./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe023_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe023_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R --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 b87483e693fd72a28f6c7edd484e610e6e0dbb17679c8092f6f9c9cd35d4acca --- 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-38b53e6 [2022-11-25 16:59:21,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:59:21,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:59:21,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:59:21,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:59:21,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:59:21,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:59:21,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:59:21,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:59:21,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:59:21,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:59:21,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:59:21,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:59:21,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:59:21,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:59:21,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:59:21,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:59:21,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:59:21,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:59:21,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:59:21,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:59:21,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:59:21,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:59:21,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:59:21,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:59:21,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:59:21,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:59:21,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:59:21,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:59:21,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:59:21,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:59:21,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:59:21,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:59:21,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:59:21,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:59:21,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:59:21,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:59:21,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:59:21,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:59:21,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:59:21,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:59:21,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:59:21,225 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:59:21,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:59:21,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:59:21,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:59:21,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:59:21,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:59:21,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:59:21,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:59:21,229 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:59:21,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:59:21,231 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:59:21,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:59:21,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:59:21,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:59:21,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:59:21,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:59:21,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:59:21,233 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:59:21,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:59:21,233 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:59:21,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:59:21,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:59:21,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:59:21,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:59:21,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:59:21,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:59:21,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:59:21,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:59:21,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:59:21,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:59:21,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:59:21,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:59:21,238 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:59:21,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:59:21,238 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_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b87483e693fd72a28f6c7edd484e610e6e0dbb17679c8092f6f9c9cd35d4acca [2022-11-25 16:59:21,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:59:21,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:59:21,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:59:21,592 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:59:21,592 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:59:21,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/safe023_tso.i [2022-11-25 16:59:24,807 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:59:25,044 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:59:25,045 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/sv-benchmarks/c/pthread-wmm/safe023_tso.i [2022-11-25 16:59:25,058 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/data/27e38178a/2f10893ef19a430e81d2f0157b0bfa90/FLAG203612ffb [2022-11-25 16:59:25,082 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/data/27e38178a/2f10893ef19a430e81d2f0157b0bfa90 [2022-11-25 16:59:25,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:59:25,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:59:25,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:59:25,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:59:25,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:59:25,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:59:25" (1/1) ... [2022-11-25 16:59:25,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7efb111a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25, skipping insertion in model container [2022-11-25 16:59:25,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:59:25" (1/1) ... [2022-11-25 16:59:25,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:59:25,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:59:25,326 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_47a2ee55-0acb-41b6-822e-ee07b36a6a04/sv-benchmarks/c/pthread-wmm/safe023_tso.i[945,958] [2022-11-25 16:59:25,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,557 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,557 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,572 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,573 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,574 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,574 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,574 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,576 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:59:25,589 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:59:25,612 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_47a2ee55-0acb-41b6-822e-ee07b36a6a04/sv-benchmarks/c/pthread-wmm/safe023_tso.i[945,958] [2022-11-25 16:59:25,651 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,658 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,658 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,663 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,664 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,664 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,674 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,675 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,675 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,676 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,676 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:59:25,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:59:25,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:59:25,734 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:59:25,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25 WrapperNode [2022-11-25 16:59:25,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:59:25,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:59:25,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:59:25,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:59:25,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25" (1/1) ... [2022-11-25 16:59:25,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25" (1/1) ... [2022-11-25 16:59:25,808 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-25 16:59:25,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:59:25,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:59:25,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:59:25,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:59:25,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25" (1/1) ... [2022-11-25 16:59:25,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25" (1/1) ... [2022-11-25 16:59:25,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25" (1/1) ... [2022-11-25 16:59:25,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25" (1/1) ... [2022-11-25 16:59:25,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25" (1/1) ... [2022-11-25 16:59:25,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25" (1/1) ... [2022-11-25 16:59:25,852 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25" (1/1) ... [2022-11-25 16:59:25,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25" (1/1) ... [2022-11-25 16:59:25,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:59:25,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:59:25,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:59:25,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:59:25,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25" (1/1) ... [2022-11-25 16:59:25,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:59:25,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:59:25,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:59:25,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:59:25,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:59:25,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 16:59:25,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:59:25,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:59:25,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:59:25,951 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 16:59:25,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 16:59:25,952 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 16:59:25,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 16:59:25,952 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-25 16:59:25,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-25 16:59:25,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:59:25,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 16:59:25,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:59:25,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:59:25,954 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:59:26,184 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:59:26,186 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:59:26,409 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:59:26,419 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:59:26,428 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 16:59:26,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:59:26 BoogieIcfgContainer [2022-11-25 16:59:26,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:59:26,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:59:26,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:59:26,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:59:26,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:59:25" (1/3) ... [2022-11-25 16:59:26,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4591891d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:59:26, skipping insertion in model container [2022-11-25 16:59:26,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:59:25" (2/3) ... [2022-11-25 16:59:26,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4591891d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:59:26, skipping insertion in model container [2022-11-25 16:59:26,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:59:26" (3/3) ... [2022-11-25 16:59:26,449 INFO L112 eAbstractionObserver]: Analyzing ICFG safe023_tso.i [2022-11-25 16:59:26,459 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:59:26,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:59:26,472 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 16:59:26,472 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:59:26,552 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 16:59:26,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-11-25 16:59:26,639 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-25 16:59:26,640 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:59:26,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-25 16:59:26,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-11-25 16:59:26,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-11-25 16:59:26,653 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:59:26,669 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 159 flow [2022-11-25 16:59:26,672 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 159 flow [2022-11-25 16:59:26,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 159 flow [2022-11-25 16:59:26,725 INFO L130 PetriNetUnfolder]: 1/75 cut-off events. [2022-11-25 16:59:26,725 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:59:26,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 1/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 37 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-11-25 16:59:26,742 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2022-11-25 16:59:29,607 INFO L134 LiptonReduction]: Checked pairs total: 2074 [2022-11-25 16:59:29,607 INFO L136 LiptonReduction]: Total number of compositions: 60 [2022-11-25 16:59:29,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:59:29,631 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;@63804052, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:59:29,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 16:59:29,638 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-11-25 16:59:29,638 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:59:29,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:29,639 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:29,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:59:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash -808545862, now seen corresponding path program 1 times [2022-11-25 16:59:29,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:29,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686010247] [2022-11-25 16:59:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:29,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:30,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:30,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686010247] [2022-11-25 16:59:30,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686010247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:30,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:30,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:59:30,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148103331] [2022-11-25 16:59:30,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:30,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:59:30,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:30,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:59:30,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:59:30,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 152 [2022-11-25 16:59:30,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:30,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:30,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 152 [2022-11-25 16:59:30,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:30,537 INFO L130 PetriNetUnfolder]: 424/734 cut-off events. [2022-11-25 16:59:30,537 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 16:59:30,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 734 events. 424/734 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3664 event pairs, 160 based on Foata normal form. 43/777 useless extension candidates. Maximal degree in co-relation 1476. Up to 392 conditions per place. [2022-11-25 16:59:30,550 INFO L137 encePairwiseOnDemand]: 145/152 looper letters, 21 selfloop transitions, 6 changer transitions 0/28 dead transitions. [2022-11-25 16:59:30,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 122 flow [2022-11-25 16:59:30,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:59:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:59:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2022-11-25 16:59:30,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5679824561403509 [2022-11-25 16:59:30,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2022-11-25 16:59:30,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2022-11-25 16:59:30,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:30,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2022-11-25 16:59:30,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:30,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:30,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:30,596 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 259 transitions. [2022-11-25 16:59:30,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 122 flow [2022-11-25 16:59:30,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 16:59:30,602 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2022-11-25 16:59:30,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2022-11-25 16:59:30,608 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2022-11-25 16:59:30,608 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2022-11-25 16:59:30,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:30,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:30,609 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:30,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:59:30,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:59:30,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:30,613 INFO L85 PathProgramCache]: Analyzing trace with hash 704881335, now seen corresponding path program 1 times [2022-11-25 16:59:30,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:30,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614372284] [2022-11-25 16:59:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:30,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:30,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:30,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614372284] [2022-11-25 16:59:30,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614372284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:30,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:30,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:59:30,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942617047] [2022-11-25 16:59:30,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:30,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:59:30,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:30,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:59:30,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:59:30,789 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 152 [2022-11-25 16:59:30,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:30,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:30,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 152 [2022-11-25 16:59:30,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:30,880 INFO L130 PetriNetUnfolder]: 326/585 cut-off events. [2022-11-25 16:59:30,880 INFO L131 PetriNetUnfolder]: For 270/271 co-relation queries the response was YES. [2022-11-25 16:59:30,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1536 conditions, 585 events. 326/585 cut-off events. For 270/271 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2933 event pairs, 111 based on Foata normal form. 8/574 useless extension candidates. Maximal degree in co-relation 1524. Up to 346 conditions per place. [2022-11-25 16:59:30,886 INFO L137 encePairwiseOnDemand]: 149/152 looper letters, 20 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2022-11-25 16:59:30,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 28 transitions, 154 flow [2022-11-25 16:59:30,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:59:30,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:59:30,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-11-25 16:59:30,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2022-11-25 16:59:30,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2022-11-25 16:59:30,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2022-11-25 16:59:30,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:30,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2022-11-25 16:59:30,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:30,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:30,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:30,892 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 3 states and 272 transitions. [2022-11-25 16:59:30,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 28 transitions, 154 flow [2022-11-25 16:59:30,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:59:30,896 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 85 flow [2022-11-25 16:59:30,896 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2022-11-25 16:59:30,897 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2022-11-25 16:59:30,897 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 85 flow [2022-11-25 16:59:30,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:30,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:30,898 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:30,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:59:30,898 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:59:30,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:30,899 INFO L85 PathProgramCache]: Analyzing trace with hash 704880839, now seen corresponding path program 1 times [2022-11-25 16:59:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:30,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167160723] [2022-11-25 16:59:30,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:30,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:31,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:31,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167160723] [2022-11-25 16:59:31,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167160723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:31,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:31,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:59:31,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785738520] [2022-11-25 16:59:31,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:31,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:59:31,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:31,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:59:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:59:31,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 152 [2022-11-25 16:59:31,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:31,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 152 [2022-11-25 16:59:31,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:31,262 INFO L130 PetriNetUnfolder]: 391/683 cut-off events. [2022-11-25 16:59:31,262 INFO L131 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2022-11-25 16:59:31,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 683 events. 391/683 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3411 event pairs, 51 based on Foata normal form. 1/684 useless extension candidates. Maximal degree in co-relation 1773. Up to 361 conditions per place. [2022-11-25 16:59:31,268 INFO L137 encePairwiseOnDemand]: 145/152 looper letters, 29 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2022-11-25 16:59:31,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 40 transitions, 220 flow [2022-11-25 16:59:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:59:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:59:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2022-11-25 16:59:31,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.569078947368421 [2022-11-25 16:59:31,270 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2022-11-25 16:59:31,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2022-11-25 16:59:31,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:31,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2022-11-25 16:59:31,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,275 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,276 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 85 flow. Second operand 4 states and 346 transitions. [2022-11-25 16:59:31,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 40 transitions, 220 flow [2022-11-25 16:59:31,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:59:31,279 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 154 flow [2022-11-25 16:59:31,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2022-11-25 16:59:31,281 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2022-11-25 16:59:31,281 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 154 flow [2022-11-25 16:59:31,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:31,282 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:31,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:59:31,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:59:31,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash 376484651, now seen corresponding path program 1 times [2022-11-25 16:59:31,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:31,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759485936] [2022-11-25 16:59:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:31,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:31,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:31,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759485936] [2022-11-25 16:59:31,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759485936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:31,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:31,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:59:31,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889081530] [2022-11-25 16:59:31,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:31,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:59:31,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:31,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:59:31,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:59:31,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 152 [2022-11-25 16:59:31,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:31,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 152 [2022-11-25 16:59:31,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:31,646 INFO L130 PetriNetUnfolder]: 465/822 cut-off events. [2022-11-25 16:59:31,646 INFO L131 PetriNetUnfolder]: For 645/645 co-relation queries the response was YES. [2022-11-25 16:59:31,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 822 events. 465/822 cut-off events. For 645/645 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4535 event pairs, 60 based on Foata normal form. 9/831 useless extension candidates. Maximal degree in co-relation 2456. Up to 336 conditions per place. [2022-11-25 16:59:31,654 INFO L137 encePairwiseOnDemand]: 145/152 looper letters, 33 selfloop transitions, 13 changer transitions 0/47 dead transitions. [2022-11-25 16:59:31,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 313 flow [2022-11-25 16:59:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:59:31,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:59:31,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2022-11-25 16:59:31,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5723684210526315 [2022-11-25 16:59:31,656 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 348 transitions. [2022-11-25 16:59:31,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 348 transitions. [2022-11-25 16:59:31,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:31,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 348 transitions. [2022-11-25 16:59:31,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,662 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,662 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 154 flow. Second operand 4 states and 348 transitions. [2022-11-25 16:59:31,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 313 flow [2022-11-25 16:59:31,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 313 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:59:31,669 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 239 flow [2022-11-25 16:59:31,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2022-11-25 16:59:31,671 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2022-11-25 16:59:31,672 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 239 flow [2022-11-25 16:59:31,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:31,673 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:31,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:59:31,673 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:59:31,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:31,674 INFO L85 PathProgramCache]: Analyzing trace with hash 376483690, now seen corresponding path program 1 times [2022-11-25 16:59:31,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:31,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700944146] [2022-11-25 16:59:31,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:31,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:31,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:31,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700944146] [2022-11-25 16:59:31,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700944146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:31,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:31,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:59:31,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388759275] [2022-11-25 16:59:31,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:31,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:59:31,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:31,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:59:31,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:59:31,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 152 [2022-11-25 16:59:31,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:31,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 152 [2022-11-25 16:59:31,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:31,937 INFO L130 PetriNetUnfolder]: 389/695 cut-off events. [2022-11-25 16:59:31,937 INFO L131 PetriNetUnfolder]: For 1665/1665 co-relation queries the response was YES. [2022-11-25 16:59:31,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2380 conditions, 695 events. 389/695 cut-off events. For 1665/1665 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3710 event pairs, 133 based on Foata normal form. 12/706 useless extension candidates. Maximal degree in co-relation 2359. Up to 419 conditions per place. [2022-11-25 16:59:31,943 INFO L137 encePairwiseOnDemand]: 149/152 looper letters, 29 selfloop transitions, 4 changer transitions 4/42 dead transitions. [2022-11-25 16:59:31,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 369 flow [2022-11-25 16:59:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:59:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:59:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2022-11-25 16:59:31,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6074561403508771 [2022-11-25 16:59:31,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2022-11-25 16:59:31,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2022-11-25 16:59:31,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:31,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2022-11-25 16:59:31,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,952 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 239 flow. Second operand 3 states and 277 transitions. [2022-11-25 16:59:31,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 369 flow [2022-11-25 16:59:31,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 365 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-25 16:59:31,961 INFO L231 Difference]: Finished difference. Result has 42 places, 27 transitions, 209 flow [2022-11-25 16:59:31,961 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=42, PETRI_TRANSITIONS=27} [2022-11-25 16:59:31,964 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2022-11-25 16:59:31,964 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 27 transitions, 209 flow [2022-11-25 16:59:31,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:31,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:31,967 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:31,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:59:31,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:59:31,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:31,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1488380326, now seen corresponding path program 1 times [2022-11-25 16:59:31,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:31,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757807444] [2022-11-25 16:59:31,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:31,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:32,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:32,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757807444] [2022-11-25 16:59:32,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757807444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:32,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:32,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:59:32,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861074536] [2022-11-25 16:59:32,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:32,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:59:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:32,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:59:32,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:59:32,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 152 [2022-11-25 16:59:32,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 27 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:32,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 152 [2022-11-25 16:59:32,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:32,212 INFO L130 PetriNetUnfolder]: 276/511 cut-off events. [2022-11-25 16:59:32,213 INFO L131 PetriNetUnfolder]: For 1323/1338 co-relation queries the response was YES. [2022-11-25 16:59:32,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 511 events. 276/511 cut-off events. For 1323/1338 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2495 event pairs, 78 based on Foata normal form. 30/530 useless extension candidates. Maximal degree in co-relation 1656. Up to 194 conditions per place. [2022-11-25 16:59:32,217 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 19 selfloop transitions, 4 changer transitions 11/38 dead transitions. [2022-11-25 16:59:32,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 309 flow [2022-11-25 16:59:32,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:59:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:59:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2022-11-25 16:59:32,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5838815789473685 [2022-11-25 16:59:32,219 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2022-11-25 16:59:32,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2022-11-25 16:59:32,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:32,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2022-11-25 16:59:32,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,224 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,224 INFO L175 Difference]: Start difference. First operand has 42 places, 27 transitions, 209 flow. Second operand 4 states and 355 transitions. [2022-11-25 16:59:32,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 309 flow [2022-11-25 16:59:32,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 293 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-25 16:59:32,230 INFO L231 Difference]: Finished difference. Result has 43 places, 20 transitions, 139 flow [2022-11-25 16:59:32,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=43, PETRI_TRANSITIONS=20} [2022-11-25 16:59:32,232 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2022-11-25 16:59:32,232 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 20 transitions, 139 flow [2022-11-25 16:59:32,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:32,233 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:32,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:59:32,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:59:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash 839082572, now seen corresponding path program 1 times [2022-11-25 16:59:32,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:32,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229367908] [2022-11-25 16:59:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:32,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:32,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:32,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229367908] [2022-11-25 16:59:32,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229367908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:32,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:32,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:59:32,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120546113] [2022-11-25 16:59:32,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:32,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:59:32,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:32,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:59:32,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:59:32,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 152 [2022-11-25 16:59:32,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 20 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:32,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 152 [2022-11-25 16:59:32,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:32,442 INFO L130 PetriNetUnfolder]: 102/220 cut-off events. [2022-11-25 16:59:32,442 INFO L131 PetriNetUnfolder]: For 752/762 co-relation queries the response was YES. [2022-11-25 16:59:32,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 220 events. 102/220 cut-off events. For 752/762 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 943 event pairs, 22 based on Foata normal form. 8/219 useless extension candidates. Maximal degree in co-relation 765. Up to 129 conditions per place. [2022-11-25 16:59:32,444 INFO L137 encePairwiseOnDemand]: 146/152 looper letters, 27 selfloop transitions, 6 changer transitions 6/44 dead transitions. [2022-11-25 16:59:32,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 367 flow [2022-11-25 16:59:32,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:59:32,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:59:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 442 transitions. [2022-11-25 16:59:32,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5815789473684211 [2022-11-25 16:59:32,446 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 442 transitions. [2022-11-25 16:59:32,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 442 transitions. [2022-11-25 16:59:32,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:32,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 442 transitions. [2022-11-25 16:59:32,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,451 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,451 INFO L175 Difference]: Start difference. First operand has 43 places, 20 transitions, 139 flow. Second operand 5 states and 442 transitions. [2022-11-25 16:59:32,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 367 flow [2022-11-25 16:59:32,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 264 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-11-25 16:59:32,454 INFO L231 Difference]: Finished difference. Result has 39 places, 25 transitions, 138 flow [2022-11-25 16:59:32,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2022-11-25 16:59:32,455 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2022-11-25 16:59:32,455 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 138 flow [2022-11-25 16:59:32,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:32,456 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:32,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:59:32,456 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:59:32,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:32,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1684205996, now seen corresponding path program 1 times [2022-11-25 16:59:32,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:32,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348435716] [2022-11-25 16:59:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:32,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:32,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:32,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348435716] [2022-11-25 16:59:32,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348435716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:32,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:32,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:59:32,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916549441] [2022-11-25 16:59:32,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:32,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:59:32,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:32,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:59:32,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:59:32,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 152 [2022-11-25 16:59:32,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:32,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 152 [2022-11-25 16:59:32,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:32,753 INFO L130 PetriNetUnfolder]: 89/206 cut-off events. [2022-11-25 16:59:32,753 INFO L131 PetriNetUnfolder]: For 398/422 co-relation queries the response was YES. [2022-11-25 16:59:32,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 206 events. 89/206 cut-off events. For 398/422 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 920 event pairs, 10 based on Foata normal form. 17/214 useless extension candidates. Maximal degree in co-relation 750. Up to 104 conditions per place. [2022-11-25 16:59:32,755 INFO L137 encePairwiseOnDemand]: 146/152 looper letters, 27 selfloop transitions, 11 changer transitions 12/55 dead transitions. [2022-11-25 16:59:32,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 407 flow [2022-11-25 16:59:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:59:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 16:59:32,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2022-11-25 16:59:32,758 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5761278195488722 [2022-11-25 16:59:32,758 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2022-11-25 16:59:32,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2022-11-25 16:59:32,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:32,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2022-11-25 16:59:32,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,763 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,763 INFO L175 Difference]: Start difference. First operand has 39 places, 25 transitions, 138 flow. Second operand 7 states and 613 transitions. [2022-11-25 16:59:32,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 407 flow [2022-11-25 16:59:32,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:59:32,766 INFO L231 Difference]: Finished difference. Result has 47 places, 28 transitions, 195 flow [2022-11-25 16:59:32,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2022-11-25 16:59:32,769 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2022-11-25 16:59:32,769 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 195 flow [2022-11-25 16:59:32,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:59:32,770 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:32,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:59:32,770 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 16:59:32,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:59:32,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1393046556, now seen corresponding path program 1 times [2022-11-25 16:59:32,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:59:32,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317449304] [2022-11-25 16:59:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:59:32,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:59:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:59:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:59:32,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:59:32,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317449304] [2022-11-25 16:59:32,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317449304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:59:32,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:59:32,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:59:32,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776249195] [2022-11-25 16:59:32,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:59:32,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 16:59:32,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:59:32,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 16:59:32,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:59:32,964 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 152 [2022-11-25 16:59:32,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:32,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:59:32,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 152 [2022-11-25 16:59:32,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:59:33,092 INFO L130 PetriNetUnfolder]: 80/187 cut-off events. [2022-11-25 16:59:33,093 INFO L131 PetriNetUnfolder]: For 578/600 co-relation queries the response was YES. [2022-11-25 16:59:33,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 187 events. 80/187 cut-off events. For 578/600 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 803 event pairs, 9 based on Foata normal form. 15/193 useless extension candidates. Maximal degree in co-relation 799. Up to 87 conditions per place. [2022-11-25 16:59:33,094 INFO L137 encePairwiseOnDemand]: 146/152 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2022-11-25 16:59:33,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 394 flow [2022-11-25 16:59:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:59:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 16:59:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 768 transitions. [2022-11-25 16:59:33,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2022-11-25 16:59:33,098 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 768 transitions. [2022-11-25 16:59:33,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 768 transitions. [2022-11-25 16:59:33,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:59:33,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 768 transitions. [2022-11-25 16:59:33,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.33333333333333) internal successors, (768), 9 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:33,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:33,104 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:33,104 INFO L175 Difference]: Start difference. First operand has 47 places, 28 transitions, 195 flow. Second operand 9 states and 768 transitions. [2022-11-25 16:59:33,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 394 flow [2022-11-25 16:59:33,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 346 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-25 16:59:33,108 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2022-11-25 16:59:33,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2022-11-25 16:59:33,109 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2022-11-25 16:59:33,109 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2022-11-25 16:59:33,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:59:33,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-25 16:59:33,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-25 16:59:33,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-25 16:59:33,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-25 16:59:33,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 16:59:33,119 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:59:33,123 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 16:59:33,123 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 16:59:33,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 04:59:33 BasicIcfg [2022-11-25 16:59:33,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 16:59:33,128 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 16:59:33,128 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 16:59:33,128 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 16:59:33,129 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:59:26" (3/4) ... [2022-11-25 16:59:33,132 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 16:59:33,139 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-25 16:59:33,139 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-25 16:59:33,139 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-25 16:59:33,146 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-25 16:59:33,146 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 16:59:33,146 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 16:59:33,147 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 16:59:33,186 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 16:59:33,186 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 16:59:33,187 INFO L158 Benchmark]: Toolchain (without parser) took 8101.13ms. Allocated memory was 190.8MB in the beginning and 230.7MB in the end (delta: 39.8MB). Free memory was 145.1MB in the beginning and 149.9MB in the end (delta: -4.8MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2022-11-25 16:59:33,187 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 146.8MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:59:33,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 647.93ms. Allocated memory is still 190.8MB. Free memory was 145.1MB in the beginning and 121.2MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-25 16:59:33,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.92ms. Allocated memory is still 190.8MB. Free memory was 121.2MB in the beginning and 119.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:59:33,188 INFO L158 Benchmark]: Boogie Preprocessor took 51.60ms. Allocated memory is still 190.8MB. Free memory was 119.1MB in the beginning and 117.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:59:33,189 INFO L158 Benchmark]: RCFGBuilder took 570.36ms. Allocated memory is still 190.8MB. Free memory was 117.8MB in the beginning and 104.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 16:59:33,189 INFO L158 Benchmark]: TraceAbstraction took 6693.10ms. Allocated memory was 190.8MB in the beginning and 230.7MB in the end (delta: 39.8MB). Free memory was 103.6MB in the beginning and 153.0MB in the end (delta: -49.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:59:33,190 INFO L158 Benchmark]: Witness Printer took 58.77ms. Allocated memory is still 230.7MB. Free memory was 153.0MB in the beginning and 149.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:59:33,191 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 146.8MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 647.93ms. Allocated memory is still 190.8MB. Free memory was 145.1MB in the beginning and 121.2MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.92ms. Allocated memory is still 190.8MB. Free memory was 121.2MB in the beginning and 119.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.60ms. Allocated memory is still 190.8MB. Free memory was 119.1MB in the beginning and 117.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 570.36ms. Allocated memory is still 190.8MB. Free memory was 117.8MB in the beginning and 104.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6693.10ms. Allocated memory was 190.8MB in the beginning and 230.7MB in the end (delta: 39.8MB). Free memory was 103.6MB in the beginning and 153.0MB in the end (delta: -49.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 58.77ms. Allocated memory is still 230.7MB. Free memory was 153.0MB in the beginning and 149.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 84 PlacesBefore, 27 PlacesAfterwards, 75 TransitionsBefore, 17 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2074 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1331, independent: 1250, independent conditional: 0, independent unconditional: 1250, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 817, independent: 774, independent conditional: 0, independent unconditional: 774, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 817, independent: 765, independent conditional: 0, independent unconditional: 765, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 191, independent: 37, independent conditional: 0, independent unconditional: 37, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1331, independent: 476, independent conditional: 0, independent unconditional: 476, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 817, unknown conditional: 0, unknown unconditional: 817] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 67, Positive conditional cache size: 0, Positive unconditional cache size: 67, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 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: 6.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 279 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 200 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 457 IncrementalHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 28 mSDtfsCounter, 457 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=4, InterpolantAutomatonStates: 42, 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, 1.3s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 16:59:33,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47a2ee55-0acb-41b6-822e-ee07b36a6a04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE