./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/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_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/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_b487e28a-3a72-47b6-a46a-77c5f77a712d/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 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 --- 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 16:43:30,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:43:30,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:43:30,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:43:30,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:43:30,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:43:30,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:43:30,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:43:30,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:43:30,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:43:30,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:43:30,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:43:30,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:43:30,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:43:30,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:43:30,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:43:30,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:43:30,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:43:30,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:43:30,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:43:30,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:43:30,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:43:30,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:43:30,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:43:30,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:43:30,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:43:30,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:43:30,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:43:30,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:43:30,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:43:30,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:43:30,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:43:30,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:43:30,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:43:30,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:43:30,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:43:30,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:43:30,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:43:30,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:43:30,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:43:30,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:43:30,238 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:43:30,264 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:43:30,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:43:30,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:43:30,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:43:30,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:43:30,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:43:30,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:43:30,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:43:30,266 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:43:30,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:43:30,266 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:43:30,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:43:30,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:43:30,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:43:30,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:43:30,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:43:30,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:43:30,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:43:30,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:43:30,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:43:30,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:43:30,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:43:30,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:43:30,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:43:30,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:43:30,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:43:30,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:43:30,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:43:30,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:43:30,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:43:30,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:43:30,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:43:30,270 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:43:30,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:43:30,277 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:43:30,277 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_b487e28a-3a72-47b6-a46a-77c5f77a712d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 [2022-12-13 16:43:30,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:43:30,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:43:30,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:43:30,470 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:43:30,470 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:43:30,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-12-13 16:43:33,041 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:43:33,176 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:43:33,177 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-12-13 16:43:33,183 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/data/806bcd2a7/1cf38285b4fc4a4b8c40ce4bfacc92bf/FLAG4f4ad052d [2022-12-13 16:43:33,597 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/data/806bcd2a7/1cf38285b4fc4a4b8c40ce4bfacc92bf [2022-12-13 16:43:33,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:43:33,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:43:33,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:43:33,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:43:33,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:43:33,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:43:33" (1/1) ... [2022-12-13 16:43:33,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d196751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33, skipping insertion in model container [2022-12-13 16:43:33,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:43:33" (1/1) ... [2022-12-13 16:43:33,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:43:33,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:43:33,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,783 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_b487e28a-3a72-47b6-a46a-77c5f77a712d/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-12-13 16:43:33,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:43:33,799 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:43:33,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:43:33,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:43:33,825 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_b487e28a-3a72-47b6-a46a-77c5f77a712d/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-12-13 16:43:33,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:43:33,837 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:43:33,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33 WrapperNode [2022-12-13 16:43:33,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:43:33,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:43:33,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:43:33,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:43:33,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33" (1/1) ... [2022-12-13 16:43:33,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33" (1/1) ... [2022-12-13 16:43:33,881 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 333 [2022-12-13 16:43:33,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:43:33,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:43:33,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:43:33,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:43:33,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33" (1/1) ... [2022-12-13 16:43:33,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33" (1/1) ... [2022-12-13 16:43:33,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33" (1/1) ... [2022-12-13 16:43:33,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33" (1/1) ... [2022-12-13 16:43:33,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33" (1/1) ... [2022-12-13 16:43:33,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33" (1/1) ... [2022-12-13 16:43:33,913 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33" (1/1) ... [2022-12-13 16:43:33,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33" (1/1) ... [2022-12-13 16:43:33,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:43:33,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:43:33,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:43:33,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:43:33,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33" (1/1) ... [2022-12-13 16:43:33,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:43:33,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:43:33,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:43:33,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:43:33,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:43:33,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:43:33,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:43:33,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:43:33,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 16:43:33,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 16:43:33,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 16:43:33,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 16:43:33,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 16:43:33,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 16:43:33,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:43:33,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 16:43:33,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 16:43:33,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:43:33,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:43:33,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:43:33,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:43:33,990 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 16:43:34,072 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:43:34,074 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:43:34,412 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:43:34,551 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:43:34,551 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 16:43:34,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:43:34 BoogieIcfgContainer [2022-12-13 16:43:34,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:43:34,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:43:34,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:43:34,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:43:34,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:43:33" (1/3) ... [2022-12-13 16:43:34,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61885a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:43:34, skipping insertion in model container [2022-12-13 16:43:34,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:43:33" (2/3) ... [2022-12-13 16:43:34,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61885a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:43:34, skipping insertion in model container [2022-12-13 16:43:34,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:43:34" (3/3) ... [2022-12-13 16:43:34,562 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2022-12-13 16:43:34,570 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:43:34,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:43:34,577 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:43:34,577 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:43:34,637 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 16:43:34,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 254 transitions, 532 flow [2022-12-13 16:43:34,722 INFO L130 PetriNetUnfolder]: 19/251 cut-off events. [2022-12-13 16:43:34,722 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:43:34,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 251 events. 19/251 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 137 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 214. Up to 2 conditions per place. [2022-12-13 16:43:34,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 254 transitions, 532 flow [2022-12-13 16:43:34,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 240 transitions, 498 flow [2022-12-13 16:43:34,733 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:43:34,740 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 240 transitions, 498 flow [2022-12-13 16:43:34,742 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 240 transitions, 498 flow [2022-12-13 16:43:34,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 240 transitions, 498 flow [2022-12-13 16:43:34,772 INFO L130 PetriNetUnfolder]: 19/240 cut-off events. [2022-12-13 16:43:34,773 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:43:34,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 240 events. 19/240 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 214. Up to 2 conditions per place. [2022-12-13 16:43:34,774 INFO L119 LiptonReduction]: Number of co-enabled transitions 1266 [2022-12-13 16:43:41,636 INFO L134 LiptonReduction]: Checked pairs total: 2448 [2022-12-13 16:43:41,636 INFO L136 LiptonReduction]: Total number of compositions: 251 [2022-12-13 16:43:41,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:43:41,652 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;@2623d449, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:43:41,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 16:43:41,658 INFO L130 PetriNetUnfolder]: 6/29 cut-off events. [2022-12-13 16:43:41,658 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:43:41,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:41,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:41,659 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 16:43:41,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1876957214, now seen corresponding path program 1 times [2022-12-13 16:43:41,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:41,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084496528] [2022-12-13 16:43:41,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:41,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:42,026 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 16:43:42,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:42,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084496528] [2022-12-13 16:43:42,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084496528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:42,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:42,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:43:42,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699294573] [2022-12-13 16:43:42,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:42,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:43:42,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:42,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:43:42,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:43:42,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 505 [2022-12-13 16:43:42,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 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 16:43:42,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:42,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 505 [2022-12-13 16:43:42,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:42,219 INFO L130 PetriNetUnfolder]: 451/666 cut-off events. [2022-12-13 16:43:42,220 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-12-13 16:43:42,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1414 conditions, 666 events. 451/666 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2337 event pairs, 73 based on Foata normal form. 1/500 useless extension candidates. Maximal degree in co-relation 1134. Up to 548 conditions per place. [2022-12-13 16:43:42,223 INFO L137 encePairwiseOnDemand]: 500/505 looper letters, 42 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2022-12-13 16:43:42,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 221 flow [2022-12-13 16:43:42,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:43:42,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:43:42,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 720 transitions. [2022-12-13 16:43:42,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4752475247524752 [2022-12-13 16:43:42,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 720 transitions. [2022-12-13 16:43:42,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 720 transitions. [2022-12-13 16:43:42,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:42,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 720 transitions. [2022-12-13 16:43:42,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 16:43:42,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 16:43:42,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 16:43:42,251 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 78 flow. Second operand 3 states and 720 transitions. [2022-12-13 16:43:42,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 221 flow [2022-12-13 16:43:42,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 47 transitions, 199 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 16:43:42,255 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 92 flow [2022-12-13 16:43:42,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2022-12-13 16:43:42,259 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2022-12-13 16:43:42,259 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 92 flow [2022-12-13 16:43:42,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 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 16:43:42,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:42,260 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:42,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:43:42,260 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 16:43:42,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:42,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1084436566, now seen corresponding path program 1 times [2022-12-13 16:43:42,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:42,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599265994] [2022-12-13 16:43:42,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:42,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:43:42,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:42,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599265994] [2022-12-13 16:43:42,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599265994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:42,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:42,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:43:42,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220209901] [2022-12-13 16:43:42,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:42,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:43:42,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:42,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:43:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:43:42,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 505 [2022-12-13 16:43:42,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 217.25) internal successors, (869), 4 states have internal predecessors, (869), 0 states have call successors, (0), 0 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 16:43:42,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:42,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 505 [2022-12-13 16:43:42,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:42,674 INFO L130 PetriNetUnfolder]: 576/912 cut-off events. [2022-12-13 16:43:42,674 INFO L131 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2022-12-13 16:43:42,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 912 events. 576/912 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3475 event pairs, 420 based on Foata normal form. 72/924 useless extension candidates. Maximal degree in co-relation 589. Up to 667 conditions per place. [2022-12-13 16:43:42,679 INFO L137 encePairwiseOnDemand]: 496/505 looper letters, 32 selfloop transitions, 2 changer transitions 39/73 dead transitions. [2022-12-13 16:43:42,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 73 transitions, 336 flow [2022-12-13 16:43:42,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:43:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:43:42,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1136 transitions. [2022-12-13 16:43:42,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4499009900990099 [2022-12-13 16:43:42,683 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1136 transitions. [2022-12-13 16:43:42,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1136 transitions. [2022-12-13 16:43:42,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:42,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1136 transitions. [2022-12-13 16:43:42,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 0 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 16:43:42,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 505.0) internal successors, (3030), 6 states have internal predecessors, (3030), 0 states have call successors, (0), 0 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 16:43:42,689 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 505.0) internal successors, (3030), 6 states have internal predecessors, (3030), 0 states have call successors, (0), 0 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 16:43:42,689 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 92 flow. Second operand 5 states and 1136 transitions. [2022-12-13 16:43:42,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 73 transitions, 336 flow [2022-12-13 16:43:42,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 73 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:43:42,691 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 122 flow [2022-12-13 16:43:42,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2022-12-13 16:43:42,692 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2022-12-13 16:43:42,692 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 122 flow [2022-12-13 16:43:42,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.25) internal successors, (869), 4 states have internal predecessors, (869), 0 states have call successors, (0), 0 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 16:43:42,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:42,692 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:42,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:43:42,693 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 16:43:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1896650471, now seen corresponding path program 1 times [2022-12-13 16:43:42,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:42,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510464934] [2022-12-13 16:43:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:42,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:42,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:43:42,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:42,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510464934] [2022-12-13 16:43:42,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510464934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:42,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:42,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:43:42,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871649883] [2022-12-13 16:43:42,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:42,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:43:42,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:42,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:43:42,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:43:42,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 505 [2022-12-13 16:43:42,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 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 16:43:42,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:42,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 505 [2022-12-13 16:43:42,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:42,990 INFO L130 PetriNetUnfolder]: 533/811 cut-off events. [2022-12-13 16:43:42,990 INFO L131 PetriNetUnfolder]: For 560/560 co-relation queries the response was YES. [2022-12-13 16:43:42,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2186 conditions, 811 events. 533/811 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2934 event pairs, 183 based on Foata normal form. 48/858 useless extension candidates. Maximal degree in co-relation 2171. Up to 512 conditions per place. [2022-12-13 16:43:42,993 INFO L137 encePairwiseOnDemand]: 502/505 looper letters, 49 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2022-12-13 16:43:42,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 51 transitions, 275 flow [2022-12-13 16:43:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:43:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:43:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2022-12-13 16:43:42,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47194719471947194 [2022-12-13 16:43:42,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2022-12-13 16:43:42,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2022-12-13 16:43:42,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:42,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2022-12-13 16:43:42,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 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 16:43:42,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 16:43:42,999 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 16:43:42,999 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 122 flow. Second operand 3 states and 715 transitions. [2022-12-13 16:43:42,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 51 transitions, 275 flow [2022-12-13 16:43:43,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 51 transitions, 265 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 16:43:43,001 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 120 flow [2022-12-13 16:43:43,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2022-12-13 16:43:43,002 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2022-12-13 16:43:43,002 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 120 flow [2022-12-13 16:43:43,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 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 16:43:43,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:43,002 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:43,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:43:43,003 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 16:43:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash -789880242, now seen corresponding path program 1 times [2022-12-13 16:43:43,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:43,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435744881] [2022-12-13 16:43:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:43,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:43:43,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:43,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435744881] [2022-12-13 16:43:43,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435744881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:43,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:43,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:43:43,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841650604] [2022-12-13 16:43:43,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:43,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:43:43,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:43,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:43:43,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:43:43,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 505 [2022-12-13 16:43:43,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 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 16:43:43,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:43,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 505 [2022-12-13 16:43:43,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:43,273 INFO L130 PetriNetUnfolder]: 549/835 cut-off events. [2022-12-13 16:43:43,273 INFO L131 PetriNetUnfolder]: For 678/678 co-relation queries the response was YES. [2022-12-13 16:43:43,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2338 conditions, 835 events. 549/835 cut-off events. For 678/678 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2923 event pairs, 167 based on Foata normal form. 30/862 useless extension candidates. Maximal degree in co-relation 2317. Up to 520 conditions per place. [2022-12-13 16:43:43,276 INFO L137 encePairwiseOnDemand]: 502/505 looper letters, 43 selfloop transitions, 2 changer transitions 6/51 dead transitions. [2022-12-13 16:43:43,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 51 transitions, 271 flow [2022-12-13 16:43:43,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:43:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:43:43,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 717 transitions. [2022-12-13 16:43:43,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47326732673267324 [2022-12-13 16:43:43,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 717 transitions. [2022-12-13 16:43:43,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 717 transitions. [2022-12-13 16:43:43,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:43,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 717 transitions. [2022-12-13 16:43:43,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 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 16:43:43,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 16:43:43,282 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 16:43:43,282 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 120 flow. Second operand 3 states and 717 transitions. [2022-12-13 16:43:43,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 51 transitions, 271 flow [2022-12-13 16:43:43,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 257 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 16:43:43,284 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 118 flow [2022-12-13 16:43:43,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2022-12-13 16:43:43,285 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2022-12-13 16:43:43,285 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 118 flow [2022-12-13 16:43:43,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 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 16:43:43,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:43,285 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:43,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:43:43,286 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 16:43:43,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:43,286 INFO L85 PathProgramCache]: Analyzing trace with hash 631268463, now seen corresponding path program 1 times [2022-12-13 16:43:43,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:43,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324023956] [2022-12-13 16:43:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:43,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:43:43,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:43,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324023956] [2022-12-13 16:43:43,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324023956] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:43,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:43,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:43:43,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877108203] [2022-12-13 16:43:43,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:43,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:43:43,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:43,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:43:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:43:43,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 505 [2022-12-13 16:43:43,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 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 16:43:43,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:43,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 505 [2022-12-13 16:43:43,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:43,633 INFO L130 PetriNetUnfolder]: 733/1147 cut-off events. [2022-12-13 16:43:43,633 INFO L131 PetriNetUnfolder]: For 645/645 co-relation queries the response was YES. [2022-12-13 16:43:43,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3037 conditions, 1147 events. 733/1147 cut-off events. For 645/645 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4498 event pairs, 587 based on Foata normal form. 26/1168 useless extension candidates. Maximal degree in co-relation 3015. Up to 833 conditions per place. [2022-12-13 16:43:43,636 INFO L137 encePairwiseOnDemand]: 500/505 looper letters, 32 selfloop transitions, 3 changer transitions 23/58 dead transitions. [2022-12-13 16:43:43,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 58 transitions, 302 flow [2022-12-13 16:43:43,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:43:43,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:43:43,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 903 transitions. [2022-12-13 16:43:43,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44702970297029704 [2022-12-13 16:43:43,639 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 903 transitions. [2022-12-13 16:43:43,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 903 transitions. [2022-12-13 16:43:43,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:43,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 903 transitions. [2022-12-13 16:43:43,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 225.75) internal successors, (903), 4 states have internal predecessors, (903), 0 states have call successors, (0), 0 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 16:43:43,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 505.0) internal successors, (2525), 5 states have internal predecessors, (2525), 0 states have call successors, (0), 0 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 16:43:43,644 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 505.0) internal successors, (2525), 5 states have internal predecessors, (2525), 0 states have call successors, (0), 0 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 16:43:43,644 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 118 flow. Second operand 4 states and 903 transitions. [2022-12-13 16:43:43,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 58 transitions, 302 flow [2022-12-13 16:43:43,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:43:43,646 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 134 flow [2022-12-13 16:43:43,646 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2022-12-13 16:43:43,646 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2022-12-13 16:43:43,647 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 134 flow [2022-12-13 16:43:43,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 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 16:43:43,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:43,647 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:43,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:43:43,648 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 16:43:43,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:43,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1691159228, now seen corresponding path program 1 times [2022-12-13 16:43:43,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:43,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020574323] [2022-12-13 16:43:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:43,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:43:43,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:43,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020574323] [2022-12-13 16:43:43,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020574323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:43,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:43,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:43:43,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233700140] [2022-12-13 16:43:43,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:43,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:43:43,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:43:43,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:43:43,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 505 [2022-12-13 16:43:43,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 218.25) internal successors, (873), 4 states have internal predecessors, (873), 0 states have call successors, (0), 0 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 16:43:43,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:43,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 505 [2022-12-13 16:43:43,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:43,956 INFO L130 PetriNetUnfolder]: 634/996 cut-off events. [2022-12-13 16:43:43,956 INFO L131 PetriNetUnfolder]: For 614/614 co-relation queries the response was YES. [2022-12-13 16:43:43,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2658 conditions, 996 events. 634/996 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3779 event pairs, 505 based on Foata normal form. 18/1011 useless extension candidates. Maximal degree in co-relation 2631. Up to 831 conditions per place. [2022-12-13 16:43:43,959 INFO L137 encePairwiseOnDemand]: 500/505 looper letters, 33 selfloop transitions, 3 changer transitions 17/53 dead transitions. [2022-12-13 16:43:43,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 288 flow [2022-12-13 16:43:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:43:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:43:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1109 transitions. [2022-12-13 16:43:43,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4392079207920792 [2022-12-13 16:43:43,962 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1109 transitions. [2022-12-13 16:43:43,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1109 transitions. [2022-12-13 16:43:43,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:43,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1109 transitions. [2022-12-13 16:43:43,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 0 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 16:43:43,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 505.0) internal successors, (3030), 6 states have internal predecessors, (3030), 0 states have call successors, (0), 0 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 16:43:43,967 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 505.0) internal successors, (3030), 6 states have internal predecessors, (3030), 0 states have call successors, (0), 0 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 16:43:43,967 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 134 flow. Second operand 5 states and 1109 transitions. [2022-12-13 16:43:43,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 288 flow [2022-12-13 16:43:43,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 278 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 16:43:43,969 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 140 flow [2022-12-13 16:43:43,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2022-12-13 16:43:43,969 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2022-12-13 16:43:43,969 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 140 flow [2022-12-13 16:43:43,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.25) internal successors, (873), 4 states have internal predecessors, (873), 0 states have call successors, (0), 0 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 16:43:43,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:43,970 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:43,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:43:43,970 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 16:43:43,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:43,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2080909720, now seen corresponding path program 1 times [2022-12-13 16:43:43,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:43,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643805965] [2022-12-13 16:43:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:43,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:43:44,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:44,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643805965] [2022-12-13 16:43:44,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643805965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:44,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:44,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:43:44,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642250836] [2022-12-13 16:43:44,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:44,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:43:44,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:44,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:43:44,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:43:44,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 505 [2022-12-13 16:43:44,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 16:43:44,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:44,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 505 [2022-12-13 16:43:44,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:44,200 INFO L130 PetriNetUnfolder]: 353/547 cut-off events. [2022-12-13 16:43:44,200 INFO L131 PetriNetUnfolder]: For 351/351 co-relation queries the response was YES. [2022-12-13 16:43:44,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 547 events. 353/547 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1612 event pairs, 139 based on Foata normal form. 14/560 useless extension candidates. Maximal degree in co-relation 1443. Up to 460 conditions per place. [2022-12-13 16:43:44,204 INFO L137 encePairwiseOnDemand]: 502/505 looper letters, 37 selfloop transitions, 2 changer transitions 7/46 dead transitions. [2022-12-13 16:43:44,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 257 flow [2022-12-13 16:43:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:43:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:43:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2022-12-13 16:43:44,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2022-12-13 16:43:44,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2022-12-13 16:43:44,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2022-12-13 16:43:44,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:44,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2022-12-13 16:43:44,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 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 16:43:44,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 16:43:44,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 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 16:43:44,209 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 140 flow. Second operand 3 states and 707 transitions. [2022-12-13 16:43:44,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 257 flow [2022-12-13 16:43:44,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 249 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 16:43:44,211 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 146 flow [2022-12-13 16:43:44,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2022-12-13 16:43:44,211 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2022-12-13 16:43:44,211 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 146 flow [2022-12-13 16:43:44,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 16:43:44,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:44,212 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:44,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:43:44,212 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 16:43:44,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:44,212 INFO L85 PathProgramCache]: Analyzing trace with hash 112415850, now seen corresponding path program 1 times [2022-12-13 16:43:44,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:44,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465398100] [2022-12-13 16:43:44,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:44,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:43:44,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:44,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465398100] [2022-12-13 16:43:44,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465398100] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:44,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:44,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:43:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533297945] [2022-12-13 16:43:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:44,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:43:44,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:44,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:43:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:43:44,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 505 [2022-12-13 16:43:44,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 227.6) internal successors, (1138), 5 states have internal predecessors, (1138), 0 states have call successors, (0), 0 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 16:43:44,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:44,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 505 [2022-12-13 16:43:44,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:44,644 INFO L130 PetriNetUnfolder]: 881/1331 cut-off events. [2022-12-13 16:43:44,644 INFO L131 PetriNetUnfolder]: For 961/961 co-relation queries the response was YES. [2022-12-13 16:43:44,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3768 conditions, 1331 events. 881/1331 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4916 event pairs, 346 based on Foata normal form. 42/1372 useless extension candidates. Maximal degree in co-relation 3741. Up to 492 conditions per place. [2022-12-13 16:43:44,652 INFO L137 encePairwiseOnDemand]: 500/505 looper letters, 64 selfloop transitions, 9 changer transitions 0/73 dead transitions. [2022-12-13 16:43:44,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 73 transitions, 418 flow [2022-12-13 16:43:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:43:44,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:43:44,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 954 transitions. [2022-12-13 16:43:44,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47227722772277225 [2022-12-13 16:43:44,654 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 954 transitions. [2022-12-13 16:43:44,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 954 transitions. [2022-12-13 16:43:44,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:44,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 954 transitions. [2022-12-13 16:43:44,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 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 16:43:44,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 505.0) internal successors, (2525), 5 states have internal predecessors, (2525), 0 states have call successors, (0), 0 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 16:43:44,658 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 505.0) internal successors, (2525), 5 states have internal predecessors, (2525), 0 states have call successors, (0), 0 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 16:43:44,658 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 146 flow. Second operand 4 states and 954 transitions. [2022-12-13 16:43:44,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 73 transitions, 418 flow [2022-12-13 16:43:44,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 73 transitions, 414 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 16:43:44,660 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 215 flow [2022-12-13 16:43:44,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2022-12-13 16:43:44,661 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2022-12-13 16:43:44,661 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 215 flow [2022-12-13 16:43:44,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 227.6) internal successors, (1138), 5 states have internal predecessors, (1138), 0 states have call successors, (0), 0 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 16:43:44,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:44,662 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:44,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:43:44,662 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 16:43:44,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:44,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1655239287, now seen corresponding path program 1 times [2022-12-13 16:43:44,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:44,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364527674] [2022-12-13 16:43:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:44,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:43:44,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:44,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364527674] [2022-12-13 16:43:44,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364527674] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:43:44,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222889264] [2022-12-13 16:43:44,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:44,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:44,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:43:44,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:43:44,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:43:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:44,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 16:43:44,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:43:45,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:43:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:43:45,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222889264] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:43:45,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:43:45,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 16:43:45,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032617182] [2022-12-13 16:43:45,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:43:45,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 16:43:45,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:45,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 16:43:45,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:43:45,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 505 [2022-12-13 16:43:45,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 215 flow. Second operand has 12 states, 12 states have (on average 207.83333333333334) internal successors, (2494), 12 states have internal predecessors, (2494), 0 states have call successors, (0), 0 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 16:43:45,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:45,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 505 [2022-12-13 16:43:45,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:45,606 INFO L130 PetriNetUnfolder]: 949/1470 cut-off events. [2022-12-13 16:43:45,606 INFO L131 PetriNetUnfolder]: For 1924/1924 co-relation queries the response was YES. [2022-12-13 16:43:45,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4700 conditions, 1470 events. 949/1470 cut-off events. For 1924/1924 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5592 event pairs, 669 based on Foata normal form. 2/1470 useless extension candidates. Maximal degree in co-relation 4307. Up to 1331 conditions per place. [2022-12-13 16:43:45,612 INFO L137 encePairwiseOnDemand]: 500/505 looper letters, 41 selfloop transitions, 3 changer transitions 32/76 dead transitions. [2022-12-13 16:43:45,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 479 flow [2022-12-13 16:43:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:43:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:43:45,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1287 transitions. [2022-12-13 16:43:45,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42475247524752474 [2022-12-13 16:43:45,615 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1287 transitions. [2022-12-13 16:43:45,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1287 transitions. [2022-12-13 16:43:45,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:45,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1287 transitions. [2022-12-13 16:43:45,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.5) internal successors, (1287), 6 states have internal predecessors, (1287), 0 states have call successors, (0), 0 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 16:43:45,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 505.0) internal successors, (3535), 7 states have internal predecessors, (3535), 0 states have call successors, (0), 0 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 16:43:45,620 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 505.0) internal successors, (3535), 7 states have internal predecessors, (3535), 0 states have call successors, (0), 0 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 16:43:45,621 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 215 flow. Second operand 6 states and 1287 transitions. [2022-12-13 16:43:45,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 479 flow [2022-12-13 16:43:45,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 76 transitions, 457 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-12-13 16:43:45,624 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 217 flow [2022-12-13 16:43:45,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2022-12-13 16:43:45,624 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 22 predicate places. [2022-12-13 16:43:45,624 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 217 flow [2022-12-13 16:43:45,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 207.83333333333334) internal successors, (2494), 12 states have internal predecessors, (2494), 0 states have call successors, (0), 0 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 16:43:45,625 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:45,625 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:45,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:43:45,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:45,826 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 16:43:45,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:45,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1494413317, now seen corresponding path program 2 times [2022-12-13 16:43:45,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:45,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117256228] [2022-12-13 16:43:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:45,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 16:43:46,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:46,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117256228] [2022-12-13 16:43:46,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117256228] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:43:46,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796624622] [2022-12-13 16:43:46,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:43:46,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:46,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:43:46,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:43:46,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:43:46,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:43:46,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:43:46,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 16:43:46,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 16:43:46,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:43:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 16:43:46,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796624622] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:43:46,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:43:46,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 16:43:46,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060772805] [2022-12-13 16:43:46,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:43:46,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 16:43:46,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:46,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 16:43:46,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:43:46,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 505 [2022-12-13 16:43:46,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 217 flow. Second operand has 12 states, 12 states have (on average 208.16666666666666) internal successors, (2498), 12 states have internal predecessors, (2498), 0 states have call successors, (0), 0 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 16:43:46,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:46,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 505 [2022-12-13 16:43:46,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:46,989 INFO L130 PetriNetUnfolder]: 1118/1782 cut-off events. [2022-12-13 16:43:46,989 INFO L131 PetriNetUnfolder]: For 2155/2155 co-relation queries the response was YES. [2022-12-13 16:43:46,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5464 conditions, 1782 events. 1118/1782 cut-off events. For 2155/2155 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7534 event pairs, 731 based on Foata normal form. 132/1912 useless extension candidates. Maximal degree in co-relation 5430. Up to 1328 conditions per place. [2022-12-13 16:43:47,000 INFO L137 encePairwiseOnDemand]: 498/505 looper letters, 39 selfloop transitions, 6 changer transitions 44/89 dead transitions. [2022-12-13 16:43:47,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 89 transitions, 587 flow [2022-12-13 16:43:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:43:47,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 16:43:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1908 transitions. [2022-12-13 16:43:47,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4198019801980198 [2022-12-13 16:43:47,017 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1908 transitions. [2022-12-13 16:43:47,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1908 transitions. [2022-12-13 16:43:47,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:47,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1908 transitions. [2022-12-13 16:43:47,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 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 16:43:47,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 505.0) internal successors, (5050), 10 states have internal predecessors, (5050), 0 states have call successors, (0), 0 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 16:43:47,029 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 505.0) internal successors, (5050), 10 states have internal predecessors, (5050), 0 states have call successors, (0), 0 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 16:43:47,029 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 217 flow. Second operand 9 states and 1908 transitions. [2022-12-13 16:43:47,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 89 transitions, 587 flow [2022-12-13 16:43:47,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 89 transitions, 569 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-12-13 16:43:47,033 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 233 flow [2022-12-13 16:43:47,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=233, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2022-12-13 16:43:47,034 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 27 predicate places. [2022-12-13 16:43:47,034 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 233 flow [2022-12-13 16:43:47,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 208.16666666666666) internal successors, (2498), 12 states have internal predecessors, (2498), 0 states have call successors, (0), 0 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 16:43:47,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:47,036 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:47,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:43:47,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:47,237 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 16:43:47,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:47,237 INFO L85 PathProgramCache]: Analyzing trace with hash 145503612, now seen corresponding path program 3 times [2022-12-13 16:43:47,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:47,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309047776] [2022-12-13 16:43:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:47,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:43:50,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:50,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309047776] [2022-12-13 16:43:50,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309047776] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:43:50,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761342258] [2022-12-13 16:43:50,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:43:50,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:50,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:43:50,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:43:50,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:43:50,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 16:43:50,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:43:50,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-13 16:43:50,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:51,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:43:51,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:43:53,045 INFO L321 Elim1Store]: treesize reduction 48, result has 71.4 percent of original size [2022-12-13 16:43:53,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 131 [2022-12-13 16:43:53,117 INFO L321 Elim1Store]: treesize reduction 39, result has 60.2 percent of original size [2022-12-13 16:43:53,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 67 [2022-12-13 16:43:53,192 INFO L321 Elim1Store]: treesize reduction 48, result has 70.4 percent of original size [2022-12-13 16:43:53,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 125 [2022-12-13 16:43:53,241 INFO L321 Elim1Store]: treesize reduction 163, result has 0.6 percent of original size [2022-12-13 16:43:53,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 1 [2022-12-13 16:43:53,301 INFO L321 Elim1Store]: treesize reduction 48, result has 71.4 percent of original size [2022-12-13 16:43:53,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 131 [2022-12-13 16:43:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:43:53,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761342258] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:43:53,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:43:53,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2022-12-13 16:43:53,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816417438] [2022-12-13 16:43:53,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:43:53,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 16:43:53,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:53,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 16:43:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1972, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 16:43:58,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 505 [2022-12-13 16:43:58,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 233 flow. Second operand has 48 states, 48 states have (on average 170.89583333333334) internal successors, (8203), 48 states have internal predecessors, (8203), 0 states have call successors, (0), 0 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 16:43:58,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:58,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 505 [2022-12-13 16:43:58,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:44:06,795 INFO L130 PetriNetUnfolder]: 1773/2876 cut-off events. [2022-12-13 16:44:06,795 INFO L131 PetriNetUnfolder]: For 3475/3475 co-relation queries the response was YES. [2022-12-13 16:44:06,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8704 conditions, 2876 events. 1773/2876 cut-off events. For 3475/3475 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 13558 event pairs, 618 based on Foata normal form. 31/2899 useless extension candidates. Maximal degree in co-relation 7756. Up to 1374 conditions per place. [2022-12-13 16:44:06,805 INFO L137 encePairwiseOnDemand]: 488/505 looper letters, 173 selfloop transitions, 103 changer transitions 106/382 dead transitions. [2022-12-13 16:44:06,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 382 transitions, 2180 flow [2022-12-13 16:44:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-13 16:44:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-12-13 16:44:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 10177 transitions. [2022-12-13 16:44:06,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3474564697849095 [2022-12-13 16:44:06,820 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 10177 transitions. [2022-12-13 16:44:06,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 10177 transitions. [2022-12-13 16:44:06,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:44:06,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 10177 transitions. [2022-12-13 16:44:06,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 175.4655172413793) internal successors, (10177), 58 states have internal predecessors, (10177), 0 states have call successors, (0), 0 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 16:44:06,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 505.0) internal successors, (29795), 59 states have internal predecessors, (29795), 0 states have call successors, (0), 0 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 16:44:06,861 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 505.0) internal successors, (29795), 59 states have internal predecessors, (29795), 0 states have call successors, (0), 0 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 16:44:06,862 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 233 flow. Second operand 58 states and 10177 transitions. [2022-12-13 16:44:06,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 382 transitions, 2180 flow [2022-12-13 16:44:06,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 382 transitions, 2127 flow, removed 21 selfloop flow, removed 6 redundant places. [2022-12-13 16:44:06,868 INFO L231 Difference]: Finished difference. Result has 123 places, 141 transitions, 1126 flow [2022-12-13 16:44:06,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1126, PETRI_PLACES=123, PETRI_TRANSITIONS=141} [2022-12-13 16:44:06,869 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 89 predicate places. [2022-12-13 16:44:06,869 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 141 transitions, 1126 flow [2022-12-13 16:44:06,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 170.89583333333334) internal successors, (8203), 48 states have internal predecessors, (8203), 0 states have call successors, (0), 0 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 16:44:06,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:44:06,871 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:44:06,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:44:07,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:44:07,072 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 16:44:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:44:07,073 INFO L85 PathProgramCache]: Analyzing trace with hash 480860367, now seen corresponding path program 4 times [2022-12-13 16:44:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:44:07,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332504642] [2022-12-13 16:44:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:44:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:44:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:44:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:44:07,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:44:07,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332504642] [2022-12-13 16:44:07,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332504642] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:44:07,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393629868] [2022-12-13 16:44:07,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 16:44:07,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:44:07,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:44:07,290 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:44:07,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:44:07,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 16:44:07,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:44:07,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 16:44:07,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:44:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:44:07,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:44:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:44:07,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393629868] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:44:07,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:44:07,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 16:44:07,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911999310] [2022-12-13 16:44:07,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:44:07,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 16:44:07,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:44:07,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 16:44:07,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-12-13 16:44:07,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 505 [2022-12-13 16:44:07,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 141 transitions, 1126 flow. Second operand has 18 states, 18 states have (on average 207.27777777777777) internal successors, (3731), 18 states have internal predecessors, (3731), 0 states have call successors, (0), 0 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 16:44:07,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:44:07,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 505 [2022-12-13 16:44:07,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:44:08,450 INFO L130 PetriNetUnfolder]: 2106/3515 cut-off events. [2022-12-13 16:44:08,450 INFO L131 PetriNetUnfolder]: For 5834/5834 co-relation queries the response was YES. [2022-12-13 16:44:08,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11576 conditions, 3515 events. 2106/3515 cut-off events. For 5834/5834 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 17909 event pairs, 1378 based on Foata normal form. 88/3595 useless extension candidates. Maximal degree in co-relation 11229. Up to 2441 conditions per place. [2022-12-13 16:44:08,461 INFO L137 encePairwiseOnDemand]: 500/505 looper letters, 143 selfloop transitions, 7 changer transitions 56/206 dead transitions. [2022-12-13 16:44:08,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 206 transitions, 1912 flow [2022-12-13 16:44:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:44:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:44:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1712 transitions. [2022-12-13 16:44:08,465 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42376237623762375 [2022-12-13 16:44:08,465 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1712 transitions. [2022-12-13 16:44:08,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1712 transitions. [2022-12-13 16:44:08,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:44:08,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1712 transitions. [2022-12-13 16:44:08,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 214.0) internal successors, (1712), 8 states have internal predecessors, (1712), 0 states have call successors, (0), 0 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 16:44:08,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 505.0) internal successors, (4545), 9 states have internal predecessors, (4545), 0 states have call successors, (0), 0 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 16:44:08,474 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 505.0) internal successors, (4545), 9 states have internal predecessors, (4545), 0 states have call successors, (0), 0 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 16:44:08,474 INFO L175 Difference]: Start difference. First operand has 123 places, 141 transitions, 1126 flow. Second operand 8 states and 1712 transitions. [2022-12-13 16:44:08,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 206 transitions, 1912 flow [2022-12-13 16:44:08,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 206 transitions, 1627 flow, removed 120 selfloop flow, removed 9 redundant places. [2022-12-13 16:44:08,497 INFO L231 Difference]: Finished difference. Result has 123 places, 120 transitions, 804 flow [2022-12-13 16:44:08,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=804, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2022-12-13 16:44:08,498 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 89 predicate places. [2022-12-13 16:44:08,498 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 804 flow [2022-12-13 16:44:08,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 207.27777777777777) internal successors, (3731), 18 states have internal predecessors, (3731), 0 states have call successors, (0), 0 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 16:44:08,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:44:08,499 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:44:08,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 16:44:08,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 16:44:08,701 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 16:44:08,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:44:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash -692573627, now seen corresponding path program 5 times [2022-12-13 16:44:08,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:44:08,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331343029] [2022-12-13 16:44:08,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:44:08,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:44:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:44:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:44:08,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:44:08,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331343029] [2022-12-13 16:44:08,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331343029] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:44:08,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692178793] [2022-12-13 16:44:08,985 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 16:44:08,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:44:08,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:44:08,986 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:44:08,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:44:09,243 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-13 16:44:09,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:44:09,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 16:44:09,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:44:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:44:09,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:44:09,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692178793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:44:09,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:44:09,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2022-12-13 16:44:09,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985863901] [2022-12-13 16:44:09,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:44:09,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:44:09,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:44:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:44:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:44:09,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 505 [2022-12-13 16:44:09,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 804 flow. Second operand has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 16:44:09,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:44:09,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 505 [2022-12-13 16:44:09,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:44:09,864 INFO L130 PetriNetUnfolder]: 2911/4630 cut-off events. [2022-12-13 16:44:09,864 INFO L131 PetriNetUnfolder]: For 8641/8641 co-relation queries the response was YES. [2022-12-13 16:44:09,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15642 conditions, 4630 events. 2911/4630 cut-off events. For 8641/8641 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 20867 event pairs, 1266 based on Foata normal form. 190/4815 useless extension candidates. Maximal degree in co-relation 15552. Up to 2414 conditions per place. [2022-12-13 16:44:09,895 INFO L137 encePairwiseOnDemand]: 502/505 looper letters, 138 selfloop transitions, 10 changer transitions 0/148 dead transitions. [2022-12-13 16:44:09,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 148 transitions, 1242 flow [2022-12-13 16:44:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:44:09,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:44:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 954 transitions. [2022-12-13 16:44:09,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47227722772277225 [2022-12-13 16:44:09,897 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 954 transitions. [2022-12-13 16:44:09,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 954 transitions. [2022-12-13 16:44:09,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:44:09,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 954 transitions. [2022-12-13 16:44:09,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 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 16:44:09,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 505.0) internal successors, (2525), 5 states have internal predecessors, (2525), 0 states have call successors, (0), 0 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 16:44:09,901 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 505.0) internal successors, (2525), 5 states have internal predecessors, (2525), 0 states have call successors, (0), 0 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 16:44:09,901 INFO L175 Difference]: Start difference. First operand has 123 places, 120 transitions, 804 flow. Second operand 4 states and 954 transitions. [2022-12-13 16:44:09,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 148 transitions, 1242 flow [2022-12-13 16:44:09,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 148 transitions, 1200 flow, removed 15 selfloop flow, removed 8 redundant places. [2022-12-13 16:44:09,918 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 702 flow [2022-12-13 16:44:09,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=702, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2022-12-13 16:44:09,919 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 71 predicate places. [2022-12-13 16:44:09,919 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 702 flow [2022-12-13 16:44:09,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 16:44:09,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:44:09,919 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:44:09,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:44:10,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 16:44:10,121 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 16:44:10,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:44:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1653352797, now seen corresponding path program 6 times [2022-12-13 16:44:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:44:10,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47194810] [2022-12-13 16:44:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:44:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:44:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:44:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 16:44:10,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:44:10,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47194810] [2022-12-13 16:44:10,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47194810] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:44:10,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852132724] [2022-12-13 16:44:10,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 16:44:10,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:44:10,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:44:10,348 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:44:10,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:44:10,572 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 16:44:10,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:44:10,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 16:44:10,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:44:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:44:10,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:44:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 16:44:10,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852132724] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:44:10,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:44:10,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2022-12-13 16:44:10,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641561695] [2022-12-13 16:44:10,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:44:10,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:44:10,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:44:10,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:44:10,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:44:10,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 505 [2022-12-13 16:44:10,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 702 flow. Second operand has 8 states, 8 states have (on average 227.625) internal successors, (1821), 8 states have internal predecessors, (1821), 0 states have call successors, (0), 0 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 16:44:10,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:44:10,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 505 [2022-12-13 16:44:10,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:44:10,890 INFO L130 PetriNetUnfolder]: 789/1552 cut-off events. [2022-12-13 16:44:10,890 INFO L131 PetriNetUnfolder]: For 1778/1778 co-relation queries the response was YES. [2022-12-13 16:44:10,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4382 conditions, 1552 events. 789/1552 cut-off events. For 1778/1778 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7819 event pairs, 666 based on Foata normal form. 64/1611 useless extension candidates. Maximal degree in co-relation 4354. Up to 1448 conditions per place. [2022-12-13 16:44:10,894 INFO L137 encePairwiseOnDemand]: 502/505 looper letters, 87 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2022-12-13 16:44:10,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 96 transitions, 800 flow [2022-12-13 16:44:10,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:44:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:44:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 918 transitions. [2022-12-13 16:44:10,895 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45445544554455447 [2022-12-13 16:44:10,895 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 918 transitions. [2022-12-13 16:44:10,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 918 transitions. [2022-12-13 16:44:10,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:44:10,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 918 transitions. [2022-12-13 16:44:10,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 16:44:10,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 505.0) internal successors, (2525), 5 states have internal predecessors, (2525), 0 states have call successors, (0), 0 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 16:44:10,897 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 505.0) internal successors, (2525), 5 states have internal predecessors, (2525), 0 states have call successors, (0), 0 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 16:44:10,897 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 702 flow. Second operand 4 states and 918 transitions. [2022-12-13 16:44:10,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 96 transitions, 800 flow [2022-12-13 16:44:10,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 695 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-12-13 16:44:10,906 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 505 flow [2022-12-13 16:44:10,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2022-12-13 16:44:10,907 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 66 predicate places. [2022-12-13 16:44:10,907 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 505 flow [2022-12-13 16:44:10,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 227.625) internal successors, (1821), 8 states have internal predecessors, (1821), 0 states have call successors, (0), 0 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 16:44:10,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:44:10,908 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:44:10,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 16:44:11,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 16:44:11,109 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 16:44:11,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:44:11,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1151588582, now seen corresponding path program 7 times [2022-12-13 16:44:11,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:44:11,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027876220] [2022-12-13 16:44:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:44:11,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:44:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:44:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:44:14,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:44:14,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027876220] [2022-12-13 16:44:14,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027876220] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:44:14,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859896606] [2022-12-13 16:44:14,769 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 16:44:14,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:44:14,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:44:14,770 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:44:14,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:44:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:44:14,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 97 conjunts are in the unsatisfiable core [2022-12-13 16:44:14,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:44:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:44:16,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:44:28,683 WARN L233 SmtUtils]: Spent 12.06s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:45:13,079 WARN L233 SmtUtils]: Spent 44.21s on a formula simplification. DAG size of input: 63 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:45:51,337 WARN L233 SmtUtils]: Spent 38.12s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:47:32,047 WARN L233 SmtUtils]: Spent 1.64m on a formula simplification. DAG size of input: 81 DAG size of output: 78 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:47:32,158 INFO L321 Elim1Store]: treesize reduction 48, result has 71.4 percent of original size [2022-12-13 16:47:32,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 131 [2022-12-13 16:47:32,264 INFO L321 Elim1Store]: treesize reduction 48, result has 71.4 percent of original size [2022-12-13 16:47:32,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 131 [2022-12-13 16:47:32,375 INFO L321 Elim1Store]: treesize reduction 39, result has 75.9 percent of original size [2022-12-13 16:47:32,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 141 [2022-12-13 16:47:32,425 INFO L321 Elim1Store]: treesize reduction 163, result has 0.6 percent of original size [2022-12-13 16:47:32,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 1 [2022-12-13 16:47:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 16:47:35,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859896606] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:47:35,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:47:35,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 15] total 52 [2022-12-13 16:47:35,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849554478] [2022-12-13 16:47:35,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:47:35,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-13 16:47:35,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:47:35,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-13 16:47:35,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=2440, Unknown=2, NotChecked=0, Total=2862 [2022-12-13 16:47:37,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:47:39,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:47:42,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:47:44,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:47:46,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:47:49,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:47:51,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:47:53,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:47:55,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:47:57,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:47:59,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:48:03,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:48:05,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:48:07,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:48:11,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:48:13,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:48:15,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:48:15,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 505 [2022-12-13 16:48:15,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 505 flow. Second operand has 54 states, 54 states have (on average 160.85185185185185) internal successors, (8686), 54 states have internal predecessors, (8686), 0 states have call successors, (0), 0 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 16:48:15,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:48:15,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 505 [2022-12-13 16:48:15,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:49:17,066 WARN L233 SmtUtils]: Spent 1.02m on a formula simplification. DAG size of input: 148 DAG size of output: 114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:49:19,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:49:21,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:49:22,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:49:24,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:49:26,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:49:28,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:50:15,717 WARN L233 SmtUtils]: Spent 42.45s on a formula simplification. DAG size of input: 120 DAG size of output: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:50:19,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:50:21,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:50:33,948 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 115 DAG size of output: 78 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:52:11,403 WARN L233 SmtUtils]: Spent 1.57m on a formula simplification. DAG size of input: 79 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:52:13,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:15,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:17,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:19,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:21,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:23,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:25,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:27,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:29,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:31,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:33,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:35,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:38,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:40,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:42,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:52:44,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 16:53:37,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2022-12-13 16:53:37,503 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-12-13 16:53:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 16:53:37,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:53:37,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 16:53:37,707 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:391) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:230) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.NestedWordAutomataUtils.getSuccessorState(NestedWordAutomataUtils.java:483) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePetriNet$DifferenceSuccessorTransitionProvider.getOrConstructTransition(DifferencePetriNet.java:279) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePetriNet$DifferenceSuccessorTransitionProvider.getTransitions(DifferencePetriNet.java:261) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.addFullyInstantiatedCandidate(PossibleExtensions.java:168) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:195) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.update(PossibleExtensions.java:135) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolder.computeUnfoldingHelper(PetriNetUnfolder.java:209) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolder.computeUnfolding(PetriNetUnfolder.java:168) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolder.(PetriNetUnfolder.java:129) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.FinitePrefix.(FinitePrefix.java:76) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.FinitePrefix.(FinitePrefix.java:64) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePairwiseOnDemand.(DifferencePairwiseOnDemand.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.enhanceAnddeterminizeInterpolantAutomaton(CegarLoopForPetriNet.java:488) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.refineAbstraction(CegarLoopForPetriNet.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 62 more [2022-12-13 16:53:37,714 INFO L158 Benchmark]: Toolchain (without parser) took 604112.84ms. Allocated memory was 159.4MB in the beginning and 406.8MB in the end (delta: 247.5MB). Free memory was 109.3MB in the beginning and 73.4MB in the end (delta: 35.9MB). Peak memory consumption was 285.1MB. Max. memory is 16.1GB. [2022-12-13 16:53:37,715 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory was 75.0MB in the beginning and 74.9MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:53:37,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.93ms. Allocated memory is still 159.4MB. Free memory was 109.3MB in the beginning and 94.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 16:53:37,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.96ms. Allocated memory is still 159.4MB. Free memory was 94.6MB in the beginning and 92.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:53:37,717 INFO L158 Benchmark]: Boogie Preprocessor took 36.96ms. Allocated memory is still 159.4MB. Free memory was 92.1MB in the beginning and 90.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:53:37,718 INFO L158 Benchmark]: RCFGBuilder took 634.38ms. Allocated memory is still 159.4MB. Free memory was 89.5MB in the beginning and 104.5MB in the end (delta: -15.0MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2022-12-13 16:53:37,718 INFO L158 Benchmark]: TraceAbstraction took 603156.84ms. Allocated memory was 159.4MB in the beginning and 406.8MB in the end (delta: 247.5MB). Free memory was 103.9MB in the beginning and 73.4MB in the end (delta: 30.5MB). Peak memory consumption was 278.0MB. Max. memory is 16.1GB. [2022-12-13 16:53:37,722 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 104.9MB. Free memory was 75.0MB in the beginning and 74.9MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.93ms. Allocated memory is still 159.4MB. Free memory was 109.3MB in the beginning and 94.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.96ms. Allocated memory is still 159.4MB. Free memory was 94.6MB in the beginning and 92.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.96ms. Allocated memory is still 159.4MB. Free memory was 92.1MB in the beginning and 90.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 634.38ms. Allocated memory is still 159.4MB. Free memory was 89.5MB in the beginning and 104.5MB in the end (delta: -15.0MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * TraceAbstraction took 603156.84ms. Allocated memory was 159.4MB in the beginning and 406.8MB in the end (delta: 247.5MB). Free memory was 103.9MB in the beginning and 73.4MB in the end (delta: 30.5MB). Peak memory consumption was 278.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 231 PlacesBefore, 34 PlacesAfterwards, 240 TransitionsBefore, 30 TransitionsAfterwards, 1266 CoEnabledTransitionPairs, 7 FixpointIterations, 172 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 33 TrivialYvCompositions, 10 ConcurrentYvCompositions, 13 ChoiceCompositions, 251 TotalNumberOfCompositions, 2448 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1555, independent: 1473, independent conditional: 0, independent unconditional: 1473, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 731, independent: 713, independent conditional: 0, independent unconditional: 713, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1555, independent: 760, independent conditional: 0, independent unconditional: 760, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 731, unknown conditional: 0, unknown unconditional: 731] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/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_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/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 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 --- 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 16:53:39,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:53:39,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:53:39,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:53:39,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:53:39,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:53:39,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:53:39,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:53:39,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:53:39,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:53:39,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:53:39,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:53:39,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:53:39,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:53:39,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:53:39,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:53:39,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:53:39,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:53:39,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:53:39,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:53:39,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:53:39,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:53:39,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:53:39,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:53:39,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:53:39,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:53:39,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:53:39,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:53:39,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:53:39,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:53:39,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:53:39,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:53:39,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:53:39,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:53:39,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:53:39,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:53:39,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:53:39,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:53:39,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:53:39,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:53:39,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:53:39,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 16:53:39,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:53:39,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:53:39,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:53:39,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:53:39,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:53:39,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:53:39,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:53:39,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:53:39,192 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:53:39,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:53:39,193 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:53:39,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:53:39,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:53:39,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:53:39,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:53:39,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:53:39,194 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 16:53:39,194 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 16:53:39,194 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 16:53:39,194 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:53:39,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:53:39,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:53:39,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:53:39,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:53:39,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:53:39,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:53:39,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:53:39,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:53:39,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:53:39,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:53:39,196 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 16:53:39,196 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 16:53:39,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:53:39,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:53:39,196 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:53:39,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:53:39,196 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 16:53:39,197 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:53:39,197 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_b487e28a-3a72-47b6-a46a-77c5f77a712d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 [2022-12-13 16:53:39,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:53:39,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:53:39,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:53:39,458 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:53:39,459 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:53:39,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-12-13 16:53:42,068 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:53:42,245 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:53:42,245 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-12-13 16:53:42,253 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/data/26db44348/7983b9f78be4488baf8212c45bf79a16/FLAGc8100f372 [2022-12-13 16:53:42,267 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/data/26db44348/7983b9f78be4488baf8212c45bf79a16 [2022-12-13 16:53:42,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:53:42,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:53:42,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:53:42,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:53:42,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:53:42,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:53:42" (1/1) ... [2022-12-13 16:53:42,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697ee545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42, skipping insertion in model container [2022-12-13 16:53:42,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:53:42" (1/1) ... [2022-12-13 16:53:42,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:53:42,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:53:42,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,432 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,432 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,433 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,434 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,435 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,436 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,437 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,442 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,443 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,444 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,445 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,447 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,457 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_b487e28a-3a72-47b6-a46a-77c5f77a712d/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-12-13 16:53:42,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:53:42,480 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 16:53:42,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:53:42,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,506 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_b487e28a-3a72-47b6-a46a-77c5f77a712d/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-12-13 16:53:42,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:53:42,513 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:53:42,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:53:42,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:53:42,533 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_b487e28a-3a72-47b6-a46a-77c5f77a712d/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-12-13 16:53:42,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:53:42,546 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:53:42,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42 WrapperNode [2022-12-13 16:53:42,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:53:42,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:53:42,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:53:42,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:53:42,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42" (1/1) ... [2022-12-13 16:53:42,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42" (1/1) ... [2022-12-13 16:53:42,586 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 322 [2022-12-13 16:53:42,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:53:42,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:53:42,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:53:42,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:53:42,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42" (1/1) ... [2022-12-13 16:53:42,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42" (1/1) ... [2022-12-13 16:53:42,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42" (1/1) ... [2022-12-13 16:53:42,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42" (1/1) ... [2022-12-13 16:53:42,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42" (1/1) ... [2022-12-13 16:53:42,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42" (1/1) ... [2022-12-13 16:53:42,629 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42" (1/1) ... [2022-12-13 16:53:42,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42" (1/1) ... [2022-12-13 16:53:42,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:53:42,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:53:42,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:53:42,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:53:42,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42" (1/1) ... [2022-12-13 16:53:42,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:53:42,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:53:42,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:53:42,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:53:42,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:53:42,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 16:53:42,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:53:42,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 16:53:42,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 16:53:42,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 16:53:42,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 16:53:42,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 16:53:42,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 16:53:42,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 16:53:42,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 16:53:42,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 16:53:42,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:53:42,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:53:42,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:53:42,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:53:42,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 16:53:42,695 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 16:53:42,799 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:53:42,800 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:53:43,265 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:53:43,440 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:53:43,440 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 16:53:43,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:53:43 BoogieIcfgContainer [2022-12-13 16:53:43,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:53:43,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:53:43,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:53:43,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:53:43,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:53:42" (1/3) ... [2022-12-13 16:53:43,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0225ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:53:43, skipping insertion in model container [2022-12-13 16:53:43,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:42" (2/3) ... [2022-12-13 16:53:43,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0225ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:53:43, skipping insertion in model container [2022-12-13 16:53:43,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:53:43" (3/3) ... [2022-12-13 16:53:43,449 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2022-12-13 16:53:43,456 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:53:43,464 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:53:43,464 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:53:43,464 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:53:43,527 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 16:53:43,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 243 transitions, 510 flow [2022-12-13 16:53:43,635 INFO L130 PetriNetUnfolder]: 19/240 cut-off events. [2022-12-13 16:53:43,635 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:53:43,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 240 events. 19/240 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 203. Up to 2 conditions per place. [2022-12-13 16:53:43,640 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 243 transitions, 510 flow [2022-12-13 16:53:43,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 229 transitions, 476 flow [2022-12-13 16:53:43,654 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:53:43,665 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 229 transitions, 476 flow [2022-12-13 16:53:43,668 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 229 transitions, 476 flow [2022-12-13 16:53:43,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 229 transitions, 476 flow [2022-12-13 16:53:43,721 INFO L130 PetriNetUnfolder]: 19/229 cut-off events. [2022-12-13 16:53:43,721 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:53:43,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 229 events. 19/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 121 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 203. Up to 2 conditions per place. [2022-12-13 16:53:43,724 INFO L119 LiptonReduction]: Number of co-enabled transitions 1266 [2022-12-13 16:54:01,590 INFO L134 LiptonReduction]: Checked pairs total: 2564 [2022-12-13 16:54:01,590 INFO L136 LiptonReduction]: Total number of compositions: 240 [2022-12-13 16:54:01,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:54:01,604 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;@1bda25a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:54:01,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 16:54:01,610 INFO L130 PetriNetUnfolder]: 6/29 cut-off events. [2022-12-13 16:54:01,610 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:54:01,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:01,611 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:54:01,611 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 16:54:01,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:01,614 INFO L85 PathProgramCache]: Analyzing trace with hash 55315983, now seen corresponding path program 1 times [2022-12-13 16:54:01,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:01,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546953909] [2022-12-13 16:54:01,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:01,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:01,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:01,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:01,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 16:54:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:01,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:54:01,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:01,819 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 16:54:01,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:01,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:01,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546953909] [2022-12-13 16:54:01,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546953909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:01,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:01,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:54:01,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672619390] [2022-12-13 16:54:01,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:01,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:54:01,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:01,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:54:01,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:01,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 483 [2022-12-13 16:54:01,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 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 16:54:01,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:01,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 483 [2022-12-13 16:54:01,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:02,127 INFO L130 PetriNetUnfolder]: 451/666 cut-off events. [2022-12-13 16:54:02,127 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-12-13 16:54:02,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1414 conditions, 666 events. 451/666 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2368 event pairs, 73 based on Foata normal form. 1/500 useless extension candidates. Maximal degree in co-relation 1134. Up to 548 conditions per place. [2022-12-13 16:54:02,131 INFO L137 encePairwiseOnDemand]: 478/483 looper letters, 42 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2022-12-13 16:54:02,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 221 flow [2022-12-13 16:54:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:54:02,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:54:02,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 687 transitions. [2022-12-13 16:54:02,143 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.474120082815735 [2022-12-13 16:54:02,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 687 transitions. [2022-12-13 16:54:02,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 687 transitions. [2022-12-13 16:54:02,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:02,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 687 transitions. [2022-12-13 16:54:02,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 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 16:54:02,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 483.0) internal successors, (1932), 4 states have internal predecessors, (1932), 0 states have call successors, (0), 0 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 16:54:02,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 483.0) internal successors, (1932), 4 states have internal predecessors, (1932), 0 states have call successors, (0), 0 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 16:54:02,160 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 78 flow. Second operand 3 states and 687 transitions. [2022-12-13 16:54:02,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 221 flow [2022-12-13 16:54:02,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 47 transitions, 199 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 16:54:02,164 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 92 flow [2022-12-13 16:54:02,166 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2022-12-13 16:54:02,169 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2022-12-13 16:54:02,169 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 92 flow [2022-12-13 16:54:02,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 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 16:54:02,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:02,170 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:54:02,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:54:02,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:02,371 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 16:54:02,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:02,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1796591188, now seen corresponding path program 1 times [2022-12-13 16:54:02,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:02,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628161393] [2022-12-13 16:54:02,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:02,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:02,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:02,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:02,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 16:54:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:02,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:54:02,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:02,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:02,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:02,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628161393] [2022-12-13 16:54:02,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628161393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:02,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:02,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:54:02,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742628097] [2022-12-13 16:54:02,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:02,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:54:02,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:02,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:54:02,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:02,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 483 [2022-12-13 16:54:02,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 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 16:54:02,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:02,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 483 [2022-12-13 16:54:02,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:02,822 INFO L130 PetriNetUnfolder]: 533/810 cut-off events. [2022-12-13 16:54:02,822 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2022-12-13 16:54:02,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 810 events. 533/810 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2853 event pairs, 183 based on Foata normal form. 48/785 useless extension candidates. Maximal degree in co-relation 1199. Up to 512 conditions per place. [2022-12-13 16:54:02,829 INFO L137 encePairwiseOnDemand]: 480/483 looper letters, 48 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2022-12-13 16:54:02,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 50 transitions, 234 flow [2022-12-13 16:54:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:54:02,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:54:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-12-13 16:54:02,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47066942719116633 [2022-12-13 16:54:02,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-12-13 16:54:02,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-12-13 16:54:02,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:02,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-12-13 16:54:02,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 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 16:54:02,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 483.0) internal successors, (1932), 4 states have internal predecessors, (1932), 0 states have call successors, (0), 0 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 16:54:02,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 483.0) internal successors, (1932), 4 states have internal predecessors, (1932), 0 states have call successors, (0), 0 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 16:54:02,836 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 92 flow. Second operand 3 states and 682 transitions. [2022-12-13 16:54:02,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 50 transitions, 234 flow [2022-12-13 16:54:02,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 50 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:54:02,837 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 96 flow [2022-12-13 16:54:02,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2022-12-13 16:54:02,838 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2022-12-13 16:54:02,838 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 96 flow [2022-12-13 16:54:02,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 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 16:54:02,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:02,839 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:54:02,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 16:54:03,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:03,041 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 16:54:03,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1584563826, now seen corresponding path program 1 times [2022-12-13 16:54:03,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:03,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449911322] [2022-12-13 16:54:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:03,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:03,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:03,048 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:03,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 16:54:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:54:03,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:03,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:03,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:03,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449911322] [2022-12-13 16:54:03,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449911322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:03,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:03,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:54:03,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129758972] [2022-12-13 16:54:03,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:03,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:54:03,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:03,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:54:03,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:03,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 483 [2022-12-13 16:54:03,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 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 16:54:03,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:03,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 483 [2022-12-13 16:54:03,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:03,544 INFO L130 PetriNetUnfolder]: 549/834 cut-off events. [2022-12-13 16:54:03,544 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2022-12-13 16:54:03,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 834 events. 549/834 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2861 event pairs, 167 based on Foata normal form. 30/793 useless extension candidates. Maximal degree in co-relation 1478. Up to 520 conditions per place. [2022-12-13 16:54:03,546 INFO L137 encePairwiseOnDemand]: 480/483 looper letters, 42 selfloop transitions, 2 changer transitions 6/50 dead transitions. [2022-12-13 16:54:03,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 237 flow [2022-12-13 16:54:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:54:03,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:54:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2022-12-13 16:54:03,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4720496894409938 [2022-12-13 16:54:03,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2022-12-13 16:54:03,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2022-12-13 16:54:03,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:03,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2022-12-13 16:54:03,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 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 16:54:03,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 483.0) internal successors, (1932), 4 states have internal predecessors, (1932), 0 states have call successors, (0), 0 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 16:54:03,552 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 483.0) internal successors, (1932), 4 states have internal predecessors, (1932), 0 states have call successors, (0), 0 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 16:54:03,552 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 96 flow. Second operand 3 states and 684 transitions. [2022-12-13 16:54:03,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 237 flow [2022-12-13 16:54:03,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:54:03,553 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 102 flow [2022-12-13 16:54:03,553 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2022-12-13 16:54:03,554 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2022-12-13 16:54:03,554 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 102 flow [2022-12-13 16:54:03,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 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 16:54:03,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:03,555 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:54:03,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 16:54:03,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:03,755 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 16:54:03,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:03,756 INFO L85 PathProgramCache]: Analyzing trace with hash -35196293, now seen corresponding path program 1 times [2022-12-13 16:54:03,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:03,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596993803] [2022-12-13 16:54:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:03,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:03,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:03,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:03,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 16:54:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:54:03,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:03,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:03,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:03,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596993803] [2022-12-13 16:54:03,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596993803] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:03,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:03,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:54:03,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523985694] [2022-12-13 16:54:03,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:03,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:54:03,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:03,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:54:03,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:03,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 483 [2022-12-13 16:54:03,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 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 16:54:03,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:03,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 483 [2022-12-13 16:54:03,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:04,106 INFO L130 PetriNetUnfolder]: 353/544 cut-off events. [2022-12-13 16:54:04,106 INFO L131 PetriNetUnfolder]: For 216/216 co-relation queries the response was YES. [2022-12-13 16:54:04,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 544 events. 353/544 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1623 event pairs, 139 based on Foata normal form. 14/503 useless extension candidates. Maximal degree in co-relation 331. Up to 460 conditions per place. [2022-12-13 16:54:04,107 INFO L137 encePairwiseOnDemand]: 480/483 looper letters, 34 selfloop transitions, 2 changer transitions 7/43 dead transitions. [2022-12-13 16:54:04,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 43 transitions, 211 flow [2022-12-13 16:54:04,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:54:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:54:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2022-12-13 16:54:04,109 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46514837819185645 [2022-12-13 16:54:04,109 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2022-12-13 16:54:04,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2022-12-13 16:54:04,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:04,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2022-12-13 16:54:04,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 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 16:54:04,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 483.0) internal successors, (1932), 4 states have internal predecessors, (1932), 0 states have call successors, (0), 0 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 16:54:04,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 483.0) internal successors, (1932), 4 states have internal predecessors, (1932), 0 states have call successors, (0), 0 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 16:54:04,114 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 102 flow. Second operand 3 states and 674 transitions. [2022-12-13 16:54:04,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 43 transitions, 211 flow [2022-12-13 16:54:04,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 209 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:54:04,115 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 112 flow [2022-12-13 16:54:04,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2022-12-13 16:54:04,116 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2022-12-13 16:54:04,116 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 112 flow [2022-12-13 16:54:04,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 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 16:54:04,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:04,117 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:54:04,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 16:54:04,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:04,318 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 16:54:04,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:04,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1847738768, now seen corresponding path program 1 times [2022-12-13 16:54:04,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:04,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534870593] [2022-12-13 16:54:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:04,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:04,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:04,321 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:04,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 16:54:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:04,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 16:54:04,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:54:04,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:04,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:04,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534870593] [2022-12-13 16:54:04,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534870593] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:04,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:04,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:54:04,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202381636] [2022-12-13 16:54:04,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:04,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:54:04,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:04,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:54:04,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:54:04,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 483 [2022-12-13 16:54:04,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 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 16:54:04,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:04,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 483 [2022-12-13 16:54:04,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:04,981 INFO L130 PetriNetUnfolder]: 392/628 cut-off events. [2022-12-13 16:54:04,981 INFO L131 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2022-12-13 16:54:04,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1576 conditions, 628 events. 392/628 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2000 event pairs, 291 based on Foata normal form. 14/636 useless extension candidates. Maximal degree in co-relation 538. Up to 545 conditions per place. [2022-12-13 16:54:04,983 INFO L137 encePairwiseOnDemand]: 479/483 looper letters, 33 selfloop transitions, 2 changer transitions 19/54 dead transitions. [2022-12-13 16:54:04,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 266 flow [2022-12-13 16:54:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:54:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:54:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 855 transitions. [2022-12-13 16:54:04,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44254658385093165 [2022-12-13 16:54:04,985 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 855 transitions. [2022-12-13 16:54:04,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 855 transitions. [2022-12-13 16:54:04,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:04,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 855 transitions. [2022-12-13 16:54:04,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 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 16:54:04,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 483.0) internal successors, (2415), 5 states have internal predecessors, (2415), 0 states have call successors, (0), 0 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 16:54:04,989 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 483.0) internal successors, (2415), 5 states have internal predecessors, (2415), 0 states have call successors, (0), 0 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 16:54:04,990 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 112 flow. Second operand 4 states and 855 transitions. [2022-12-13 16:54:04,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 266 flow [2022-12-13 16:54:04,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:54:04,991 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 124 flow [2022-12-13 16:54:04,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2022-12-13 16:54:04,992 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2022-12-13 16:54:04,992 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 124 flow [2022-12-13 16:54:04,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 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 16:54:04,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:04,993 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:54:05,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-13 16:54:05,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:05,194 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 16:54:05,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:05,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1230260476, now seen corresponding path program 1 times [2022-12-13 16:54:05,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:05,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340111822] [2022-12-13 16:54:05,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:05,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:05,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:05,197 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:05,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 16:54:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:05,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:54:05,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:05,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:05,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:54:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:54:06,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:54:06,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340111822] [2022-12-13 16:54:06,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340111822] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:54:06,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:54:06,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-12-13 16:54:06,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336975232] [2022-12-13 16:54:06,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:54:06,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 16:54:06,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:54:06,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 16:54:06,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:54:07,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 483 [2022-12-13 16:54:07,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 124 flow. Second operand has 12 states, 12 states have (on average 194.5) internal successors, (2334), 12 states have internal predecessors, (2334), 0 states have call successors, (0), 0 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 16:54:07,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:54:07,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 483 [2022-12-13 16:54:07,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:08,995 INFO L130 PetriNetUnfolder]: 949/1466 cut-off events. [2022-12-13 16:54:08,995 INFO L131 PetriNetUnfolder]: For 722/722 co-relation queries the response was YES. [2022-12-13 16:54:08,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 1466 events. 949/1466 cut-off events. For 722/722 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5566 event pairs, 383 based on Foata normal form. 50/1510 useless extension candidates. Maximal degree in co-relation 3777. Up to 492 conditions per place. [2022-12-13 16:54:08,999 INFO L137 encePairwiseOnDemand]: 476/483 looper letters, 61 selfloop transitions, 11 changer transitions 32/104 dead transitions. [2022-12-13 16:54:08,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 104 transitions, 540 flow [2022-12-13 16:54:09,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:54:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 16:54:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1821 transitions. [2022-12-13 16:54:09,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4189095928226363 [2022-12-13 16:54:09,002 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1821 transitions. [2022-12-13 16:54:09,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1821 transitions. [2022-12-13 16:54:09,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:54:09,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1821 transitions. [2022-12-13 16:54:09,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 202.33333333333334) internal successors, (1821), 9 states have internal predecessors, (1821), 0 states have call successors, (0), 0 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 16:54:09,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 483.0) internal successors, (4830), 10 states have internal predecessors, (4830), 0 states have call successors, (0), 0 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 16:54:09,009 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 483.0) internal successors, (4830), 10 states have internal predecessors, (4830), 0 states have call successors, (0), 0 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 16:54:09,009 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 124 flow. Second operand 9 states and 1821 transitions. [2022-12-13 16:54:09,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 104 transitions, 540 flow [2022-12-13 16:54:09,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 104 transitions, 532 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 16:54:09,011 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 197 flow [2022-12-13 16:54:09,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=483, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=197, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2022-12-13 16:54:09,012 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2022-12-13 16:54:09,012 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 197 flow [2022-12-13 16:54:09,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 194.5) internal successors, (2334), 12 states have internal predecessors, (2334), 0 states have call successors, (0), 0 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 16:54:09,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:54:09,013 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:54:09,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 16:54:09,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:09,215 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 16:54:09,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:09,216 INFO L85 PathProgramCache]: Analyzing trace with hash -287353595, now seen corresponding path program 1 times [2022-12-13 16:54:09,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:54:09,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191959364] [2022-12-13 16:54:09,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:09,219 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:54:09,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:54:09,222 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:54:09,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b487e28a-3a72-47b6-a46a-77c5f77a712d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 16:54:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:09,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 16:54:09,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:54:24,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:54:46,112 WARN L233 SmtUtils]: Spent 16.56s on a formula simplification. DAG size of input: 70 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:54:48,226 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int| c_~manager~0.base))) (let ((.cse4 (bvmul (_ bv4 32) c_~client_back~0)) (.cse3 (let ((.cse8 (bvmul (_ bv4 32) c_~manager_back~0))) (concat (concat (concat (select .cse5 (bvadd c_~manager~0.offset .cse8 (_ bv3 32))) (select .cse5 (bvadd c_~manager~0.offset (_ bv2 32) .cse8))) (select .cse5 (bvadd c_~manager~0.offset .cse8 (_ bv1 32)))) (select .cse5 (bvadd c_~manager~0.offset .cse8)))))) (let ((.cse0 (forall ((~client~0.offset (_ BitVec 32)) (~client~0.base (_ BitVec 32))) (not (= (let ((.cse7 (select |c_#memory_int| ~client~0.base))) (concat (concat (concat (select .cse7 (bvadd (_ bv3 32) ~client~0.offset .cse4)) (select .cse7 (bvadd (_ bv2 32) ~client~0.offset .cse4))) (select .cse7 (bvadd ~client~0.offset (_ bv1 32) .cse4))) (select .cse7 (bvadd ~client~0.offset .cse4)))) .cse3))))) (and (or (not (= c_~safe~0 (_ bv0 8))) .cse0) (forall ((~client~0.offset (_ BitVec 32)) (~client~0.base (_ BitVec 32))) (let ((.cse1 (select |c_#memory_int| ~client~0.base))) (or (= (let ((.cse2 (bvmul (_ bv4 32) c_~client_front~0))) (concat (concat (concat (select .cse1 (bvadd .cse2 (_ bv3 32) ~client~0.offset)) (select .cse1 (bvadd .cse2 (_ bv2 32) ~client~0.offset))) (select .cse1 (bvadd .cse2 ~client~0.offset (_ bv1 32)))) (select .cse1 (bvadd .cse2 ~client~0.offset)))) .cse3) (not (= (concat (concat (concat (select .cse1 (bvadd (_ bv3 32) ~client~0.offset .cse4)) (select .cse1 (bvadd (_ bv2 32) ~client~0.offset .cse4))) (select .cse1 (bvadd ~client~0.offset (_ bv1 32) .cse4))) (select .cse1 (bvadd ~client~0.offset .cse4))) .cse3))))) (or .cse0 (= .cse3 (let ((.cse6 (bvmul (_ bv4 32) c_~manager_front~0))) (concat (concat (concat (select .cse5 (bvadd c_~manager~0.offset (_ bv3 32) .cse6)) (select .cse5 (bvadd c_~manager~0.offset (_ bv2 32) .cse6))) (select .cse5 (bvadd c_~manager~0.offset (_ bv1 32) .cse6))) (select .cse5 (bvadd c_~manager~0.offset .cse6)))))))))) is different from false [2022-12-13 16:55:35,831 WARN L233 SmtUtils]: Spent 36.82s on a formula simplification. DAG size of input: 99 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:56:12,396 WARN L233 SmtUtils]: Spent 28.71s on a formula simplification that was a NOOP. DAG size: 115 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)