./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:17:31,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:17:31,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:17:31,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:17:31,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:17:31,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:17:31,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:17:31,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:17:31,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:17:31,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:17:31,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:17:31,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:17:31,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:17:31,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:17:31,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:17:31,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:17:31,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:17:31,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:17:31,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:17:31,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:17:31,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:17:31,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:17:31,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:17:31,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:17:31,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:17:31,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:17:31,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:17:31,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:17:31,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:17:31,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:17:31,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:17:31,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:17:31,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:17:31,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:17:31,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:17:31,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:17:31,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:17:31,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:17:31,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:17:31,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:17:31,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:17:31,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:17:31,259 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:17:31,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:17:31,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:17:31,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:17:31,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:17:31,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:17:31,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:17:31,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:17:31,270 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:17:31,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:17:31,270 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:17:31,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:17:31,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:17:31,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:17:31,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:17:31,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:17:31,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:17:31,271 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:17:31,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:17:31,271 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:17:31,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:17:31,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:17:31,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:17:31,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:17:31,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:17:31,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:17:31,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:17:31,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:17:31,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:17:31,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:17:31,273 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:17:31,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:17:31,273 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:17:31,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:17:31,273 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:17:31,273 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_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f [2022-12-13 18:17:31,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:17:31,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:17:31,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:17:31,461 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:17:31,462 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:17:31,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe017_tso.i [2022-12-13 18:17:33,948 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:17:34,166 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:17:34,166 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/sv-benchmarks/c/pthread-wmm/safe017_tso.i [2022-12-13 18:17:34,176 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/data/daff321c7/8de5c8a46575476ea9018c4662b1f3b1/FLAGfc5459a1b [2022-12-13 18:17:34,524 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/data/daff321c7/8de5c8a46575476ea9018c4662b1f3b1 [2022-12-13 18:17:34,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:17:34,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:17:34,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:17:34,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:17:34,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:17:34,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:17:34" (1/1) ... [2022-12-13 18:17:34,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa156c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34, skipping insertion in model container [2022-12-13 18:17:34,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:17:34" (1/1) ... [2022-12-13 18:17:34,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:17:34,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:17:34,687 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_13e2cfda-a7ec-479d-80a3-b838fd415814/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2022-12-13 18:17:34,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:17:34,798 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:17:34,806 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_13e2cfda-a7ec-479d-80a3-b838fd415814/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2022-12-13 18:17:34,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:17:34,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:17:34,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:17:34,851 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:17:34,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34 WrapperNode [2022-12-13 18:17:34,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:17:34,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:17:34,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:17:34,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:17:34,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34" (1/1) ... [2022-12-13 18:17:34,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34" (1/1) ... [2022-12-13 18:17:34,880 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2022-12-13 18:17:34,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:17:34,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:17:34,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:17:34,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:17:34,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34" (1/1) ... [2022-12-13 18:17:34,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34" (1/1) ... [2022-12-13 18:17:34,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34" (1/1) ... [2022-12-13 18:17:34,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34" (1/1) ... [2022-12-13 18:17:34,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34" (1/1) ... [2022-12-13 18:17:34,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34" (1/1) ... [2022-12-13 18:17:34,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34" (1/1) ... [2022-12-13 18:17:34,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34" (1/1) ... [2022-12-13 18:17:34,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:17:34,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:17:34,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:17:34,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:17:34,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34" (1/1) ... [2022-12-13 18:17:34,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:17:34,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:17:34,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:17:34,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:17:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:17:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 18:17:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:17:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:17:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:17:34,955 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 18:17:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 18:17:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 18:17:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 18:17:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 18:17:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 18:17:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:17:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 18:17:34,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:17:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:17:34,958 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 18:17:35,054 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:17:35,055 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:17:35,182 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:17:35,188 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:17:35,189 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:17:35,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:17:35 BoogieIcfgContainer [2022-12-13 18:17:35,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:17:35,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:17:35,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:17:35,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:17:35,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:17:34" (1/3) ... [2022-12-13 18:17:35,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e02d1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:17:35, skipping insertion in model container [2022-12-13 18:17:35,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:34" (2/3) ... [2022-12-13 18:17:35,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e02d1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:17:35, skipping insertion in model container [2022-12-13 18:17:35,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:17:35" (3/3) ... [2022-12-13 18:17:35,196 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2022-12-13 18:17:35,203 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:17:35,210 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:17:35,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:17:35,211 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:17:35,254 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:17:35,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 89 transitions, 193 flow [2022-12-13 18:17:35,319 INFO L130 PetriNetUnfolder]: 2/86 cut-off events. [2022-12-13 18:17:35,319 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:17:35,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 86 events. 2/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-12-13 18:17:35,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 89 transitions, 193 flow [2022-12-13 18:17:35,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 72 transitions, 153 flow [2022-12-13 18:17:35,328 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:17:35,335 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 72 transitions, 153 flow [2022-12-13 18:17:35,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 72 transitions, 153 flow [2022-12-13 18:17:35,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 72 transitions, 153 flow [2022-12-13 18:17:35,352 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-12-13 18:17:35,352 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:17:35,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 1/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 34 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-12-13 18:17:35,353 INFO L119 LiptonReduction]: Number of co-enabled transitions 1042 [2022-12-13 18:17:36,650 INFO L134 LiptonReduction]: Checked pairs total: 1870 [2022-12-13 18:17:36,650 INFO L136 LiptonReduction]: Total number of compositions: 62 [2022-12-13 18:17:36,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:17:36,667 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;@6e9bc352, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:17:36,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 18:17:36,672 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2022-12-13 18:17:36,672 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:17:36,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:17:36,673 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:36,673 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)] === [2022-12-13 18:17:36,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:36,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1151809206, now seen corresponding path program 1 times [2022-12-13 18:17:36,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:36,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133768250] [2022-12-13 18:17:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:36,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:17:37,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:37,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133768250] [2022-12-13 18:17:37,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133768250] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:17:37,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:17:37,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:17:37,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363166229] [2022-12-13 18:17:37,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:17:37,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:17:37,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:37,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:17:37,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:17:37,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 151 [2022-12-13 18:17:37,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:17:37,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 151 [2022-12-13 18:17:37,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:17:37,215 INFO L130 PetriNetUnfolder]: 408/676 cut-off events. [2022-12-13 18:17:37,215 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 18:17:37,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 676 events. 408/676 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2901 event pairs, 157 based on Foata normal form. 37/713 useless extension candidates. Maximal degree in co-relation 1388. Up to 382 conditions per place. [2022-12-13 18:17:37,221 INFO L137 encePairwiseOnDemand]: 143/151 looper letters, 23 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2022-12-13 18:17:37,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 131 flow [2022-12-13 18:17:37,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:17:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:17:37,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2022-12-13 18:17:37,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5673289183222958 [2022-12-13 18:17:37,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2022-12-13 18:17:37,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2022-12-13 18:17:37,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:17:37,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2022-12-13 18:17:37,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,247 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 257 transitions. [2022-12-13 18:17:37,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 131 flow [2022-12-13 18:17:37,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 29 transitions, 126 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 18:17:37,252 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 84 flow [2022-12-13 18:17:37,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2022-12-13 18:17:37,257 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2022-12-13 18:17:37,257 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 84 flow [2022-12-13 18:17:37,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:17:37,257 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:37,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:17:37,258 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)] === [2022-12-13 18:17:37,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:37,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1346346474, now seen corresponding path program 1 times [2022-12-13 18:17:37,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:37,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037248288] [2022-12-13 18:17:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:37,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:17:37,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:37,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037248288] [2022-12-13 18:17:37,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037248288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:17:37,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:17:37,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:17:37,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836765495] [2022-12-13 18:17:37,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:17:37,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:17:37,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:37,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:17:37,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:17:37,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 151 [2022-12-13 18:17:37,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:17:37,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 151 [2022-12-13 18:17:37,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:17:37,469 INFO L130 PetriNetUnfolder]: 380/633 cut-off events. [2022-12-13 18:17:37,469 INFO L131 PetriNetUnfolder]: For 267/267 co-relation queries the response was YES. [2022-12-13 18:17:37,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 633 events. 380/633 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2575 event pairs, 85 based on Foata normal form. 9/642 useless extension candidates. Maximal degree in co-relation 1751. Up to 264 conditions per place. [2022-12-13 18:17:37,476 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 26 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2022-12-13 18:17:37,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 190 flow [2022-12-13 18:17:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:17:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:17:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2022-12-13 18:17:37,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5480132450331126 [2022-12-13 18:17:37,478 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 331 transitions. [2022-12-13 18:17:37,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 331 transitions. [2022-12-13 18:17:37,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:17:37,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 331 transitions. [2022-12-13 18:17:37,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,481 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,481 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 84 flow. Second operand 4 states and 331 transitions. [2022-12-13 18:17:37,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 190 flow [2022-12-13 18:17:37,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:17:37,483 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 120 flow [2022-12-13 18:17:37,483 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2022-12-13 18:17:37,483 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2022-12-13 18:17:37,484 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 120 flow [2022-12-13 18:17:37,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,484 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:17:37,484 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:37,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:17:37,484 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)] === [2022-12-13 18:17:37,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:37,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1346345637, now seen corresponding path program 1 times [2022-12-13 18:17:37,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:37,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720486184] [2022-12-13 18:17:37,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:37,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:37,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:17:37,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:37,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720486184] [2022-12-13 18:17:37,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720486184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:17:37,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:17:37,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:17:37,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169895070] [2022-12-13 18:17:37,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:17:37,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:17:37,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:37,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:17:37,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:17:37,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 151 [2022-12-13 18:17:37,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:17:37,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 151 [2022-12-13 18:17:37,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:17:37,673 INFO L130 PetriNetUnfolder]: 360/603 cut-off events. [2022-12-13 18:17:37,673 INFO L131 PetriNetUnfolder]: For 516/516 co-relation queries the response was YES. [2022-12-13 18:17:37,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1841 conditions, 603 events. 360/603 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2476 event pairs, 55 based on Foata normal form. 4/607 useless extension candidates. Maximal degree in co-relation 1826. Up to 302 conditions per place. [2022-12-13 18:17:37,677 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 33 selfloop transitions, 14 changer transitions 0/47 dead transitions. [2022-12-13 18:17:37,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 47 transitions, 316 flow [2022-12-13 18:17:37,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:17:37,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:17:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2022-12-13 18:17:37,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5612582781456954 [2022-12-13 18:17:37,679 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 339 transitions. [2022-12-13 18:17:37,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 339 transitions. [2022-12-13 18:17:37,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:17:37,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 339 transitions. [2022-12-13 18:17:37,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2022-12-13 18:17:37,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,683 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,684 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 120 flow. Second operand 4 states and 339 transitions. [2022-12-13 18:17:37,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 47 transitions, 316 flow [2022-12-13 18:17:37,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:17:37,687 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 244 flow [2022-12-13 18:17:37,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2022-12-13 18:17:37,688 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2022-12-13 18:17:37,688 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 244 flow [2022-12-13 18:17:37,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:17:37,688 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:37,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:17:37,689 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)] === [2022-12-13 18:17:37,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:37,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1212934608, now seen corresponding path program 1 times [2022-12-13 18:17:37,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:37,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178069070] [2022-12-13 18:17:37,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:37,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:17:37,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:37,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178069070] [2022-12-13 18:17:37,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178069070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:17:37,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:17:37,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:17:37,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312757386] [2022-12-13 18:17:37,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:17:37,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:17:37,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:37,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:17:37,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:17:37,774 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 151 [2022-12-13 18:17:37,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:17:37,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 151 [2022-12-13 18:17:37,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:17:37,871 INFO L130 PetriNetUnfolder]: 351/588 cut-off events. [2022-12-13 18:17:37,871 INFO L131 PetriNetUnfolder]: For 1027/1027 co-relation queries the response was YES. [2022-12-13 18:17:37,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 588 events. 351/588 cut-off events. For 1027/1027 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2373 event pairs, 52 based on Foata normal form. 2/590 useless extension candidates. Maximal degree in co-relation 2100. Up to 293 conditions per place. [2022-12-13 18:17:37,875 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 35 selfloop transitions, 17 changer transitions 0/52 dead transitions. [2022-12-13 18:17:37,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 425 flow [2022-12-13 18:17:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:17:37,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:17:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2022-12-13 18:17:37,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5629139072847682 [2022-12-13 18:17:37,877 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2022-12-13 18:17:37,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2022-12-13 18:17:37,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:17:37,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2022-12-13 18:17:37,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,880 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,880 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 244 flow. Second operand 4 states and 340 transitions. [2022-12-13 18:17:37,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 425 flow [2022-12-13 18:17:37,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 425 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:17:37,884 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 313 flow [2022-12-13 18:17:37,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2022-12-13 18:17:37,885 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2022-12-13 18:17:37,885 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 313 flow [2022-12-13 18:17:37,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:17:37,885 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:37,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:17:37,886 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)] === [2022-12-13 18:17:37,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1053739123, now seen corresponding path program 1 times [2022-12-13 18:17:37,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:37,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378371434] [2022-12-13 18:17:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:37,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:17:37,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:37,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378371434] [2022-12-13 18:17:37,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378371434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:17:37,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:17:37,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:17:37,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941400034] [2022-12-13 18:17:37,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:17:37,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:17:37,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:37,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:17:37,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:17:37,967 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 151 [2022-12-13 18:17:37,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:37,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:17:37,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 151 [2022-12-13 18:17:37,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:17:38,059 INFO L130 PetriNetUnfolder]: 374/637 cut-off events. [2022-12-13 18:17:38,059 INFO L131 PetriNetUnfolder]: For 1537/1537 co-relation queries the response was YES. [2022-12-13 18:17:38,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2428 conditions, 637 events. 374/637 cut-off events. For 1537/1537 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2709 event pairs, 67 based on Foata normal form. 6/643 useless extension candidates. Maximal degree in co-relation 2406. Up to 295 conditions per place. [2022-12-13 18:17:38,062 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 33 selfloop transitions, 19 changer transitions 1/53 dead transitions. [2022-12-13 18:17:38,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 473 flow [2022-12-13 18:17:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:17:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:17:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2022-12-13 18:17:38,064 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5629139072847682 [2022-12-13 18:17:38,064 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2022-12-13 18:17:38,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2022-12-13 18:17:38,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:17:38,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2022-12-13 18:17:38,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,066 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,066 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 313 flow. Second operand 4 states and 340 transitions. [2022-12-13 18:17:38,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 473 flow [2022-12-13 18:17:38,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:17:38,070 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 368 flow [2022-12-13 18:17:38,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2022-12-13 18:17:38,071 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2022-12-13 18:17:38,071 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 368 flow [2022-12-13 18:17:38,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:17:38,071 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:38,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:17:38,072 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)] === [2022-12-13 18:17:38,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1053786212, now seen corresponding path program 1 times [2022-12-13 18:17:38,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:38,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979549722] [2022-12-13 18:17:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:38,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:17:38,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:38,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979549722] [2022-12-13 18:17:38,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979549722] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:17:38,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:17:38,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:17:38,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286654244] [2022-12-13 18:17:38,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:17:38,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:17:38,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:38,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:17:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:17:38,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 151 [2022-12-13 18:17:38,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:17:38,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 151 [2022-12-13 18:17:38,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:17:38,202 INFO L130 PetriNetUnfolder]: 180/357 cut-off events. [2022-12-13 18:17:38,203 INFO L131 PetriNetUnfolder]: For 1447/1460 co-relation queries the response was YES. [2022-12-13 18:17:38,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 357 events. 180/357 cut-off events. For 1447/1460 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1555 event pairs, 45 based on Foata normal form. 23/375 useless extension candidates. Maximal degree in co-relation 1374. Up to 281 conditions per place. [2022-12-13 18:17:38,204 INFO L137 encePairwiseOnDemand]: 146/151 looper letters, 39 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2022-12-13 18:17:38,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 600 flow [2022-12-13 18:17:38,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:17:38,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:17:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2022-12-13 18:17:38,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5783664459161147 [2022-12-13 18:17:38,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2022-12-13 18:17:38,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2022-12-13 18:17:38,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:17:38,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2022-12-13 18:17:38,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-12-13 18:17:38,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,208 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 368 flow. Second operand 3 states and 262 transitions. [2022-12-13 18:17:38,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 600 flow [2022-12-13 18:17:38,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 592 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 18:17:38,211 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 388 flow [2022-12-13 18:17:38,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2022-12-13 18:17:38,211 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2022-12-13 18:17:38,212 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 388 flow [2022-12-13 18:17:38,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:17:38,212 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:38,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:17:38,212 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)] === [2022-12-13 18:17:38,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1193790923, now seen corresponding path program 1 times [2022-12-13 18:17:38,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:38,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225867109] [2022-12-13 18:17:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:38,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:38,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:17:38,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:38,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225867109] [2022-12-13 18:17:38,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225867109] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:17:38,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:17:38,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:17:38,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050883759] [2022-12-13 18:17:38,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:17:38,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:17:38,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:38,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:17:38,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:17:38,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 151 [2022-12-13 18:17:38,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:17:38,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 151 [2022-12-13 18:17:38,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:17:38,340 INFO L130 PetriNetUnfolder]: 109/237 cut-off events. [2022-12-13 18:17:38,340 INFO L131 PetriNetUnfolder]: For 927/952 co-relation queries the response was YES. [2022-12-13 18:17:38,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1120 conditions, 237 events. 109/237 cut-off events. For 927/952 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 942 event pairs, 15 based on Foata normal form. 42/276 useless extension candidates. Maximal degree in co-relation 1091. Up to 115 conditions per place. [2022-12-13 18:17:38,341 INFO L137 encePairwiseOnDemand]: 146/151 looper letters, 44 selfloop transitions, 7 changer transitions 2/63 dead transitions. [2022-12-13 18:17:38,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 694 flow [2022-12-13 18:17:38,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:17:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:17:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2022-12-13 18:17:38,343 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5778145695364238 [2022-12-13 18:17:38,343 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 349 transitions. [2022-12-13 18:17:38,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 349 transitions. [2022-12-13 18:17:38,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:17:38,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 349 transitions. [2022-12-13 18:17:38,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,344 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,345 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 388 flow. Second operand 4 states and 349 transitions. [2022-12-13 18:17:38,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 694 flow [2022-12-13 18:17:38,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 690 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:17:38,347 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 417 flow [2022-12-13 18:17:38,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=417, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2022-12-13 18:17:38,348 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 24 predicate places. [2022-12-13 18:17:38,348 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 417 flow [2022-12-13 18:17:38,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:17:38,349 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:38,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:17:38,349 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)] === [2022-12-13 18:17:38,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:38,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1689771799, now seen corresponding path program 1 times [2022-12-13 18:17:38,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:38,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339818987] [2022-12-13 18:17:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:38,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:17:38,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:38,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339818987] [2022-12-13 18:17:38,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339818987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:17:38,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:17:38,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:17:38,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451791170] [2022-12-13 18:17:38,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:17:38,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:17:38,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:38,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:17:38,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:17:38,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 151 [2022-12-13 18:17:38,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:17:38,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 151 [2022-12-13 18:17:38,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:17:38,508 INFO L130 PetriNetUnfolder]: 184/397 cut-off events. [2022-12-13 18:17:38,508 INFO L131 PetriNetUnfolder]: For 2031/2031 co-relation queries the response was YES. [2022-12-13 18:17:38,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 397 events. 184/397 cut-off events. For 2031/2031 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1837 event pairs, 33 based on Foata normal form. 7/404 useless extension candidates. Maximal degree in co-relation 2095. Up to 221 conditions per place. [2022-12-13 18:17:38,510 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 37 selfloop transitions, 11 changer transitions 27/75 dead transitions. [2022-12-13 18:17:38,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 75 transitions, 826 flow [2022-12-13 18:17:38,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:17:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:17:38,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 417 transitions. [2022-12-13 18:17:38,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.552317880794702 [2022-12-13 18:17:38,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 417 transitions. [2022-12-13 18:17:38,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 417 transitions. [2022-12-13 18:17:38,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:17:38,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 417 transitions. [2022-12-13 18:17:38,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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) [2022-12-13 18:17:38,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,514 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 417 flow. Second operand 5 states and 417 transitions. [2022-12-13 18:17:38,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 75 transitions, 826 flow [2022-12-13 18:17:38,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 778 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-13 18:17:38,518 INFO L231 Difference]: Finished difference. Result has 52 places, 30 transitions, 304 flow [2022-12-13 18:17:38,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=52, PETRI_TRANSITIONS=30} [2022-12-13 18:17:38,518 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2022-12-13 18:17:38,518 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 30 transitions, 304 flow [2022-12-13 18:17:38,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:17:38,519 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:38,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:17:38,519 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)] === [2022-12-13 18:17:38,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:38,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1962197844, now seen corresponding path program 1 times [2022-12-13 18:17:38,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:38,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546174173] [2022-12-13 18:17:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:38,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:17:38,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:38,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546174173] [2022-12-13 18:17:38,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546174173] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:17:38,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:17:38,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:17:38,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559402643] [2022-12-13 18:17:38,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:17:38,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:17:38,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:38,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:17:38,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:17:38,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 151 [2022-12-13 18:17:38,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 30 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:17:38,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 151 [2022-12-13 18:17:38,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:17:38,706 INFO L130 PetriNetUnfolder]: 56/131 cut-off events. [2022-12-13 18:17:38,706 INFO L131 PetriNetUnfolder]: For 663/701 co-relation queries the response was YES. [2022-12-13 18:17:38,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 131 events. 56/131 cut-off events. For 663/701 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 444 event pairs, 8 based on Foata normal form. 32/160 useless extension candidates. Maximal degree in co-relation 628. Up to 49 conditions per place. [2022-12-13 18:17:38,707 INFO L137 encePairwiseOnDemand]: 146/151 looper letters, 17 selfloop transitions, 10 changer transitions 16/45 dead transitions. [2022-12-13 18:17:38,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 534 flow [2022-12-13 18:17:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:17:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:17:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 428 transitions. [2022-12-13 18:17:38,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5668874172185431 [2022-12-13 18:17:38,709 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 428 transitions. [2022-12-13 18:17:38,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 428 transitions. [2022-12-13 18:17:38,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:17:38,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 428 transitions. [2022-12-13 18:17:38,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,712 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,712 INFO L175 Difference]: Start difference. First operand has 52 places, 30 transitions, 304 flow. Second operand 5 states and 428 transitions. [2022-12-13 18:17:38,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 534 flow [2022-12-13 18:17:38,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 400 flow, removed 4 selfloop flow, removed 11 redundant places. [2022-12-13 18:17:38,714 INFO L231 Difference]: Finished difference. Result has 46 places, 22 transitions, 166 flow [2022-12-13 18:17:38,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=46, PETRI_TRANSITIONS=22} [2022-12-13 18:17:38,715 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2022-12-13 18:17:38,715 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 22 transitions, 166 flow [2022-12-13 18:17:38,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:17:38,715 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:38,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:17:38,716 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 18:17:38,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:38,716 INFO L85 PathProgramCache]: Analyzing trace with hash -412273468, now seen corresponding path program 1 times [2022-12-13 18:17:38,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:38,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117940293] [2022-12-13 18:17:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:38,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:17:38,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:38,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117940293] [2022-12-13 18:17:38,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117940293] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:17:38,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:17:38,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:17:38,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259053611] [2022-12-13 18:17:38,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:17:38,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:17:38,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:38,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:17:38,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:17:38,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 151 [2022-12-13 18:17:38,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 22 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:17:38,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 151 [2022-12-13 18:17:38,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:17:38,848 INFO L130 PetriNetUnfolder]: 23/59 cut-off events. [2022-12-13 18:17:38,848 INFO L131 PetriNetUnfolder]: For 153/153 co-relation queries the response was YES. [2022-12-13 18:17:38,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 59 events. 23/59 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 270. Up to 18 conditions per place. [2022-12-13 18:17:38,848 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2022-12-13 18:17:38,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 290 flow [2022-12-13 18:17:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:17:38,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:17:38,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 477 transitions. [2022-12-13 18:17:38,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5264900662251656 [2022-12-13 18:17:38,850 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 477 transitions. [2022-12-13 18:17:38,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 477 transitions. [2022-12-13 18:17:38,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:17:38,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 477 transitions. [2022-12-13 18:17:38,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,852 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,852 INFO L175 Difference]: Start difference. First operand has 46 places, 22 transitions, 166 flow. Second operand 6 states and 477 transitions. [2022-12-13 18:17:38,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 290 flow [2022-12-13 18:17:38,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 208 flow, removed 8 selfloop flow, removed 16 redundant places. [2022-12-13 18:17:38,853 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2022-12-13 18:17:38,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2022-12-13 18:17:38,854 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2022-12-13 18:17:38,854 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2022-12-13 18:17:38,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:17:38,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-13 18:17:38,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-13 18:17:38,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 18:17:38,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-13 18:17:38,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:17:38,857 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:38,859 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 18:17:38,859 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:17:38,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:17:38 BasicIcfg [2022-12-13 18:17:38,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:17:38,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:17:38,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:17:38,862 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:17:38,862 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:17:35" (3/4) ... [2022-12-13 18:17:38,865 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 18:17:38,870 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-13 18:17:38,870 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-13 18:17:38,870 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-13 18:17:38,873 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-13 18:17:38,873 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 18:17:38,873 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 18:17:38,873 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 18:17:38,895 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:17:38,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:17:38,895 INFO L158 Benchmark]: Toolchain (without parser) took 4368.42ms. Allocated memory was 134.2MB in the beginning and 180.4MB in the end (delta: 46.1MB). Free memory was 99.2MB in the beginning and 46.6MB in the end (delta: 52.6MB). Peak memory consumption was 100.2MB. Max. memory is 16.1GB. [2022-12-13 18:17:38,895 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 134.2MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:17:38,896 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.52ms. Allocated memory is still 134.2MB. Free memory was 99.2MB in the beginning and 76.6MB in the end (delta: 22.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 18:17:38,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.58ms. Allocated memory is still 134.2MB. Free memory was 76.1MB in the beginning and 74.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:17:38,896 INFO L158 Benchmark]: Boogie Preprocessor took 16.30ms. Allocated memory is still 134.2MB. Free memory was 74.5MB in the beginning and 72.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:17:38,896 INFO L158 Benchmark]: RCFGBuilder took 293.12ms. Allocated memory is still 134.2MB. Free memory was 72.8MB in the beginning and 59.4MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 18:17:38,896 INFO L158 Benchmark]: TraceAbstraction took 3669.42ms. Allocated memory was 134.2MB in the beginning and 180.4MB in the end (delta: 46.1MB). Free memory was 58.9MB in the beginning and 48.7MB in the end (delta: 10.2MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2022-12-13 18:17:38,897 INFO L158 Benchmark]: Witness Printer took 32.82ms. Allocated memory is still 180.4MB. Free memory was 48.7MB in the beginning and 46.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:17:38,899 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 134.2MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.52ms. Allocated memory is still 134.2MB. Free memory was 99.2MB in the beginning and 76.6MB in the end (delta: 22.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.58ms. Allocated memory is still 134.2MB. Free memory was 76.1MB in the beginning and 74.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.30ms. Allocated memory is still 134.2MB. Free memory was 74.5MB in the beginning and 72.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 293.12ms. Allocated memory is still 134.2MB. Free memory was 72.8MB in the beginning and 59.4MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3669.42ms. Allocated memory was 134.2MB in the beginning and 180.4MB in the end (delta: 46.1MB). Free memory was 58.9MB in the beginning and 48.7MB in the end (delta: 10.2MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. * Witness Printer took 32.82ms. Allocated memory is still 180.4MB. Free memory was 48.7MB in the beginning and 46.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 81 PlacesBefore, 26 PlacesAfterwards, 72 TransitionsBefore, 17 TransitionsAfterwards, 1042 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 62 TotalNumberOfCompositions, 1870 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1001, independent: 922, independent conditional: 0, independent unconditional: 922, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 568, independent: 536, independent conditional: 0, independent unconditional: 536, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1001, independent: 386, independent conditional: 0, independent unconditional: 386, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 568, unknown conditional: 0, unknown unconditional: 568] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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, 111 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: 3.6s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 311 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 209 mSDsluCounter, 99 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 511 IncrementalHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 51 mSDtfsCounter, 511 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=417occurred in iteration=7, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 465 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2022-12-13 18:17:38,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2cfda-a7ec-479d-80a3-b838fd415814/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE