Foata normal form. 12/295 useless extension candidates. Maximal degree in co-relation 987. Up to 220 conditions per place. [2022-12-13 21:30:13,999 INFO L137 encePairwiseOnDemand]: 168/177 looper letters, 32 selfloop transitions, 12 changer transitions 9/53 dead transitions. [2022-12-13 21:30:13,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 381 flow [2022-12-13 21:30:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:30:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:30:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 727 transitions. [2022-12-13 21:30:14,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4563716258631513 [2022-12-13 21:30:14,002 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 727 transitions. [2022-12-13 21:30:14,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 727 transitions. [2022-12-13 21:30:14,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:14,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 727 transitions. [2022-12-13 21:30:14,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.77777777777777) internal successors, (727), 9 states have internal predecessors, (727), 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 21:30:14,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 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 21:30:14,007 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 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 21:30:14,008 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 145 flow. Second operand 9 states and 727 transitions. [2022-12-13 21:30:14,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 381 flow [2022-12-13 21:30:14,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 365 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 21:30:14,011 INFO L231 Difference]: Finished difference. Result has 46 places, 29 transitions, 200 flow [2022-12-13 21:30:14,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=200, PETRI_PLACES=46, PETRI_TRANSITIONS=29} [2022-12-13 21:30:14,011 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2022-12-13 21:30:14,012 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 29 transitions, 200 flow [2022-12-13 21:30:14,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:30:14,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:14,012 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:14,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:30:14,012 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 21:30:14,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:14,013 INFO L85 PathProgramCache]: Analyzing trace with hash 749782443, now seen corresponding path program 2 times [2022-12-13 21:30:14,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:14,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716657023] [2022-12-13 21:30:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:14,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:14,417 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 21:30:14,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:30:14,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716657023] [2022-12-13 21:30:14,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716657023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:14,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:14,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:30:14,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798076369] [2022-12-13 21:30:14,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:14,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:30:14,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:30:14,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:30:14,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:30:14,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 177 [2022-12-13 21:30:14,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 29 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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 21:30:14,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:14,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 177 [2022-12-13 21:30:14,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:14,633 INFO L130 PetriNetUnfolder]: 159/297 cut-off events. [2022-12-13 21:30:14,633 INFO L131 PetriNetUnfolder]: For 999/999 co-relation queries the response was YES. [2022-12-13 21:30:14,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 297 events. 159/297 cut-off events. For 999/999 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1047 event pairs, 47 based on Foata normal form. 14/311 useless extension candidates. Maximal degree in co-relation 1228. Up to 208 conditions per place. [2022-12-13 21:30:14,635 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 33 selfloop transitions, 13 changer transitions 10/56 dead transitions. [2022-12-13 21:30:14,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 462 flow [2022-12-13 21:30:14,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:30:14,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:30:14,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 564 transitions. [2022-12-13 21:30:14,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4552058111380145 [2022-12-13 21:30:14,636 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 564 transitions. [2022-12-13 21:30:14,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 564 transitions. [2022-12-13 21:30:14,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:14,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 564 transitions. [2022-12-13 21:30:14,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.57142857142857) internal successors, (564), 7 states have internal predecessors, (564), 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 21:30:14,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 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 21:30:14,639 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 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 21:30:14,639 INFO L175 Difference]: Start difference. First operand has 46 places, 29 transitions, 200 flow. Second operand 7 states and 564 transitions. [2022-12-13 21:30:14,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 462 flow [2022-12-13 21:30:14,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 426 flow, removed 15 selfloop flow, removed 4 redundant places. [2022-12-13 21:30:14,641 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 264 flow [2022-12-13 21:30:14,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=264, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2022-12-13 21:30:14,642 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 24 predicate places. [2022-12-13 21:30:14,642 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 264 flow [2022-12-13 21:30:14,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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 21:30:14,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:14,642 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:14,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:30:14,643 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 21:30:14,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:14,643 INFO L85 PathProgramCache]: Analyzing trace with hash -992908509, now seen corresponding path program 1 times [2022-12-13 21:30:14,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:14,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966011199] [2022-12-13 21:30:14,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:14,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:14,728 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 21:30:14,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:30:14,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966011199] [2022-12-13 21:30:14,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966011199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:14,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:14,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:30:14,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213899498] [2022-12-13 21:30:14,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:14,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:30:14,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:30:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:30:14,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:30:14,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 177 [2022-12-13 21:30:14,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 21:30:14,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:14,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 177 [2022-12-13 21:30:14,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:14,792 INFO L130 PetriNetUnfolder]: 51/123 cut-off events. [2022-12-13 21:30:14,792 INFO L131 PetriNetUnfolder]: For 518/523 co-relation queries the response was YES. [2022-12-13 21:30:14,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 123 events. 51/123 cut-off events. For 518/523 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 385 event pairs, 20 based on Foata normal form. 11/132 useless extension candidates. Maximal degree in co-relation 575. Up to 81 conditions per place. [2022-12-13 21:30:14,793 INFO L137 encePairwiseOnDemand]: 173/177 looper letters, 29 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2022-12-13 21:30:14,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 367 flow [2022-12-13 21:30:14,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:30:14,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:30:14,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2022-12-13 21:30:14,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4952919020715631 [2022-12-13 21:30:14,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2022-12-13 21:30:14,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2022-12-13 21:30:14,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:14,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2022-12-13 21:30:14,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 21:30:14,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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 21:30:14,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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 21:30:14,796 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 264 flow. Second operand 3 states and 263 transitions. [2022-12-13 21:30:14,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 367 flow [2022-12-13 21:30:14,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 354 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 21:30:14,798 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 265 flow [2022-12-13 21:30:14,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2022-12-13 21:30:14,798 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2022-12-13 21:30:14,799 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 265 flow [2022-12-13 21:30:14,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 21:30:14,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:14,799 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:14,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:30:14,799 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 21:30:14,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:14,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1313226672, now seen corresponding path program 1 times [2022-12-13 21:30:14,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:14,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270304805] [2022-12-13 21:30:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:14,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:15,044 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 21:30:15,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:30:15,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270304805] [2022-12-13 21:30:15,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270304805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:15,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:15,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:30:15,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609472976] [2022-12-13 21:30:15,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:15,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:30:15,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:30:15,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:30:15,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:30:15,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 177 [2022-12-13 21:30:15,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 81.71428571428571) internal successors, (572), 7 states have internal predecessors, (572), 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 21:30:15,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:15,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 177 [2022-12-13 21:30:15,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:15,243 INFO L130 PetriNetUnfolder]: 54/135 cut-off events. [2022-12-13 21:30:15,243 INFO L131 PetriNetUnfolder]: For 547/547 co-relation queries the response was YES. [2022-12-13 21:30:15,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 135 events. 54/135 cut-off events. For 547/547 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 428 event pairs, 10 based on Foata normal form. 4/139 useless extension candidates. Maximal degree in co-relation 650. Up to 97 conditions per place. [2022-12-13 21:30:15,245 INFO L137 encePairwiseOnDemand]: 172/177 looper letters, 30 selfloop transitions, 6 changer transitions 4/43 dead transitions. [2022-12-13 21:30:15,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 43 transitions, 400 flow [2022-12-13 21:30:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:30:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:30:15,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 510 transitions. [2022-12-13 21:30:15,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.480225988700565 [2022-12-13 21:30:15,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 510 transitions. [2022-12-13 21:30:15,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 510 transitions. [2022-12-13 21:30:15,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:15,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 510 transitions. [2022-12-13 21:30:15,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:30:15,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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 21:30:15,250 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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 21:30:15,251 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 265 flow. Second operand 6 states and 510 transitions. [2022-12-13 21:30:15,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 43 transitions, 400 flow [2022-12-13 21:30:15,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 379 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-12-13 21:30:15,253 INFO L231 Difference]: Finished difference. Result has 55 places, 34 transitions, 272 flow [2022-12-13 21:30:15,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=55, PETRI_TRANSITIONS=34} [2022-12-13 21:30:15,254 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 29 predicate places. [2022-12-13 21:30:15,254 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 34 transitions, 272 flow [2022-12-13 21:30:15,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.71428571428571) internal successors, (572), 7 states have internal predecessors, (572), 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 21:30:15,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:15,254 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:15,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:30:15,255 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 21:30:15,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:15,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1127044849, now seen corresponding path program 1 times [2022-12-13 21:30:15,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:15,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075958964] [2022-12-13 21:30:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:15,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:15,341 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 21:30:15,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:30:15,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075958964] [2022-12-13 21:30:15,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075958964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:15,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:15,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:30:15,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868402732] [2022-12-13 21:30:15,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:15,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:30:15,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:30:15,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:30:15,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:30:15,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 177 [2022-12-13 21:30:15,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 34 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 21:30:15,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:15,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 177 [2022-12-13 21:30:15,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:15,401 INFO L130 PetriNetUnfolder]: 21/62 cut-off events. [2022-12-13 21:30:15,401 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2022-12-13 21:30:15,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 62 events. 21/62 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 6 based on Foata normal form. 7/68 useless extension candidates. Maximal degree in co-relation 276. Up to 30 conditions per place. [2022-12-13 21:30:15,402 INFO L137 encePairwiseOnDemand]: 173/177 looper letters, 27 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2022-12-13 21:30:15,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 40 transitions, 379 flow [2022-12-13 21:30:15,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:30:15,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:30:15,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2022-12-13 21:30:15,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4844632768361582 [2022-12-13 21:30:15,404 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 343 transitions. [2022-12-13 21:30:15,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 343 transitions. [2022-12-13 21:30:15,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:15,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 343 transitions. [2022-12-13 21:30:15,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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 21:30:15,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 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 21:30:15,406 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 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 21:30:15,406 INFO L175 Difference]: Start difference. First operand has 55 places, 34 transitions, 272 flow. Second operand 4 states and 343 transitions. [2022-12-13 21:30:15,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 40 transitions, 379 flow [2022-12-13 21:30:15,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 40 transitions, 307 flow, removed 28 selfloop flow, removed 10 redundant places. [2022-12-13 21:30:15,407 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 229 flow [2022-12-13 21:30:15,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2022-12-13 21:30:15,408 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2022-12-13 21:30:15,408 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 229 flow [2022-12-13 21:30:15,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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 21:30:15,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:15,408 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:15,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:30:15,409 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 21:30:15,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:15,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1528018844, now seen corresponding path program 1 times [2022-12-13 21:30:15,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:15,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345460687] [2022-12-13 21:30:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:15,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:15,733 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 21:30:15,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:30:15,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345460687] [2022-12-13 21:30:15,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345460687] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:15,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:15,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:30:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641121314] [2022-12-13 21:30:15,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:15,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 21:30:15,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:30:15,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 21:30:15,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:30:15,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2022-12-13 21:30:15,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 229 flow. Second operand has 9 states, 9 states have (on average 73.77777777777777) internal successors, (664), 9 states have internal predecessors, (664), 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 21:30:15,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:15,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2022-12-13 21:30:15,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:16,035 INFO L130 PetriNetUnfolder]: 33/94 cut-off events. [2022-12-13 21:30:16,035 INFO L131 PetriNetUnfolder]: For 213/213 co-relation queries the response was YES. [2022-12-13 21:30:16,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 94 events. 33/94 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 266 event pairs, 1 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 403. Up to 36 conditions per place. [2022-12-13 21:30:16,036 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 21 selfloop transitions, 3 changer transitions 34/58 dead transitions. [2022-12-13 21:30:16,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 486 flow [2022-12-13 21:30:16,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:30:16,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:30:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 614 transitions. [2022-12-13 21:30:16,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4336158192090395 [2022-12-13 21:30:16,038 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 614 transitions. [2022-12-13 21:30:16,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 614 transitions. [2022-12-13 21:30:16,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:16,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 614 transitions. [2022-12-13 21:30:16,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.75) internal successors, (614), 8 states have internal predecessors, (614), 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 21:30:16,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 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 21:30:16,040 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 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 21:30:16,040 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 229 flow. Second operand 8 states and 614 transitions. [2022-12-13 21:30:16,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 486 flow [2022-12-13 21:30:16,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 447 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-13 21:30:16,042 INFO L231 Difference]: Finished difference. Result has 53 places, 22 transitions, 130 flow [2022-12-13 21:30:16,042 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=53, PETRI_TRANSITIONS=22} [2022-12-13 21:30:16,043 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2022-12-13 21:30:16,043 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 22 transitions, 130 flow [2022-12-13 21:30:16,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 73.77777777777777) internal successors, (664), 9 states have internal predecessors, (664), 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 21:30:16,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:16,043 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:16,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:30:16,043 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 21:30:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1262025706, now seen corresponding path program 2 times [2022-12-13 21:30:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:16,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639245748] [2022-12-13 21:30:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:16,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:16,423 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 21:30:16,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:30:16,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639245748] [2022-12-13 21:30:16,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639245748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:30:16,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:30:16,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:30:16,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451565096] [2022-12-13 21:30:16,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:30:16,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 21:30:16,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:30:16,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 21:30:16,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:30:16,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 177 [2022-12-13 21:30:16,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 22 transitions, 130 flow. Second operand has 9 states, 9 states have (on average 78.66666666666667) internal successors, (708), 9 states have internal predecessors, (708), 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 21:30:16,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:30:16,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 177 [2022-12-13 21:30:16,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:30:16,580 INFO L130 PetriNetUnfolder]: 9/43 cut-off events. [2022-12-13 21:30:16,580 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-12-13 21:30:16,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 43 events. 9/43 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 1 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 164. Up to 24 conditions per place. [2022-12-13 21:30:16,580 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 16 selfloop transitions, 4 changer transitions 11/32 dead transitions. [2022-12-13 21:30:16,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 32 transitions, 246 flow [2022-12-13 21:30:16,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:30:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:30:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 488 transitions. [2022-12-13 21:30:16,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4595103578154426 [2022-12-13 21:30:16,582 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 488 transitions. [2022-12-13 21:30:16,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 488 transitions. [2022-12-13 21:30:16,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:30:16,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 488 transitions. [2022-12-13 21:30:16,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.33333333333333) internal successors, (488), 6 states have internal predecessors, (488), 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 21:30:16,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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 21:30:16,585 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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 21:30:16,585 INFO L175 Difference]: Start difference. First operand has 53 places, 22 transitions, 130 flow. Second operand 6 states and 488 transitions. [2022-12-13 21:30:16,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 32 transitions, 246 flow [2022-12-13 21:30:16,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 32 transitions, 208 flow, removed 10 selfloop flow, removed 12 redundant places. [2022-12-13 21:30:16,587 INFO L231 Difference]: Finished difference. Result has 40 places, 20 transitions, 101 flow [2022-12-13 21:30:16,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=101, PETRI_PLACES=40, PETRI_TRANSITIONS=20} [2022-12-13 21:30:16,587 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2022-12-13 21:30:16,587 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 20 transitions, 101 flow [2022-12-13 21:30:16,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 78.66666666666667) internal successors, (708), 9 states have internal predecessors, (708), 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 21:30:16,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:30:16,588 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:16,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:30:16,588 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 21:30:16,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:16,589 INFO L85 PathProgramCache]: Analyzing trace with hash -848187990, now seen corresponding path program 3 times [2022-12-13 21:30:16,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:16,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627839191] [2022-12-13 21:30:16,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:16,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:30:16,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:30:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:30:16,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:30:16,674 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:30:16,675 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-13 21:30:16,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-13 21:30:16,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-13 21:30:16,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-13 21:30:16,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-12-13 21:30:16,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 21:30:16,678 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 21:30:16,683 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 21:30:16,683 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:30:16,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:30:16 BasicIcfg [2022-12-13 21:30:16,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:30:16,724 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:30:16,724 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:30:16,724 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:30:16,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:30:08" (3/4) ... [2022-12-13 21:30:16,727 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 21:30:16,780 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 21:30:16,780 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:30:16,780 INFO L158 Benchmark]: Toolchain (without parser) took 9252.68ms. Allocated memory was 134.2MB in the beginning and 234.9MB in the end (delta: 100.7MB). Free memory was 91.2MB in the beginning and 146.0MB in the end (delta: -54.8MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2022-12-13 21:30:16,781 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:30:16,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.25ms. Allocated memory is still 134.2MB. Free memory was 90.8MB in the beginning and 66.5MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 21:30:16,781 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.51ms. Allocated memory is still 134.2MB. Free memory was 66.1MB in the beginning and 63.5MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 21:30:16,781 INFO L158 Benchmark]: Boogie Preprocessor took 20.38ms. Allocated memory is still 134.2MB. Free memory was 63.5MB in the beginning and 61.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:30:16,782 INFO L158 Benchmark]: RCFGBuilder took 492.62ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 61.9MB in the beginning and 117.1MB in the end (delta: -55.3MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2022-12-13 21:30:16,782 INFO L158 Benchmark]: TraceAbstraction took 8304.45ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 115.9MB in the beginning and 153.3MB in the end (delta: -37.4MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. [2022-12-13 21:30:16,782 INFO L158 Benchmark]: Witness Printer took 55.63ms. Allocated memory is still 234.9MB. Free memory was 153.3MB in the beginning and 146.0MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 21:30:16,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.25ms. Allocated memory is still 134.2MB. Free memory was 90.8MB in the beginning and 66.5MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.51ms. Allocated memory is still 134.2MB. Free memory was 66.1MB in the beginning and 63.5MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.38ms. Allocated memory is still 134.2MB. Free memory was 63.5MB in the beginning and 61.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 492.62ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 61.9MB in the beginning and 117.1MB in the end (delta: -55.3MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8304.45ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 115.9MB in the beginning and 153.3MB in the end (delta: -37.4MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. * Witness Printer took 55.63ms. Allocated memory is still 234.9MB. Free memory was 153.3MB in the beginning and 146.0MB 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: 2.5s, 97 PlacesBefore, 26 PlacesAfterwards, 92 TransitionsBefore, 20 TransitionsAfterwards, 1140 CoEnabledTransitionPairs, 7 FixpointIterations, 37 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 83 TotalNumberOfCompositions, 2970 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1327, independent: 1184, independent conditional: 0, independent unconditional: 1184, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 649, independent: 627, independent conditional: 0, independent unconditional: 627, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1327, independent: 557, independent conditional: 0, independent unconditional: 557, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 649, unknown conditional: 0, unknown unconditional: 649] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, 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; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L715] 0 _Bool x$flush_delayed; [L716] 0 int x$mem_tmp; [L717] 0 _Bool x$r_buff0_thd0; [L718] 0 _Bool x$r_buff0_thd1; [L719] 0 _Bool x$r_buff0_thd2; [L720] 0 _Bool x$r_buff1_thd0; [L721] 0 _Bool x$r_buff1_thd1; [L722] 0 _Bool x$r_buff1_thd2; [L723] 0 _Bool x$read_delayed; [L724] 0 int *x$read_delayed_var; [L725] 0 int x$w_buff0; [L726] 0 _Bool x$w_buff0_used; [L727] 0 int x$w_buff1; [L728] 0 _Bool x$w_buff1_used; [L730] 0 int y = 0; [L731] 0 _Bool weak$$choice0; [L732] 0 _Bool weak$$choice2; [L792] 0 pthread_t t1447; [L793] FCALL, FORK 0 pthread_create(&t1447, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1447, ((void *)0), P0, ((void *)0))=-1, t1447={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] [L794] 0 pthread_t t1448; [L795] FCALL, FORK 0 pthread_create(&t1448, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1448, ((void *)0), P1, ((void *)0))=0, t1447={5:0}, t1448={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] [L756] 2 x$w_buff1 = x$w_buff0 [L757] 2 x$w_buff0 = 2 [L758] 2 x$w_buff1_used = x$w_buff0_used [L759] 2 x$w_buff0_used = (_Bool)1 [L760] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L760] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L761] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L762] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L763] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L764] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$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] [L767] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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] [L736] 1 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=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] [L739] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, 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=1] [L770] 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) [L771] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L772] 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 [L773] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L774] 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=0, 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=1] [L777] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L779] 2 return 0; [L742] 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) [L743] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L744] 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 [L745] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L746] 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=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=1] [L749] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L751] 1 return 0; [L797] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L799] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) VAL [\old(cond)=1, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, cond=1, main$tmp_guard0=1, main$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=1] [L799] RET 0 assume_abort_if_not(main$tmp_guard0) [L801] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L802] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L803] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L804] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L805] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1447={5:0}, t1448={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=1] [L808] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L809] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L810] 0 x$flush_delayed = weak$$choice2 [L811] 0 x$mem_tmp = x [L812] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L813] 0 x$w_buff0 = weak$$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$w_buff0)) [L814] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L815] 0 x$w_buff0_used = weak$$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)) [L816] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 x$r_buff0_thd0 = weak$$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)) [L818] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L819] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 0) [L820] 0 x = x$flush_delayed ? x$mem_tmp : x [L821] 0 x$flush_delayed = (_Bool)0 [L823] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, 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=1] - 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: 795]: 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: 793]: 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, 112 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: 8.2s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 545 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 419 mSDsluCounter, 524 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 454 mSDsCounter, 173 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1299 IncrementalHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 173 mSolverCounterUnsat, 70 mSDtfsCounter, 1299 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272occurred in iteration=9, InterpolantAutomatonStates: 69, 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, 3.0s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 1233 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-13 21:30:16,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc917410-0a5c-46bc-b538-76fe0152d117/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