./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe034_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe034_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8 --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 f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e --- 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-e04fb08 [2022-11-16 12:39:47,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:39:47,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:39:47,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:39:47,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:39:47,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:39:47,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:39:47,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:39:47,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:39:47,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:39:47,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:39:47,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:39:47,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:39:47,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:39:47,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:39:47,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:39:47,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:39:47,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:39:47,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:39:47,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:39:47,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:39:47,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:39:47,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:39:47,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:39:47,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:39:47,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:39:47,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:39:47,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:39:47,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:39:47,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:39:47,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:39:47,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:39:47,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:39:47,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:39:47,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:39:47,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:39:47,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:39:47,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:39:47,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:39:47,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:39:47,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:39:47,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:39:47,361 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:39:47,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:39:47,363 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:39:47,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:39:47,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:39:47,364 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:39:47,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:39:47,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:39:47,366 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:39:47,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:39:47,367 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:39:47,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:39:47,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:39:47,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:39:47,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:39:47,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:39:47,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:39:47,369 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:39:47,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:39:47,369 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:39:47,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:39:47,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:39:47,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:39:47,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:39:47,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:39:47,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:39:47,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:39:47,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:39:47,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:39:47,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:39:47,374 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:39:47,374 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:39:47,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:39:47,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e [2022-11-16 12:39:47,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:39:47,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:39:47,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:39:47,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:39:47,734 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:39:47,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-wmm/safe034_tso.i [2022-11-16 12:39:47,829 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/data/15df8c815/d8845e28080043fdad48e904af398c20/FLAG1172304e5 [2022-11-16 12:39:48,554 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:39:48,555 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/sv-benchmarks/c/pthread-wmm/safe034_tso.i [2022-11-16 12:39:48,567 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/data/15df8c815/d8845e28080043fdad48e904af398c20/FLAG1172304e5 [2022-11-16 12:39:48,774 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/data/15df8c815/d8845e28080043fdad48e904af398c20 [2022-11-16 12:39:48,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:39:48,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:39:48,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:39:48,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:39:48,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:39:48,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:39:48" (1/1) ... [2022-11-16 12:39:48,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cea8d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:48, skipping insertion in model container [2022-11-16 12:39:48,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:39:48" (1/1) ... [2022-11-16 12:39:48,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:39:48,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:39:49,063 WARN L229 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_80457d47-a767-4fdd-911d-c1d9b43083d6/sv-benchmarks/c/pthread-wmm/safe034_tso.i[945,958] [2022-11-16 12:39:49,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:39:49,242 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:39:49,255 WARN L229 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_80457d47-a767-4fdd-911d-c1d9b43083d6/sv-benchmarks/c/pthread-wmm/safe034_tso.i[945,958] [2022-11-16 12:39:49,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:39:49,322 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:39:49,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:49 WrapperNode [2022-11-16 12:39:49,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:39:49,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:39:49,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:39:49,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:39:49,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:49" (1/1) ... [2022-11-16 12:39:49,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:49" (1/1) ... [2022-11-16 12:39:49,398 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-16 12:39:49,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:39:49,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:39:49,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:39:49,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:39:49,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:49" (1/1) ... [2022-11-16 12:39:49,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:49" (1/1) ... [2022-11-16 12:39:49,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:49" (1/1) ... [2022-11-16 12:39:49,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:49" (1/1) ... [2022-11-16 12:39:49,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:49" (1/1) ... [2022-11-16 12:39:49,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:49" (1/1) ... [2022-11-16 12:39:49,451 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:49" (1/1) ... [2022-11-16 12:39:49,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:49" (1/1) ... [2022-11-16 12:39:49,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:39:49,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:39:49,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:39:49,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:39:49,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:49" (1/1) ... [2022-11-16 12:39:49,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:39:49,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:49,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:39:49,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:39:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:39:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:39:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:39:49,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:39:49,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:39:49,565 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-16 12:39:49,565 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-16 12:39:49,565 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-16 12:39:49,566 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-16 12:39:49,567 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-16 12:39:49,567 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-16 12:39:49,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:39:49,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:39:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:39:49,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:39:49,569 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:39:49,752 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:39:49,754 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:39:50,030 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:39:50,038 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:39:50,041 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:39:50,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:50 BoogieIcfgContainer [2022-11-16 12:39:50,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:39:50,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:39:50,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:39:50,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:39:50,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:39:48" (1/3) ... [2022-11-16 12:39:50,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa9576e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:39:50, skipping insertion in model container [2022-11-16 12:39:50,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:49" (2/3) ... [2022-11-16 12:39:50,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa9576e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:39:50, skipping insertion in model container [2022-11-16 12:39:50,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:50" (3/3) ... [2022-11-16 12:39:50,059 INFO L112 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2022-11-16 12:39:50,072 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:39:50,084 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:39:50,085 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:39:50,085 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:39:50,168 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:39:50,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-11-16 12:39:50,305 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-16 12:39:50,308 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:39:50,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-16 12:39:50,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-11-16 12:39:50,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-11-16 12:39:50,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:39:50,361 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;@4ba2cc6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:39:50,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:39:50,415 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-11-16 12:39:50,416 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:39:50,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:50,417 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, 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] [2022-11-16 12:39:50,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:39:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:50,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1473123396, now seen corresponding path program 1 times [2022-11-16 12:39:50,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:50,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299185167] [2022-11-16 12:39:50,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:50,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:51,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:51,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299185167] [2022-11-16 12:39:51,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299185167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:51,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:51,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:39:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443022650] [2022-11-16 12:39:51,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:51,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:39:51,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:51,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:39:51,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:39:51,374 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2022-11-16 12:39:51,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:51,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:51,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2022-11-16 12:39:51,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:51,592 INFO L130 PetriNetUnfolder]: 26/176 cut-off events. [2022-11-16 12:39:51,593 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 12:39:51,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 176 events. 26/176 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 505 event pairs, 5 based on Foata normal form. 7/180 useless extension candidates. Maximal degree in co-relation 223. Up to 35 conditions per place. [2022-11-16 12:39:51,596 INFO L137 encePairwiseOnDemand]: 84/92 looper letters, 13 selfloop transitions, 3 changer transitions 19/97 dead transitions. [2022-11-16 12:39:51,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 97 transitions, 279 flow [2022-11-16 12:39:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:39:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:39:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 723 transitions. [2022-11-16 12:39:51,614 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8731884057971014 [2022-11-16 12:39:51,615 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 723 transitions. [2022-11-16 12:39:51,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 723 transitions. [2022-11-16 12:39:51,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:51,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 723 transitions. [2022-11-16 12:39:51,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:51,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 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) [2022-11-16 12:39:51,648 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 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) [2022-11-16 12:39:51,650 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 723 transitions. [2022-11-16 12:39:51,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 97 transitions, 279 flow [2022-11-16 12:39:51,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 97 transitions, 274 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:39:51,662 INFO L231 Difference]: Finished difference. Result has 96 places, 76 transitions, 197 flow [2022-11-16 12:39:51,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=197, PETRI_PLACES=96, PETRI_TRANSITIONS=76} [2022-11-16 12:39:51,671 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2022-11-16 12:39:51,671 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 76 transitions, 197 flow [2022-11-16 12:39:51,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:51,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:51,673 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, 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] [2022-11-16 12:39:51,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:39:51,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:39:51,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:51,675 INFO L85 PathProgramCache]: Analyzing trace with hash 815626565, now seen corresponding path program 1 times [2022-11-16 12:39:51,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:51,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819832709] [2022-11-16 12:39:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:51,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:52,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:52,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:52,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819832709] [2022-11-16 12:39:52,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819832709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:52,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:52,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:39:52,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363745766] [2022-11-16 12:39:52,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:52,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:39:52,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:52,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:39:52,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:39:52,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-11-16 12:39:52,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 76 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:52,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:52,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-11-16 12:39:52,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:52,293 INFO L130 PetriNetUnfolder]: 178/508 cut-off events. [2022-11-16 12:39:52,294 INFO L131 PetriNetUnfolder]: For 214/214 co-relation queries the response was YES. [2022-11-16 12:39:52,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 508 events. 178/508 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2745 event pairs, 15 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 979. Up to 110 conditions per place. [2022-11-16 12:39:52,301 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 15 changer transitions 5/108 dead transitions. [2022-11-16 12:39:52,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 108 transitions, 357 flow [2022-11-16 12:39:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:39:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:39:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2022-11-16 12:39:52,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2022-11-16 12:39:52,305 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2022-11-16 12:39:52,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2022-11-16 12:39:52,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:52,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2022-11-16 12:39:52,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:52,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:52,312 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:52,312 INFO L175 Difference]: Start difference. First operand has 96 places, 76 transitions, 197 flow. Second operand 10 states and 798 transitions. [2022-11-16 12:39:52,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 108 transitions, 357 flow [2022-11-16 12:39:52,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 108 transitions, 348 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-16 12:39:52,318 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 297 flow [2022-11-16 12:39:52,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=297, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2022-11-16 12:39:52,319 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 17 predicate places. [2022-11-16 12:39:52,319 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 297 flow [2022-11-16 12:39:52,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:52,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:52,320 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, 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] [2022-11-16 12:39:52,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:39:52,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:39:52,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:52,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1297723974, now seen corresponding path program 1 times [2022-11-16 12:39:52,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:52,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905071728] [2022-11-16 12:39:52,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:52,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:52,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:52,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905071728] [2022-11-16 12:39:52,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905071728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:52,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:52,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:39:52,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766268439] [2022-11-16 12:39:52,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:52,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:39:52,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:52,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:39:52,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:39:52,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-11-16 12:39:52,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:52,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:52,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-11-16 12:39:52,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:52,935 INFO L130 PetriNetUnfolder]: 154/466 cut-off events. [2022-11-16 12:39:52,936 INFO L131 PetriNetUnfolder]: For 933/935 co-relation queries the response was YES. [2022-11-16 12:39:52,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 466 events. 154/466 cut-off events. For 933/935 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2517 event pairs, 4 based on Foata normal form. 9/459 useless extension candidates. Maximal degree in co-relation 1420. Up to 157 conditions per place. [2022-11-16 12:39:52,941 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 28 changer transitions 11/127 dead transitions. [2022-11-16 12:39:52,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 127 transitions, 663 flow [2022-11-16 12:39:52,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:39:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:39:52,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1036 transitions. [2022-11-16 12:39:52,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8662207357859532 [2022-11-16 12:39:52,945 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1036 transitions. [2022-11-16 12:39:52,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1036 transitions. [2022-11-16 12:39:52,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:52,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1036 transitions. [2022-11-16 12:39:52,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:52,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:52,953 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:52,954 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 297 flow. Second operand 13 states and 1036 transitions. [2022-11-16 12:39:52,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 127 transitions, 663 flow [2022-11-16 12:39:52,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 127 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:39:52,965 INFO L231 Difference]: Finished difference. Result has 118 places, 106 transitions, 521 flow [2022-11-16 12:39:52,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=521, PETRI_PLACES=118, PETRI_TRANSITIONS=106} [2022-11-16 12:39:52,968 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 34 predicate places. [2022-11-16 12:39:52,968 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 106 transitions, 521 flow [2022-11-16 12:39:52,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:52,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:52,969 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, 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, 1, 1, 1] [2022-11-16 12:39:52,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:39:52,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:39:52,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:52,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1166515272, now seen corresponding path program 1 times [2022-11-16 12:39:52,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:52,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894629575] [2022-11-16 12:39:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:52,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:53,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:53,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894629575] [2022-11-16 12:39:53,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894629575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:53,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:53,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:39:53,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215390885] [2022-11-16 12:39:53,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:53,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:39:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:53,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:39:53,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:39:53,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-11-16 12:39:53,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 106 transitions, 521 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:53,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:53,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-11-16 12:39:53,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:53,595 INFO L130 PetriNetUnfolder]: 104/368 cut-off events. [2022-11-16 12:39:53,596 INFO L131 PetriNetUnfolder]: For 1377/1389 co-relation queries the response was YES. [2022-11-16 12:39:53,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 368 events. 104/368 cut-off events. For 1377/1389 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2095 event pairs, 0 based on Foata normal form. 7/358 useless extension candidates. Maximal degree in co-relation 1439. Up to 117 conditions per place. [2022-11-16 12:39:53,600 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 22 selfloop transitions, 32 changer transitions 19/135 dead transitions. [2022-11-16 12:39:53,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 135 transitions, 861 flow [2022-11-16 12:39:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:39:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:39:53,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1258 transitions. [2022-11-16 12:39:53,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8546195652173914 [2022-11-16 12:39:53,605 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1258 transitions. [2022-11-16 12:39:53,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1258 transitions. [2022-11-16 12:39:53,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:53,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1258 transitions. [2022-11-16 12:39:53,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.625) internal successors, (1258), 16 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:53,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:53,617 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:53,618 INFO L175 Difference]: Start difference. First operand has 118 places, 106 transitions, 521 flow. Second operand 16 states and 1258 transitions. [2022-11-16 12:39:53,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 135 transitions, 861 flow [2022-11-16 12:39:53,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 135 transitions, 773 flow, removed 37 selfloop flow, removed 7 redundant places. [2022-11-16 12:39:53,636 INFO L231 Difference]: Finished difference. Result has 133 places, 107 transitions, 547 flow [2022-11-16 12:39:53,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=547, PETRI_PLACES=133, PETRI_TRANSITIONS=107} [2022-11-16 12:39:53,638 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 49 predicate places. [2022-11-16 12:39:53,640 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 107 transitions, 547 flow [2022-11-16 12:39:53,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:53,641 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:53,641 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:53,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:39:53,642 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:39:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:53,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1964334236, now seen corresponding path program 1 times [2022-11-16 12:39:53,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:53,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096720728] [2022-11-16 12:39:53,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:53,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:53,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:53,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096720728] [2022-11-16 12:39:53,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096720728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:53,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:53,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:39:53,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772237379] [2022-11-16 12:39:53,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:53,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:39:53,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:53,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:39:53,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:39:53,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-11-16 12:39:53,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 107 transitions, 547 flow. Second operand has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:53,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:53,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-11-16 12:39:53,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:54,138 INFO L130 PetriNetUnfolder]: 146/766 cut-off events. [2022-11-16 12:39:54,139 INFO L131 PetriNetUnfolder]: For 1934/1974 co-relation queries the response was YES. [2022-11-16 12:39:54,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 766 events. 146/766 cut-off events. For 1934/1974 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6482 event pairs, 2 based on Foata normal form. 1/725 useless extension candidates. Maximal degree in co-relation 2358. Up to 101 conditions per place. [2022-11-16 12:39:54,147 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 21 selfloop transitions, 11 changer transitions 5/124 dead transitions. [2022-11-16 12:39:54,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 124 transitions, 669 flow [2022-11-16 12:39:54,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:39:54,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:39:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 595 transitions. [2022-11-16 12:39:54,150 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8084239130434783 [2022-11-16 12:39:54,150 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 595 transitions. [2022-11-16 12:39:54,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 595 transitions. [2022-11-16 12:39:54,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:54,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 595 transitions. [2022-11-16 12:39:54,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.375) internal successors, (595), 8 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:54,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:54,155 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:54,155 INFO L175 Difference]: Start difference. First operand has 133 places, 107 transitions, 547 flow. Second operand 8 states and 595 transitions. [2022-11-16 12:39:54,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 124 transitions, 669 flow [2022-11-16 12:39:54,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 124 transitions, 572 flow, removed 15 selfloop flow, removed 15 redundant places. [2022-11-16 12:39:54,184 INFO L231 Difference]: Finished difference. Result has 128 places, 115 transitions, 536 flow [2022-11-16 12:39:54,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=536, PETRI_PLACES=128, PETRI_TRANSITIONS=115} [2022-11-16 12:39:54,188 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 44 predicate places. [2022-11-16 12:39:54,188 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 115 transitions, 536 flow [2022-11-16 12:39:54,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:54,190 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:54,190 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:54,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:39:54,190 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:39:54,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash -822754414, now seen corresponding path program 2 times [2022-11-16 12:39:54,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:54,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210081487] [2022-11-16 12:39:54,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:54,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:54,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:54,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:54,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210081487] [2022-11-16 12:39:54,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210081487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:54,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:54,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:39:54,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850055512] [2022-11-16 12:39:54,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:54,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:39:54,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:54,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:39:54,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:39:54,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-11-16 12:39:54,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 115 transitions, 536 flow. Second operand has 7 states, 7 states have (on average 74.28571428571429) internal successors, (520), 7 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:54,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:54,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-11-16 12:39:54,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:54,698 INFO L130 PetriNetUnfolder]: 207/1093 cut-off events. [2022-11-16 12:39:54,698 INFO L131 PetriNetUnfolder]: For 1560/1581 co-relation queries the response was YES. [2022-11-16 12:39:54,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2975 conditions, 1093 events. 207/1093 cut-off events. For 1560/1581 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10354 event pairs, 6 based on Foata normal form. 1/1038 useless extension candidates. Maximal degree in co-relation 2950. Up to 122 conditions per place. [2022-11-16 12:39:54,707 INFO L137 encePairwiseOnDemand]: 84/92 looper letters, 17 selfloop transitions, 7 changer transitions 13/127 dead transitions. [2022-11-16 12:39:54,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 127 transitions, 670 flow [2022-11-16 12:39:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:39:54,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:39:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 533 transitions. [2022-11-16 12:39:54,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.827639751552795 [2022-11-16 12:39:54,709 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 533 transitions. [2022-11-16 12:39:54,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 533 transitions. [2022-11-16 12:39:54,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:54,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 533 transitions. [2022-11-16 12:39:54,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.14285714285714) internal successors, (533), 7 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:54,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:54,714 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:54,715 INFO L175 Difference]: Start difference. First operand has 128 places, 115 transitions, 536 flow. Second operand 7 states and 533 transitions. [2022-11-16 12:39:54,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 127 transitions, 670 flow [2022-11-16 12:39:54,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 127 transitions, 660 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-11-16 12:39:54,758 INFO L231 Difference]: Finished difference. Result has 133 places, 113 transitions, 547 flow [2022-11-16 12:39:54,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=547, PETRI_PLACES=133, PETRI_TRANSITIONS=113} [2022-11-16 12:39:54,762 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 49 predicate places. [2022-11-16 12:39:54,762 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 113 transitions, 547 flow [2022-11-16 12:39:54,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.28571428571429) internal successors, (520), 7 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:54,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:54,763 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:54,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:39:54,764 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:39:54,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:54,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1119843318, now seen corresponding path program 3 times [2022-11-16 12:39:54,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:54,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475191525] [2022-11-16 12:39:54,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:54,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:55,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:55,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475191525] [2022-11-16 12:39:55,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475191525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:55,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:55,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:39:55,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051060104] [2022-11-16 12:39:55,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:55,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:39:55,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:55,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:39:55,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:39:55,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-11-16 12:39:55,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 113 transitions, 547 flow. Second operand has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:55,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:55,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-11-16 12:39:55,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:55,264 INFO L130 PetriNetUnfolder]: 120/644 cut-off events. [2022-11-16 12:39:55,264 INFO L131 PetriNetUnfolder]: For 962/973 co-relation queries the response was YES. [2022-11-16 12:39:55,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1789 conditions, 644 events. 120/644 cut-off events. For 962/973 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5299 event pairs, 0 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 1765. Up to 76 conditions per place. [2022-11-16 12:39:55,270 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 0 selfloop transitions, 0 changer transitions 119/119 dead transitions. [2022-11-16 12:39:55,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 119 transitions, 657 flow [2022-11-16 12:39:55,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:39:55,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:39:55,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 587 transitions. [2022-11-16 12:39:55,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7975543478260869 [2022-11-16 12:39:55,273 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 587 transitions. [2022-11-16 12:39:55,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 587 transitions. [2022-11-16 12:39:55,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:55,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 587 transitions. [2022-11-16 12:39:55,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 73.375) internal successors, (587), 8 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:55,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:55,277 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:55,278 INFO L175 Difference]: Start difference. First operand has 133 places, 113 transitions, 547 flow. Second operand 8 states and 587 transitions. [2022-11-16 12:39:55,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 119 transitions, 657 flow [2022-11-16 12:39:55,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 119 transitions, 624 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-11-16 12:39:55,298 INFO L231 Difference]: Finished difference. Result has 131 places, 0 transitions, 0 flow [2022-11-16 12:39:55,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=131, PETRI_TRANSITIONS=0} [2022-11-16 12:39:55,299 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 47 predicate places. [2022-11-16 12:39:55,300 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 0 transitions, 0 flow [2022-11-16 12:39:55,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:55,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-16 12:39:55,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-16 12:39:55,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-16 12:39:55,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-16 12:39:55,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:39:55,306 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-11-16 12:39:55,310 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:39:55,310 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:39:55,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:39:55 BasicIcfg [2022-11-16 12:39:55,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:39:55,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:39:55,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:39:55,318 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:39:55,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:50" (3/4) ... [2022-11-16 12:39:55,322 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:39:55,330 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-16 12:39:55,331 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-16 12:39:55,331 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-16 12:39:55,336 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-16 12:39:55,336 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:39:55,336 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:39:55,337 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:39:55,374 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:39:55,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:39:55,375 INFO L158 Benchmark]: Toolchain (without parser) took 6596.12ms. Allocated memory was 92.3MB in the beginning and 180.4MB in the end (delta: 88.1MB). Free memory was 55.4MB in the beginning and 106.7MB in the end (delta: -51.2MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2022-11-16 12:39:55,375 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:39:55,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.00ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 55.3MB in the beginning and 83.9MB in the end (delta: -28.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:39:55,376 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.76ms. Allocated memory is still 117.4MB. Free memory was 83.9MB in the beginning and 81.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:39:55,377 INFO L158 Benchmark]: Boogie Preprocessor took 65.75ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:39:55,377 INFO L158 Benchmark]: RCFGBuilder took 580.75ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 66.5MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:39:55,378 INFO L158 Benchmark]: TraceAbstraction took 5266.60ms. Allocated memory was 117.4MB in the beginning and 180.4MB in the end (delta: 62.9MB). Free memory was 65.8MB in the beginning and 109.8MB in the end (delta: -44.0MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2022-11-16 12:39:55,378 INFO L158 Benchmark]: Witness Printer took 56.77ms. Allocated memory is still 180.4MB. Free memory was 109.8MB in the beginning and 106.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:39:55,380 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 543.00ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 55.3MB in the beginning and 83.9MB in the end (delta: -28.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.76ms. Allocated memory is still 117.4MB. Free memory was 83.9MB in the beginning and 81.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.75ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 580.75ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 66.5MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5266.60ms. Allocated memory was 117.4MB in the beginning and 180.4MB in the end (delta: 62.9MB). Free memory was 65.8MB in the beginning and 109.8MB in the end (delta: -44.0MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * Witness Printer took 56.77ms. Allocated memory is still 180.4MB. Free memory was 109.8MB in the beginning and 106.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 270 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 270 mSDsluCounter, 306 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 240 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 397 IncrementalHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 66 mSDtfsCounter, 397 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=547occurred in iteration=4, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 435 NumberOfCodeBlocks, 435 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 428 ConstructedInterpolants, 0 QuantifiedInterpolants, 1466 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:39:55,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80457d47-a767-4fdd-911d-c1d9b43083d6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE