./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:42:57,189 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:42:57,255 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 00:42:57,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:42:57,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:42:57,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:42:57,283 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:42:57,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:42:57,284 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:42:57,285 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:42:57,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:42:57,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:42:57,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:42:57,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:42:57,288 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:42:57,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:42:57,289 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:42:57,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:42:57,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:42:57,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:42:57,291 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:42:57,292 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:42:57,292 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:42:57,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:42:57,293 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:42:57,293 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:42:57,293 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:42:57,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:42:57,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:42:57,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:42:57,295 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:42:57,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:42:57,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:42:57,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:42:57,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:42:57,296 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:42:57,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:42:57,297 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:42:57,297 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:42:57,297 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:42:57,297 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:42:57,298 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2023-11-29 00:42:57,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:42:57,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:42:57,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:42:57,571 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:42:57,572 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:42:57,573 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2023-11-29 00:43:00,275 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:43:00,497 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:43:00,498 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/sv-benchmarks/c/pthread/triangular-longest-2.i [2023-11-29 00:43:00,513 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/data/de14f747c/8dfd6310bb3e4fc382af9268bec1ae77/FLAG534cdc78d [2023-11-29 00:43:00,528 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/data/de14f747c/8dfd6310bb3e4fc382af9268bec1ae77 [2023-11-29 00:43:00,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:43:00,532 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:43:00,533 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:43:00,533 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:43:00,538 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:43:00,539 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:00,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183587f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00, skipping insertion in model container [2023-11-29 00:43:00,540 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:00,584 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:43:00,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:43:00,898 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:43:00,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:43:00,964 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:43:00,964 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:43:00,970 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:43:00,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00 WrapperNode [2023-11-29 00:43:00,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:43:00,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:43:00,971 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:43:00,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:43:00,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:00,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:01,010 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-29 00:43:01,010 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:43:01,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:43:01,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:43:01,011 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:43:01,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:01,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:01,023 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:01,036 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 00:43:01,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:01,037 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:01,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:01,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:01,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:01,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:01,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:43:01,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:43:01,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:43:01,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:43:01,055 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00" (1/1) ... [2023-11-29 00:43:01,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:43:01,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:01,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:43:01,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:43:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 00:43:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 00:43:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 00:43:01,125 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 00:43:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:43:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:43:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:43:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 00:43:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:43:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:43:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:43:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:43:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:43:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:43:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 00:43:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:43:01,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:43:01,129 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:43:01,256 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:43:01,259 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:43:01,400 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:43:01,492 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:43:01,492 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:43:01,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:43:01 BoogieIcfgContainer [2023-11-29 00:43:01,493 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:43:01,496 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:43:01,496 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:43:01,499 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:43:01,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:43:00" (1/3) ... [2023-11-29 00:43:01,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6f0c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:43:01, skipping insertion in model container [2023-11-29 00:43:01,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:43:00" (2/3) ... [2023-11-29 00:43:01,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6f0c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:43:01, skipping insertion in model container [2023-11-29 00:43:01,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:43:01" (3/3) ... [2023-11-29 00:43:01,501 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-11-29 00:43:01,516 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:43:01,516 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 00:43:01,516 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:43:01,551 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:43:01,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 78 flow [2023-11-29 00:43:01,604 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-11-29 00:43:01,604 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:43:01,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-29 00:43:01,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 78 flow [2023-11-29 00:43:01,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 33 transitions, 72 flow [2023-11-29 00:43:01,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:43:01,628 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@efb991a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:43:01,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-29 00:43:01,632 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:43:01,632 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 00:43:01,632 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:43:01,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:01,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:43:01,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:01,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash 6737, now seen corresponding path program 1 times [2023-11-29 00:43:01,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:01,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124171933] [2023-11-29 00:43:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:01,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:01,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:01,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124171933] [2023-11-29 00:43:01,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124171933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:01,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:01,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:01,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521827617] [2023-11-29 00:43:01,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:01,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:01,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:01,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:01,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:01,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-29 00:43:01,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:01,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:01,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-29 00:43:01,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:02,056 INFO L124 PetriNetUnfolderBase]: 88/193 cut-off events. [2023-11-29 00:43:02,056 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 00:43:02,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 193 events. 88/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 711 event pairs, 32 based on Foata normal form. 15/191 useless extension candidates. Maximal degree in co-relation 333. Up to 87 conditions per place. [2023-11-29 00:43:02,061 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 18 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-11-29 00:43:02,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 118 flow [2023-11-29 00:43:02,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-29 00:43:02,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-29 00:43:02,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-29 00:43:02,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-29 00:43:02,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:02,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-29 00:43:02,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,081 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 72 flow. Second operand 3 states and 72 transitions. [2023-11-29 00:43:02,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 118 flow [2023-11-29 00:43:02,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:43:02,086 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2023-11-29 00:43:02,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-29 00:43:02,092 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-29 00:43:02,092 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2023-11-29 00:43:02,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:02,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:43:02,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:43:02,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:02,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:02,094 INFO L85 PathProgramCache]: Analyzing trace with hash 6738, now seen corresponding path program 1 times [2023-11-29 00:43:02,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:02,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056312044] [2023-11-29 00:43:02,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:02,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:02,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:02,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056312044] [2023-11-29 00:43:02,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056312044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:02,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:02,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:02,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506651365] [2023-11-29 00:43:02,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:02,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:02,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:02,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:02,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:02,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 00:43:02,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:02,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 00:43:02,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:02,324 INFO L124 PetriNetUnfolderBase]: 70/165 cut-off events. [2023-11-29 00:43:02,324 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 00:43:02,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 165 events. 70/165 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 624 event pairs, 32 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 288. Up to 86 conditions per place. [2023-11-29 00:43:02,327 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-29 00:43:02,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 112 flow [2023-11-29 00:43:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-29 00:43:02,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-29 00:43:02,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-29 00:43:02,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-29 00:43:02,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:02,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-29 00:43:02,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,333 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 71 transitions. [2023-11-29 00:43:02,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 112 flow [2023-11-29 00:43:02,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:43:02,335 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 62 flow [2023-11-29 00:43:02,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-29 00:43:02,336 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-29 00:43:02,336 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 62 flow [2023-11-29 00:43:02,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:02,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:43:02,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:43:02,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:02,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:02,338 INFO L85 PathProgramCache]: Analyzing trace with hash 200868327, now seen corresponding path program 1 times [2023-11-29 00:43:02,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:02,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344014088] [2023-11-29 00:43:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:02,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:02,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:02,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344014088] [2023-11-29 00:43:02,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344014088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:02,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:02,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:02,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934863314] [2023-11-29 00:43:02,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:02,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:02,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:02,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:02,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 00:43:02,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:02,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 00:43:02,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:02,492 INFO L124 PetriNetUnfolderBase]: 70/164 cut-off events. [2023-11-29 00:43:02,492 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 00:43:02,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 164 events. 70/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 618 event pairs, 32 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 287. Up to 86 conditions per place. [2023-11-29 00:43:02,494 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-29 00:43:02,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 110 flow [2023-11-29 00:43:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-29 00:43:02,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-29 00:43:02,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-29 00:43:02,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-29 00:43:02,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:02,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-29 00:43:02,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,499 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 62 flow. Second operand 3 states and 71 transitions. [2023-11-29 00:43:02,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 110 flow [2023-11-29 00:43:02,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:43:02,501 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 60 flow [2023-11-29 00:43:02,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-29 00:43:02,502 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-29 00:43:02,503 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 60 flow [2023-11-29 00:43:02,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:02,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:43:02,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:43:02,504 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:02,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:02,504 INFO L85 PathProgramCache]: Analyzing trace with hash 200868326, now seen corresponding path program 1 times [2023-11-29 00:43:02,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:02,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261876449] [2023-11-29 00:43:02,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:02,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:02,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:02,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261876449] [2023-11-29 00:43:02,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261876449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:02,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:02,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:02,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721467861] [2023-11-29 00:43:02,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:02,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:02,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:02,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:02,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:02,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-29 00:43:02,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:02,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-29 00:43:02,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:02,613 INFO L124 PetriNetUnfolderBase]: 73/166 cut-off events. [2023-11-29 00:43:02,613 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 00:43:02,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 166 events. 73/166 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 600 event pairs, 34 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 295. Up to 92 conditions per place. [2023-11-29 00:43:02,615 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-29 00:43:02,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 110 flow [2023-11-29 00:43:02,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-29 00:43:02,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2023-11-29 00:43:02,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-29 00:43:02,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-29 00:43:02,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:02,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-29 00:43:02,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,619 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 60 flow. Second operand 3 states and 69 transitions. [2023-11-29 00:43:02,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 110 flow [2023-11-29 00:43:02,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:43:02,621 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 58 flow [2023-11-29 00:43:02,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-29 00:43:02,622 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-29 00:43:02,622 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 58 flow [2023-11-29 00:43:02,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:02,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:02,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:43:02,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:02,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:02,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1605654404, now seen corresponding path program 1 times [2023-11-29 00:43:02,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:02,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064778243] [2023-11-29 00:43:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:02,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:02,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:02,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064778243] [2023-11-29 00:43:02,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064778243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:02,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:02,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:43:02,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751310985] [2023-11-29 00:43:02,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:02,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:02,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:02,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:02,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:02,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 00:43:02,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:02,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 00:43:02,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:02,868 INFO L124 PetriNetUnfolderBase]: 70/154 cut-off events. [2023-11-29 00:43:02,868 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 00:43:02,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 154 events. 70/154 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 550 event pairs, 32 based on Foata normal form. 9/148 useless extension candidates. Maximal degree in co-relation 277. Up to 86 conditions per place. [2023-11-29 00:43:02,870 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 11 selfloop transitions, 1 changer transitions 7/30 dead transitions. [2023-11-29 00:43:02,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 106 flow [2023-11-29 00:43:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:43:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:43:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2023-11-29 00:43:02,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2023-11-29 00:43:02,872 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 88 transitions. [2023-11-29 00:43:02,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 88 transitions. [2023-11-29 00:43:02,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:02,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 88 transitions. [2023-11-29 00:43:02,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,875 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,875 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 58 flow. Second operand 4 states and 88 transitions. [2023-11-29 00:43:02,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 106 flow [2023-11-29 00:43:02,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:43:02,876 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 52 flow [2023-11-29 00:43:02,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-11-29 00:43:02,877 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-29 00:43:02,882 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 52 flow [2023-11-29 00:43:02,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:02,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:02,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:43:02,883 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:02,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1605653309, now seen corresponding path program 1 times [2023-11-29 00:43:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:02,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519805714] [2023-11-29 00:43:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:02,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:03,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:03,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519805714] [2023-11-29 00:43:03,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519805714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:03,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:03,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:43:03,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693329635] [2023-11-29 00:43:03,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:03,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:43:03,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:03,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:43:03,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:43:03,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:03,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:03,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:03,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:03,170 INFO L124 PetriNetUnfolderBase]: 273/483 cut-off events. [2023-11-29 00:43:03,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:43:03,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 483 events. 273/483 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1906 event pairs, 45 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 917. Up to 181 conditions per place. [2023-11-29 00:43:03,174 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 25 selfloop transitions, 4 changer transitions 20/55 dead transitions. [2023-11-29 00:43:03,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 55 transitions, 214 flow [2023-11-29 00:43:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:43:03,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:43:03,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2023-11-29 00:43:03,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2023-11-29 00:43:03,177 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 129 transitions. [2023-11-29 00:43:03,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 129 transitions. [2023-11-29 00:43:03,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:03,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 129 transitions. [2023-11-29 00:43:03,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,179 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,180 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 6 states and 129 transitions. [2023-11-29 00:43:03,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 55 transitions, 214 flow [2023-11-29 00:43:03,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 55 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:03,182 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 78 flow [2023-11-29 00:43:03,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-11-29 00:43:03,183 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-11-29 00:43:03,183 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 78 flow [2023-11-29 00:43:03,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:03,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:03,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:43:03,184 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:03,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:03,184 INFO L85 PathProgramCache]: Analyzing trace with hash -204762607, now seen corresponding path program 1 times [2023-11-29 00:43:03,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:03,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719655966] [2023-11-29 00:43:03,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:03,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:03,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:03,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719655966] [2023-11-29 00:43:03,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719655966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:03,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:03,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:43:03,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37403743] [2023-11-29 00:43:03,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:03,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:43:03,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:03,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:43:03,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:43:03,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:03,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:03,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:03,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:03,544 INFO L124 PetriNetUnfolderBase]: 382/711 cut-off events. [2023-11-29 00:43:03,544 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2023-11-29 00:43:03,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 711 events. 382/711 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3123 event pairs, 65 based on Foata normal form. 33/743 useless extension candidates. Maximal degree in co-relation 1598. Up to 246 conditions per place. [2023-11-29 00:43:03,551 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 9 changer transitions 20/81 dead transitions. [2023-11-29 00:43:03,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 81 transitions, 386 flow [2023-11-29 00:43:03,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:43:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:43:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2023-11-29 00:43:03,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-29 00:43:03,553 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 189 transitions. [2023-11-29 00:43:03,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 189 transitions. [2023-11-29 00:43:03,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:03,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 189 transitions. [2023-11-29 00:43:03,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.0) internal successors, (189), 9 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,557 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,557 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 78 flow. Second operand 9 states and 189 transitions. [2023-11-29 00:43:03,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 81 transitions, 386 flow [2023-11-29 00:43:03,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 81 transitions, 370 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-29 00:43:03,563 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 163 flow [2023-11-29 00:43:03,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=163, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2023-11-29 00:43:03,564 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-11-29 00:43:03,564 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 163 flow [2023-11-29 00:43:03,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:03,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:03,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:43:03,569 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:03,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:03,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1564829837, now seen corresponding path program 2 times [2023-11-29 00:43:03,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:03,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16764617] [2023-11-29 00:43:03,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:03,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:03,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:03,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16764617] [2023-11-29 00:43:03,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16764617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:03,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:03,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:43:03,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414767060] [2023-11-29 00:43:03,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:03,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:43:03,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:03,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:43:03,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:43:03,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:03,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:03,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:03,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:03,918 INFO L124 PetriNetUnfolderBase]: 328/618 cut-off events. [2023-11-29 00:43:03,918 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2023-11-29 00:43:03,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 618 events. 328/618 cut-off events. For 1001/1013 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2626 event pairs, 65 based on Foata normal form. 57/674 useless extension candidates. Maximal degree in co-relation 1730. Up to 234 conditions per place. [2023-11-29 00:43:03,924 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 38 selfloop transitions, 9 changer transitions 28/81 dead transitions. [2023-11-29 00:43:03,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 81 transitions, 503 flow [2023-11-29 00:43:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:43:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:43:03,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2023-11-29 00:43:03,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964285714285714 [2023-11-29 00:43:03,926 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 167 transitions. [2023-11-29 00:43:03,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 167 transitions. [2023-11-29 00:43:03,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:03,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 167 transitions. [2023-11-29 00:43:03,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,928 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,928 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 163 flow. Second operand 8 states and 167 transitions. [2023-11-29 00:43:03,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 81 transitions, 503 flow [2023-11-29 00:43:03,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 81 transitions, 495 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-29 00:43:03,935 INFO L231 Difference]: Finished difference. Result has 53 places, 36 transitions, 217 flow [2023-11-29 00:43:03,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=36} [2023-11-29 00:43:03,936 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-11-29 00:43:03,936 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 36 transitions, 217 flow [2023-11-29 00:43:03,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:03,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:03,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:43:03,937 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:03,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:03,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1376396266, now seen corresponding path program 1 times [2023-11-29 00:43:03,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:03,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295126712] [2023-11-29 00:43:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:03,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:04,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:04,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295126712] [2023-11-29 00:43:04,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295126712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:04,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:04,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:43:04,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304110760] [2023-11-29 00:43:04,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:04,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:43:04,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:43:04,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:43:04,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:04,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 36 transitions, 217 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:04,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:04,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:04,369 INFO L124 PetriNetUnfolderBase]: 337/630 cut-off events. [2023-11-29 00:43:04,369 INFO L125 PetriNetUnfolderBase]: For 1703/1715 co-relation queries the response was YES. [2023-11-29 00:43:04,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 630 events. 337/630 cut-off events. For 1703/1715 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2667 event pairs, 68 based on Foata normal form. 30/659 useless extension candidates. Maximal degree in co-relation 1933. Up to 237 conditions per place. [2023-11-29 00:43:04,376 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 16 changer transitions 24/92 dead transitions. [2023-11-29 00:43:04,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 614 flow [2023-11-29 00:43:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:43:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:43:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2023-11-29 00:43:04,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5792207792207792 [2023-11-29 00:43:04,378 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 223 transitions. [2023-11-29 00:43:04,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 223 transitions. [2023-11-29 00:43:04,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:04,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 223 transitions. [2023-11-29 00:43:04,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.272727272727273) internal successors, (223), 11 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,381 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,381 INFO L175 Difference]: Start difference. First operand has 53 places, 36 transitions, 217 flow. Second operand 11 states and 223 transitions. [2023-11-29 00:43:04,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 614 flow [2023-11-29 00:43:04,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 92 transitions, 547 flow, removed 24 selfloop flow, removed 7 redundant places. [2023-11-29 00:43:04,391 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 286 flow [2023-11-29 00:43:04,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=286, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2023-11-29 00:43:04,392 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-11-29 00:43:04,392 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 286 flow [2023-11-29 00:43:04,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:04,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:04,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:43:04,393 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:04,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:04,393 INFO L85 PathProgramCache]: Analyzing trace with hash 312700604, now seen corresponding path program 2 times [2023-11-29 00:43:04,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:04,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067904121] [2023-11-29 00:43:04,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:04,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:04,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:04,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067904121] [2023-11-29 00:43:04,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067904121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:04,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:04,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:43:04,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481339945] [2023-11-29 00:43:04,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:04,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:43:04,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:04,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:43:04,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:43:04,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:04,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 286 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:04,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:04,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:04,803 INFO L124 PetriNetUnfolderBase]: 508/942 cut-off events. [2023-11-29 00:43:04,803 INFO L125 PetriNetUnfolderBase]: For 3228/3246 co-relation queries the response was YES. [2023-11-29 00:43:04,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3087 conditions, 942 events. 508/942 cut-off events. For 3228/3246 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4345 event pairs, 53 based on Foata normal form. 45/984 useless extension candidates. Maximal degree in co-relation 3063. Up to 253 conditions per place. [2023-11-29 00:43:04,812 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 57 selfloop transitions, 20 changer transitions 23/106 dead transitions. [2023-11-29 00:43:04,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 106 transitions, 778 flow [2023-11-29 00:43:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:43:04,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:43:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2023-11-29 00:43:04,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5948051948051948 [2023-11-29 00:43:04,814 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 229 transitions. [2023-11-29 00:43:04,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 229 transitions. [2023-11-29 00:43:04,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:04,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 229 transitions. [2023-11-29 00:43:04,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,817 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,817 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 286 flow. Second operand 11 states and 229 transitions. [2023-11-29 00:43:04,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 106 transitions, 778 flow [2023-11-29 00:43:04,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 106 transitions, 712 flow, removed 27 selfloop flow, removed 4 redundant places. [2023-11-29 00:43:04,829 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 383 flow [2023-11-29 00:43:04,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=383, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2023-11-29 00:43:04,830 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-11-29 00:43:04,830 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 383 flow [2023-11-29 00:43:04,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:04,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:04,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:43:04,831 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:04,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:04,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1152289066, now seen corresponding path program 3 times [2023-11-29 00:43:04,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:04,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753224143] [2023-11-29 00:43:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:04,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:04,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:04,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753224143] [2023-11-29 00:43:04,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753224143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:04,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:04,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:43:04,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41245283] [2023-11-29 00:43:04,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:04,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:43:04,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:43:04,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:43:04,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:04,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 383 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:04,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:04,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:05,294 INFO L124 PetriNetUnfolderBase]: 481/897 cut-off events. [2023-11-29 00:43:05,294 INFO L125 PetriNetUnfolderBase]: For 5148/5166 co-relation queries the response was YES. [2023-11-29 00:43:05,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3398 conditions, 897 events. 481/897 cut-off events. For 5148/5166 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4091 event pairs, 59 based on Foata normal form. 63/957 useless extension candidates. Maximal degree in co-relation 3369. Up to 154 conditions per place. [2023-11-29 00:43:05,302 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 45 selfloop transitions, 25 changer transitions 33/109 dead transitions. [2023-11-29 00:43:05,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 971 flow [2023-11-29 00:43:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:43:05,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:43:05,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 226 transitions. [2023-11-29 00:43:05,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.587012987012987 [2023-11-29 00:43:05,305 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 226 transitions. [2023-11-29 00:43:05,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 226 transitions. [2023-11-29 00:43:05,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:05,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 226 transitions. [2023-11-29 00:43:05,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.545454545454547) internal successors, (226), 11 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:05,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:05,308 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:05,308 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 383 flow. Second operand 11 states and 226 transitions. [2023-11-29 00:43:05,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 971 flow [2023-11-29 00:43:05,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 109 transitions, 900 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-11-29 00:43:05,335 INFO L231 Difference]: Finished difference. Result has 77 places, 51 transitions, 482 flow [2023-11-29 00:43:05,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=482, PETRI_PLACES=77, PETRI_TRANSITIONS=51} [2023-11-29 00:43:05,336 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2023-11-29 00:43:05,336 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 51 transitions, 482 flow [2023-11-29 00:43:05,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:05,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:05,337 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:05,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:43:05,337 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:05,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:05,337 INFO L85 PathProgramCache]: Analyzing trace with hash -112936374, now seen corresponding path program 1 times [2023-11-29 00:43:05,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:05,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675220486] [2023-11-29 00:43:05,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:05,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:05,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:05,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675220486] [2023-11-29 00:43:05,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675220486] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:43:05,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607388179] [2023-11-29 00:43:05,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:05,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:05,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:05,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:05,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:43:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:05,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:43:05,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:05,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:05,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607388179] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:05,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:43:05,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 00:43:05,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676549297] [2023-11-29 00:43:05,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:05,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:43:05,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:05,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:43:05,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:43:05,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:05,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 51 transitions, 482 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:05,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:05,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:05,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:06,379 INFO L124 PetriNetUnfolderBase]: 589/1107 cut-off events. [2023-11-29 00:43:06,379 INFO L125 PetriNetUnfolderBase]: For 10463/10481 co-relation queries the response was YES. [2023-11-29 00:43:06,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4749 conditions, 1107 events. 589/1107 cut-off events. For 10463/10481 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4796 event pairs, 149 based on Foata normal form. 81/1187 useless extension candidates. Maximal degree in co-relation 4716. Up to 522 conditions per place. [2023-11-29 00:43:06,389 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 67 selfloop transitions, 17 changer transitions 67/157 dead transitions. [2023-11-29 00:43:06,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 157 transitions, 1554 flow [2023-11-29 00:43:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 00:43:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 00:43:06,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 383 transitions. [2023-11-29 00:43:06,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5759398496240602 [2023-11-29 00:43:06,392 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 383 transitions. [2023-11-29 00:43:06,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 383 transitions. [2023-11-29 00:43:06,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:06,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 383 transitions. [2023-11-29 00:43:06,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 20.157894736842106) internal successors, (383), 19 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:06,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 35.0) internal successors, (700), 20 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:06,397 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 35.0) internal successors, (700), 20 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:06,397 INFO L175 Difference]: Start difference. First operand has 77 places, 51 transitions, 482 flow. Second operand 19 states and 383 transitions. [2023-11-29 00:43:06,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 157 transitions, 1554 flow [2023-11-29 00:43:06,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 157 transitions, 1455 flow, removed 33 selfloop flow, removed 8 redundant places. [2023-11-29 00:43:06,419 INFO L231 Difference]: Finished difference. Result has 97 places, 57 transitions, 611 flow [2023-11-29 00:43:06,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=611, PETRI_PLACES=97, PETRI_TRANSITIONS=57} [2023-11-29 00:43:06,420 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 61 predicate places. [2023-11-29 00:43:06,420 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 57 transitions, 611 flow [2023-11-29 00:43:06,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:06,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:06,421 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:06,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:43:06,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 00:43:06,625 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:06,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:06,625 INFO L85 PathProgramCache]: Analyzing trace with hash -849015018, now seen corresponding path program 2 times [2023-11-29 00:43:06,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:06,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525997831] [2023-11-29 00:43:06,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:06,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:06,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:06,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525997831] [2023-11-29 00:43:06,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525997831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:43:06,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117959087] [2023-11-29 00:43:06,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:43:06,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:06,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:06,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:06,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:43:06,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:43:06,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:06,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:43:06,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:06,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:07,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117959087] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:07,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:43:07,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 00:43:07,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348281456] [2023-11-29 00:43:07,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:07,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:43:07,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:07,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:43:07,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:43:07,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:07,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 57 transitions, 611 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:07,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:07,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:07,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:07,797 INFO L124 PetriNetUnfolderBase]: 877/1635 cut-off events. [2023-11-29 00:43:07,798 INFO L125 PetriNetUnfolderBase]: For 36551/36569 co-relation queries the response was YES. [2023-11-29 00:43:07,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9243 conditions, 1635 events. 877/1635 cut-off events. For 36551/36569 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7944 event pairs, 68 based on Foata normal form. 90/1724 useless extension candidates. Maximal degree in co-relation 9200. Up to 312 conditions per place. [2023-11-29 00:43:07,817 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 88 selfloop transitions, 47 changer transitions 80/221 dead transitions. [2023-11-29 00:43:07,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 221 transitions, 2813 flow [2023-11-29 00:43:07,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 00:43:07,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-29 00:43:07,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 550 transitions. [2023-11-29 00:43:07,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.582010582010582 [2023-11-29 00:43:07,820 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 550 transitions. [2023-11-29 00:43:07,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 550 transitions. [2023-11-29 00:43:07,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:07,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 550 transitions. [2023-11-29 00:43:07,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 20.37037037037037) internal successors, (550), 27 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:07,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 35.0) internal successors, (980), 28 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:07,826 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 35.0) internal successors, (980), 28 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:07,826 INFO L175 Difference]: Start difference. First operand has 97 places, 57 transitions, 611 flow. Second operand 27 states and 550 transitions. [2023-11-29 00:43:07,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 221 transitions, 2813 flow [2023-11-29 00:43:07,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 221 transitions, 2269 flow, removed 261 selfloop flow, removed 12 redundant places. [2023-11-29 00:43:07,870 INFO L231 Difference]: Finished difference. Result has 123 places, 73 transitions, 1014 flow [2023-11-29 00:43:07,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1014, PETRI_PLACES=123, PETRI_TRANSITIONS=73} [2023-11-29 00:43:07,871 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 87 predicate places. [2023-11-29 00:43:07,871 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 73 transitions, 1014 flow [2023-11-29 00:43:07,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:07,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:07,872 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:07,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 00:43:08,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:08,076 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:08,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:08,077 INFO L85 PathProgramCache]: Analyzing trace with hash -842807811, now seen corresponding path program 1 times [2023-11-29 00:43:08,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:08,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191206381] [2023-11-29 00:43:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:08,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:08,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191206381] [2023-11-29 00:43:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191206381] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:43:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584792868] [2023-11-29 00:43:08,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:08,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:08,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:08,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:08,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:43:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:08,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:43:08,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:08,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:08,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:08,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584792868] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:08,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:43:08,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-11-29 00:43:08,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126699272] [2023-11-29 00:43:08,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:08,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:43:08,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:08,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:43:08,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:43:08,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:08,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 73 transitions, 1014 flow. Second operand has 15 states, 15 states have (on average 15.133333333333333) internal successors, (227), 15 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:08,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:08,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:08,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:09,347 INFO L124 PetriNetUnfolderBase]: 1111/2104 cut-off events. [2023-11-29 00:43:09,347 INFO L125 PetriNetUnfolderBase]: For 86450/86456 co-relation queries the response was YES. [2023-11-29 00:43:09,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14615 conditions, 2104 events. 1111/2104 cut-off events. For 86450/86456 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11023 event pairs, 153 based on Foata normal form. 69/2170 useless extension candidates. Maximal degree in co-relation 14560. Up to 490 conditions per place. [2023-11-29 00:43:09,370 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 99 selfloop transitions, 51 changer transitions 67/223 dead transitions. [2023-11-29 00:43:09,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 223 transitions, 3626 flow [2023-11-29 00:43:09,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 00:43:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 00:43:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 509 transitions. [2023-11-29 00:43:09,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5817142857142857 [2023-11-29 00:43:09,418 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 509 transitions. [2023-11-29 00:43:09,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 509 transitions. [2023-11-29 00:43:09,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:09,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 509 transitions. [2023-11-29 00:43:09,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 20.36) internal successors, (509), 25 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:09,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 35.0) internal successors, (910), 26 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:09,423 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 35.0) internal successors, (910), 26 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:09,423 INFO L175 Difference]: Start difference. First operand has 123 places, 73 transitions, 1014 flow. Second operand 25 states and 509 transitions. [2023-11-29 00:43:09,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 223 transitions, 3626 flow [2023-11-29 00:43:09,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 223 transitions, 3046 flow, removed 274 selfloop flow, removed 15 redundant places. [2023-11-29 00:43:09,540 INFO L231 Difference]: Finished difference. Result has 139 places, 84 transitions, 1300 flow [2023-11-29 00:43:09,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1300, PETRI_PLACES=139, PETRI_TRANSITIONS=84} [2023-11-29 00:43:09,541 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 103 predicate places. [2023-11-29 00:43:09,541 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 84 transitions, 1300 flow [2023-11-29 00:43:09,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.133333333333333) internal successors, (227), 15 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:09,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:09,542 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:09,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:43:09,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 00:43:09,742 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:09,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:09,743 INFO L85 PathProgramCache]: Analyzing trace with hash 329646449, now seen corresponding path program 2 times [2023-11-29 00:43:09,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:09,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749140031] [2023-11-29 00:43:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:09,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:09,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749140031] [2023-11-29 00:43:09,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749140031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:43:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190257811] [2023-11-29 00:43:09,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:43:09,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:09,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:09,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:09,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:43:09,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:43:09,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:09,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:43:09,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:09,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:10,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190257811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:10,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:43:10,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-29 00:43:10,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873366547] [2023-11-29 00:43:10,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:10,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:43:10,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:10,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:43:10,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:43:10,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:10,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 84 transitions, 1300 flow. Second operand has 16 states, 16 states have (on average 15.0625) internal successors, (241), 16 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:10,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:10,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:10,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:11,137 INFO L124 PetriNetUnfolderBase]: 1192/2279 cut-off events. [2023-11-29 00:43:11,138 INFO L125 PetriNetUnfolderBase]: For 130360/130366 co-relation queries the response was YES. [2023-11-29 00:43:11,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16888 conditions, 2279 events. 1192/2279 cut-off events. For 130360/130366 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11984 event pairs, 65 based on Foata normal form. 132/2408 useless extension candidates. Maximal degree in co-relation 16826. Up to 480 conditions per place. [2023-11-29 00:43:11,172 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 86 selfloop transitions, 74 changer transitions 89/255 dead transitions. [2023-11-29 00:43:11,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 255 transitions, 4848 flow [2023-11-29 00:43:11,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 00:43:11,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 00:43:11,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 529 transitions. [2023-11-29 00:43:11,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813186813186814 [2023-11-29 00:43:11,175 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 529 transitions. [2023-11-29 00:43:11,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 529 transitions. [2023-11-29 00:43:11,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:11,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 529 transitions. [2023-11-29 00:43:11,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 20.346153846153847) internal successors, (529), 26 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:11,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 35.0) internal successors, (945), 27 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:11,180 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 35.0) internal successors, (945), 27 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:11,180 INFO L175 Difference]: Start difference. First operand has 139 places, 84 transitions, 1300 flow. Second operand 26 states and 529 transitions. [2023-11-29 00:43:11,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 255 transitions, 4848 flow [2023-11-29 00:43:11,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 255 transitions, 4109 flow, removed 336 selfloop flow, removed 18 redundant places. [2023-11-29 00:43:11,421 INFO L231 Difference]: Finished difference. Result has 156 places, 103 transitions, 1857 flow [2023-11-29 00:43:11,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1857, PETRI_PLACES=156, PETRI_TRANSITIONS=103} [2023-11-29 00:43:11,422 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 120 predicate places. [2023-11-29 00:43:11,422 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 103 transitions, 1857 flow [2023-11-29 00:43:11,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.0625) internal successors, (241), 16 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:11,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:11,423 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:11,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:43:11,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 00:43:11,628 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:11,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:11,629 INFO L85 PathProgramCache]: Analyzing trace with hash 892975757, now seen corresponding path program 3 times [2023-11-29 00:43:11,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:11,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398795112] [2023-11-29 00:43:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:11,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:11,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:11,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398795112] [2023-11-29 00:43:11,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398795112] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:43:11,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516567483] [2023-11-29 00:43:11,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:43:11,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:11,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:11,795 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:11,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:43:11,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 00:43:11,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:11,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:43:11,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:11,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:12,115 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:12,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516567483] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:12,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:43:12,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2023-11-29 00:43:12,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419599463] [2023-11-29 00:43:12,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:12,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:43:12,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:12,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:43:12,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:43:12,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:12,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 103 transitions, 1857 flow. Second operand has 23 states, 23 states have (on average 15.08695652173913) internal successors, (347), 23 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:12,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:12,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:12,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:13,651 INFO L124 PetriNetUnfolderBase]: 1678/3104 cut-off events. [2023-11-29 00:43:13,651 INFO L125 PetriNetUnfolderBase]: For 240020/240026 co-relation queries the response was YES. [2023-11-29 00:43:13,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26427 conditions, 3104 events. 1678/3104 cut-off events. For 240020/240026 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 15425 event pairs, 40 based on Foata normal form. 96/3199 useless extension candidates. Maximal degree in co-relation 26357. Up to 666 conditions per place. [2023-11-29 00:43:13,680 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 142 selfloop transitions, 110 changer transitions 135/393 dead transitions. [2023-11-29 00:43:13,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 393 transitions, 8137 flow [2023-11-29 00:43:13,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 00:43:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-11-29 00:43:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 933 transitions. [2023-11-29 00:43:13,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5795031055900621 [2023-11-29 00:43:13,684 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 933 transitions. [2023-11-29 00:43:13,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 933 transitions. [2023-11-29 00:43:13,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:13,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 933 transitions. [2023-11-29 00:43:13,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 20.282608695652176) internal successors, (933), 46 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:13,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 35.0) internal successors, (1645), 47 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:13,692 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 35.0) internal successors, (1645), 47 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:13,692 INFO L175 Difference]: Start difference. First operand has 156 places, 103 transitions, 1857 flow. Second operand 46 states and 933 transitions. [2023-11-29 00:43:13,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 393 transitions, 8137 flow [2023-11-29 00:43:13,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 393 transitions, 6948 flow, removed 568 selfloop flow, removed 17 redundant places. [2023-11-29 00:43:13,922 INFO L231 Difference]: Finished difference. Result has 205 places, 137 transitions, 2976 flow [2023-11-29 00:43:13,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2976, PETRI_PLACES=205, PETRI_TRANSITIONS=137} [2023-11-29 00:43:13,923 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 169 predicate places. [2023-11-29 00:43:13,923 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 137 transitions, 2976 flow [2023-11-29 00:43:13,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 15.08695652173913) internal successors, (347), 23 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:13,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:13,923 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:13,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:43:14,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:14,124 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:14,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:14,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2026364294, now seen corresponding path program 4 times [2023-11-29 00:43:14,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:14,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644371525] [2023-11-29 00:43:14,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:14,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:14,472 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:14,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:14,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644371525] [2023-11-29 00:43:14,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644371525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:43:14,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998835489] [2023-11-29 00:43:14,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:43:14,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:14,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:14,474 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:14,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:43:14,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:43:14,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:14,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:43:14,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:14,711 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:14,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:15,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998835489] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:15,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:43:15,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2023-11-29 00:43:15,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178913726] [2023-11-29 00:43:15,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:15,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 00:43:15,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:15,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 00:43:15,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 00:43:15,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:15,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 137 transitions, 2976 flow. Second operand has 35 states, 35 states have (on average 15.057142857142857) internal successors, (527), 35 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:15,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:15,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:15,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:17,290 INFO L124 PetriNetUnfolderBase]: 2182/4195 cut-off events. [2023-11-29 00:43:17,291 INFO L125 PetriNetUnfolderBase]: For 567152/567158 co-relation queries the response was YES. [2023-11-29 00:43:17,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44730 conditions, 4195 events. 2182/4195 cut-off events. For 567152/567158 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 21758 event pairs, 409 based on Foata normal form. 159/4351 useless extension candidates. Maximal degree in co-relation 44641. Up to 1447 conditions per place. [2023-11-29 00:43:17,332 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 188 selfloop transitions, 99 changer transitions 189/482 dead transitions. [2023-11-29 00:43:17,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 482 transitions, 13585 flow [2023-11-29 00:43:17,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-29 00:43:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-11-29 00:43:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 1093 transitions. [2023-11-29 00:43:17,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677922077922077 [2023-11-29 00:43:17,335 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 1093 transitions. [2023-11-29 00:43:17,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 1093 transitions. [2023-11-29 00:43:17,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:17,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 1093 transitions. [2023-11-29 00:43:17,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 19.87272727272727) internal successors, (1093), 55 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:17,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 35.0) internal successors, (1960), 56 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:17,343 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 35.0) internal successors, (1960), 56 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:17,343 INFO L175 Difference]: Start difference. First operand has 205 places, 137 transitions, 2976 flow. Second operand 55 states and 1093 transitions. [2023-11-29 00:43:17,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 482 transitions, 13585 flow [2023-11-29 00:43:18,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 482 transitions, 9924 flow, removed 1791 selfloop flow, removed 29 redundant places. [2023-11-29 00:43:18,153 INFO L231 Difference]: Finished difference. Result has 253 places, 179 transitions, 3879 flow [2023-11-29 00:43:18,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=3879, PETRI_PLACES=253, PETRI_TRANSITIONS=179} [2023-11-29 00:43:18,154 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 217 predicate places. [2023-11-29 00:43:18,154 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 179 transitions, 3879 flow [2023-11-29 00:43:18,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 15.057142857142857) internal successors, (527), 35 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:18,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:18,155 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:18,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:43:18,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 00:43:18,355 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:18,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1175136872, now seen corresponding path program 5 times [2023-11-29 00:43:18,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:18,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743642987] [2023-11-29 00:43:18,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:18,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:18,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:18,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743642987] [2023-11-29 00:43:18,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743642987] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:43:18,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244770277] [2023-11-29 00:43:18,668 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:43:18,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:18,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:18,669 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:18,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:43:18,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-11-29 00:43:18,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:18,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:43:18,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:18,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:19,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244770277] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:19,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:43:19,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2023-11-29 00:43:19,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745517770] [2023-11-29 00:43:19,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:19,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 00:43:19,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:19,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 00:43:19,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 00:43:19,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:19,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 179 transitions, 3879 flow. Second operand has 36 states, 36 states have (on average 15.083333333333334) internal successors, (543), 36 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:19,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:19,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:19,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:22,054 INFO L124 PetriNetUnfolderBase]: 2731/5442 cut-off events. [2023-11-29 00:43:22,054 INFO L125 PetriNetUnfolderBase]: For 953992/953998 co-relation queries the response was YES. [2023-11-29 00:43:22,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60307 conditions, 5442 events. 2731/5442 cut-off events. For 953992/953998 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 30669 event pairs, 194 based on Foata normal form. 159/5600 useless extension candidates. Maximal degree in co-relation 60203. Up to 1368 conditions per place. [2023-11-29 00:43:22,116 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 180 selfloop transitions, 189 changer transitions 201/576 dead transitions. [2023-11-29 00:43:22,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 576 transitions, 16341 flow [2023-11-29 00:43:22,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 00:43:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-11-29 00:43:22,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1218 transitions. [2023-11-29 00:43:22,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5704918032786885 [2023-11-29 00:43:22,120 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 1218 transitions. [2023-11-29 00:43:22,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 1218 transitions. [2023-11-29 00:43:22,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:22,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 1218 transitions. [2023-11-29 00:43:22,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 19.9672131147541) internal successors, (1218), 61 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:22,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 35.0) internal successors, (2170), 62 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:22,129 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 35.0) internal successors, (2170), 62 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:22,129 INFO L175 Difference]: Start difference. First operand has 253 places, 179 transitions, 3879 flow. Second operand 61 states and 1218 transitions. [2023-11-29 00:43:22,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 576 transitions, 16341 flow [2023-11-29 00:43:24,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 576 transitions, 13835 flow, removed 1218 selfloop flow, removed 31 redundant places. [2023-11-29 00:43:24,224 INFO L231 Difference]: Finished difference. Result has 301 places, 240 transitions, 5902 flow [2023-11-29 00:43:24,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=5902, PETRI_PLACES=301, PETRI_TRANSITIONS=240} [2023-11-29 00:43:24,225 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 265 predicate places. [2023-11-29 00:43:24,225 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 240 transitions, 5902 flow [2023-11-29 00:43:24,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 15.083333333333334) internal successors, (543), 36 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:24,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:24,226 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:24,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 00:43:24,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 00:43:24,426 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:24,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:24,427 INFO L85 PathProgramCache]: Analyzing trace with hash -2124637942, now seen corresponding path program 6 times [2023-11-29 00:43:24,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:24,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92468152] [2023-11-29 00:43:24,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:24,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:24,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:24,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92468152] [2023-11-29 00:43:24,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92468152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:43:24,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090309135] [2023-11-29 00:43:24,823 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:43:24,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:24,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:24,824 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:24,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:43:24,920 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-11-29 00:43:24,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:24,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 00:43:24,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:25,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:25,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090309135] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:25,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:43:25,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2023-11-29 00:43:25,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728581558] [2023-11-29 00:43:25,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:25,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 00:43:25,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:25,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 00:43:25,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 00:43:25,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:25,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 240 transitions, 5902 flow. Second operand has 35 states, 35 states have (on average 15.057142857142857) internal successors, (527), 35 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:25,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:25,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:25,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:29,340 INFO L124 PetriNetUnfolderBase]: 3658/7235 cut-off events. [2023-11-29 00:43:29,340 INFO L125 PetriNetUnfolderBase]: For 1891967/1891973 co-relation queries the response was YES. [2023-11-29 00:43:29,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94228 conditions, 7235 events. 3658/7235 cut-off events. For 1891967/1891973 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 42144 event pairs, 83 based on Foata normal form. 159/7391 useless extension candidates. Maximal degree in co-relation 94106. Up to 1815 conditions per place. [2023-11-29 00:43:29,439 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 226 selfloop transitions, 270 changer transitions 205/707 dead transitions. [2023-11-29 00:43:29,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 707 transitions, 23402 flow [2023-11-29 00:43:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-29 00:43:29,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-11-29 00:43:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 1436 transitions. [2023-11-29 00:43:29,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577867203219316 [2023-11-29 00:43:29,442 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 1436 transitions. [2023-11-29 00:43:29,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 1436 transitions. [2023-11-29 00:43:29,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:29,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 1436 transitions. [2023-11-29 00:43:29,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 20.225352112676056) internal successors, (1436), 71 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:29,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 35.0) internal successors, (2520), 72 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:29,454 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 35.0) internal successors, (2520), 72 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:29,454 INFO L175 Difference]: Start difference. First operand has 301 places, 240 transitions, 5902 flow. Second operand 71 states and 1436 transitions. [2023-11-29 00:43:29,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 707 transitions, 23402 flow [2023-11-29 00:43:32,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 707 transitions, 19554 flow, removed 1870 selfloop flow, removed 32 redundant places. [2023-11-29 00:43:32,863 INFO L231 Difference]: Finished difference. Result has 364 places, 301 transitions, 8386 flow [2023-11-29 00:43:32,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4444, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=8386, PETRI_PLACES=364, PETRI_TRANSITIONS=301} [2023-11-29 00:43:32,864 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 328 predicate places. [2023-11-29 00:43:32,864 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 301 transitions, 8386 flow [2023-11-29 00:43:32,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 15.057142857142857) internal successors, (527), 35 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:32,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:32,865 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:32,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 00:43:33,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:33,065 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:33,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash -385385990, now seen corresponding path program 7 times [2023-11-29 00:43:33,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:33,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15576344] [2023-11-29 00:43:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:33,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:33,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:33,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15576344] [2023-11-29 00:43:33,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15576344] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:43:33,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547350409] [2023-11-29 00:43:33,451 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:43:33,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:33,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:33,453 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:33,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:43:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:33,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 00:43:33,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:33,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:34,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547350409] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:34,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:43:34,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2023-11-29 00:43:34,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503352636] [2023-11-29 00:43:34,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:34,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 00:43:34,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:34,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 00:43:34,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1519, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 00:43:34,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:34,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 301 transitions, 8386 flow. Second operand has 45 states, 45 states have (on average 15.044444444444444) internal successors, (677), 45 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:34,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:34,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:34,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:41,254 INFO L124 PetriNetUnfolderBase]: 5413/10656 cut-off events. [2023-11-29 00:43:41,254 INFO L125 PetriNetUnfolderBase]: For 4378206/4378212 co-relation queries the response was YES. [2023-11-29 00:43:41,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168065 conditions, 10656 events. 5413/10656 cut-off events. For 4378206/4378212 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 63650 event pairs, 66 based on Foata normal form. 393/11048 useless extension candidates. Maximal degree in co-relation 167918. Up to 2715 conditions per place. [2023-11-29 00:43:41,393 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 313 selfloop transitions, 399 changer transitions 341/1059 dead transitions. [2023-11-29 00:43:41,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 1059 transitions, 44565 flow [2023-11-29 00:43:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-11-29 00:43:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2023-11-29 00:43:41,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 2124 transitions. [2023-11-29 00:43:41,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5779591836734694 [2023-11-29 00:43:41,397 INFO L72 ComplementDD]: Start complementDD. Operand 105 states and 2124 transitions. [2023-11-29 00:43:41,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 2124 transitions. [2023-11-29 00:43:41,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:41,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 105 states and 2124 transitions. [2023-11-29 00:43:41,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 106 states, 105 states have (on average 20.228571428571428) internal successors, (2124), 105 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:41,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 106 states, 106 states have (on average 35.0) internal successors, (3710), 106 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:41,411 INFO L81 ComplementDD]: Finished complementDD. Result has 106 states, 106 states have (on average 35.0) internal successors, (3710), 106 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:41,411 INFO L175 Difference]: Start difference. First operand has 364 places, 301 transitions, 8386 flow. Second operand 105 states and 2124 transitions. [2023-11-29 00:43:41,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 1059 transitions, 44565 flow [2023-11-29 00:43:48,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 1059 transitions, 34319 flow, removed 5032 selfloop flow, removed 36 redundant places. [2023-11-29 00:43:48,824 INFO L231 Difference]: Finished difference. Result has 479 places, 432 transitions, 13835 flow [2023-11-29 00:43:48,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6014, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=105, PETRI_FLOW=13835, PETRI_PLACES=479, PETRI_TRANSITIONS=432} [2023-11-29 00:43:48,824 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 443 predicate places. [2023-11-29 00:43:48,825 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 432 transitions, 13835 flow [2023-11-29 00:43:48,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 15.044444444444444) internal successors, (677), 45 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:48,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:48,825 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:48,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:43:49,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:49,026 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:43:49,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:49,027 INFO L85 PathProgramCache]: Analyzing trace with hash 86828128, now seen corresponding path program 8 times [2023-11-29 00:43:49,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:49,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82252342] [2023-11-29 00:43:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:49,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 885 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:43:50,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:50,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82252342] [2023-11-29 00:43:50,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82252342] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:43:50,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916833855] [2023-11-29 00:43:50,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:43:50,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:50,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:50,107 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:50,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:43:50,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:43:50,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:50,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 00:43:50,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 885 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:43:50,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 885 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:43:50,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916833855] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:50,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:43:50,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 46 [2023-11-29 00:43:50,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055936633] [2023-11-29 00:43:50,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:50,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 00:43:50,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:50,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 00:43:50,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=1695, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 00:43:50,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:43:50,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 432 transitions, 13835 flow. Second operand has 47 states, 47 states have (on average 15.170212765957446) internal successors, (713), 47 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:50,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:50,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:43:50,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:01,023 INFO L124 PetriNetUnfolderBase]: 7492/14348 cut-off events. [2023-11-29 00:44:01,023 INFO L125 PetriNetUnfolderBase]: For 8281784/8281790 co-relation queries the response was YES. [2023-11-29 00:44:01,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247702 conditions, 14348 events. 7492/14348 cut-off events. For 8281784/8281790 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 86168 event pairs, 38 based on Foata normal form. 60/14407 useless extension candidates. Maximal degree in co-relation 247509. Up to 3396 conditions per place. [2023-11-29 00:44:01,288 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 315 selfloop transitions, 576 changer transitions 199/1096 dead transitions. [2023-11-29 00:44:01,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 1096 transitions, 49808 flow [2023-11-29 00:44:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-11-29 00:44:01,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-11-29 00:44:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1769 transitions. [2023-11-29 00:44:01,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5743506493506494 [2023-11-29 00:44:01,292 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 1769 transitions. [2023-11-29 00:44:01,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 1769 transitions. [2023-11-29 00:44:01,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:01,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 1769 transitions. [2023-11-29 00:44:01,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 20.102272727272727) internal successors, (1769), 88 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:01,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 35.0) internal successors, (3115), 89 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:01,302 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 35.0) internal successors, (3115), 89 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:01,302 INFO L175 Difference]: Start difference. First operand has 479 places, 432 transitions, 13835 flow. Second operand 88 states and 1769 transitions. [2023-11-29 00:44:01,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 1096 transitions, 49808 flow [2023-11-29 00:44:28,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 1096 transitions, 32078 flow, removed 8674 selfloop flow, removed 57 redundant places. [2023-11-29 00:44:28,719 INFO L231 Difference]: Finished difference. Result has 506 places, 613 transitions, 15265 flow [2023-11-29 00:44:28,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8905, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=15265, PETRI_PLACES=506, PETRI_TRANSITIONS=613} [2023-11-29 00:44:28,721 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 470 predicate places. [2023-11-29 00:44:28,721 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 613 transitions, 15265 flow [2023-11-29 00:44:28,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 15.170212765957446) internal successors, (713), 47 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:28,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:28,721 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:28,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:44:28,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:44:28,922 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:28,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:28,922 INFO L85 PathProgramCache]: Analyzing trace with hash -350097129, now seen corresponding path program 9 times [2023-11-29 00:44:28,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:28,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396604520] [2023-11-29 00:44:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:28,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:44:28,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:44:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:44:29,032 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:44:29,032 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:44:29,034 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-29 00:44:29,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-29 00:44:29,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-29 00:44:29,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-29 00:44:29,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-29 00:44:29,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-29 00:44:29,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-29 00:44:29,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-29 00:44:29,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 00:44:29,037 INFO L445 BasicCegarLoop]: Path program histogram: [9, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:29,042 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 00:44:29,042 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:44:29,124 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-29 00:44:29,125 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-29 00:44:29,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:44:29 BasicIcfg [2023-11-29 00:44:29,164 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:44:29,164 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:44:29,165 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:44:29,165 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:44:29,165 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:43:01" (3/4) ... [2023-11-29 00:44:29,167 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 00:44:29,168 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:44:29,169 INFO L158 Benchmark]: Toolchain (without parser) took 88636.99ms. Allocated memory was 127.9MB in the beginning and 3.8GB in the end (delta: 3.7GB). Free memory was 74.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2023-11-29 00:44:29,169 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:44:29,169 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.48ms. Allocated memory was 127.9MB in the beginning and 169.9MB in the end (delta: 41.9MB). Free memory was 74.3MB in the beginning and 129.3MB in the end (delta: -55.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 00:44:29,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.34ms. Allocated memory is still 169.9MB. Free memory was 129.3MB in the beginning and 127.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:44:29,170 INFO L158 Benchmark]: Boogie Preprocessor took 41.91ms. Allocated memory is still 169.9MB. Free memory was 127.7MB in the beginning and 125.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:44:29,170 INFO L158 Benchmark]: RCFGBuilder took 439.32ms. Allocated memory is still 169.9MB. Free memory was 125.1MB in the beginning and 104.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 00:44:29,170 INFO L158 Benchmark]: TraceAbstraction took 87668.36ms. Allocated memory was 169.9MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 103.5MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2023-11-29 00:44:29,171 INFO L158 Benchmark]: Witness Printer took 3.57ms. Allocated memory is still 3.8GB. Free memory is still 1.8GB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:44:29,172 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 437.48ms. Allocated memory was 127.9MB in the beginning and 169.9MB in the end (delta: 41.9MB). Free memory was 74.3MB in the beginning and 129.3MB in the end (delta: -55.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.34ms. Allocated memory is still 169.9MB. Free memory was 129.3MB in the beginning and 127.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.91ms. Allocated memory is still 169.9MB. Free memory was 127.7MB in the beginning and 125.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 439.32ms. Allocated memory is still 169.9MB. Free memory was 125.1MB in the beginning and 104.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 87668.36ms. Allocated memory was 169.9MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 103.5MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. * Witness Printer took 3.57ms. Allocated memory is still 3.8GB. Free memory is still 1.8GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=9] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=10] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=10] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=11] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=11] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=11, k=12] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=12] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=12, k=13] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=13] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=13] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=13, k=14] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=13, k=14] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=14] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=15] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=15] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=15] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=16] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=16] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=16] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=17] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=17] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=17, k=18] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=18] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L696] COND TRUE 1 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=19] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, condI=0, i=43, id1={5:0}, id2={3:0}, j=44, k=19, k=19] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=19] [L704] COND TRUE 2 k < 20 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=19] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L719] 0 int condJ = j >= (2*20 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, condI=0, condJ=1, i=45, id1={5:0}, id2={3:0}, j=46, k=19, k=19] [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L693] 0 __assert_fail ("0", "triangular-longest-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 44 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 87.5s, OverallIterations: 22, TraceHistogramMax: 20, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 75.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7723 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7649 mSDsluCounter, 110 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 85 mSDsCounter, 415 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7757 IncrementalHoareTripleChecker+Invalid, 8172 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 415 mSolverCounterUnsat, 25 mSDtfsCounter, 7757 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1627 GetRequests, 809 SyntacticMatches, 31 SemanticMatches, 787 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22296 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15265occurred in iteration=21, InterpolantAutomatonStates: 595, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 1208 NumberOfCodeBlocks, 1208 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 1512 ConstructedInterpolants, 0 QuantifiedInterpolants, 6099 SizeOfPredicates, 128 NumberOfNonLiveVariables, 1695 ConjunctsInSsa, 186 ConjunctsInUnsatCore, 41 InterpolantComputations, 11 PerfectInterpolantSequences, 6/4491 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 00:44:29,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:44:31,264 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:44:31,339 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 00:44:31,345 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:44:31,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:44:31,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:44:31,376 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:44:31,376 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:44:31,377 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:44:31,377 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:44:31,378 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:44:31,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:44:31,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:44:31,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:44:31,381 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:44:31,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:44:31,382 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:44:31,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:44:31,383 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:44:31,383 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:44:31,384 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:44:31,385 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:44:31,385 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:44:31,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:44:31,386 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:44:31,386 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:44:31,387 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:44:31,387 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:44:31,388 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:44:31,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:44:31,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:44:31,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:44:31,389 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:44:31,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:44:31,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:44:31,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:44:31,390 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:44:31,391 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:44:31,391 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:44:31,391 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:44:31,391 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:44:31,391 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:44:31,392 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:44:31,392 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:44:31,392 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2023-11-29 00:44:31,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:44:31,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:44:31,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:44:31,732 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:44:31,732 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:44:31,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2023-11-29 00:44:34,557 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:44:34,778 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:44:34,778 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/sv-benchmarks/c/pthread/triangular-longest-2.i [2023-11-29 00:44:34,794 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/data/ad4b96e7d/04f9dbaff1ea48ed9f1d2bbf72509cb6/FLAG4ac0c89d5 [2023-11-29 00:44:34,809 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/data/ad4b96e7d/04f9dbaff1ea48ed9f1d2bbf72509cb6 [2023-11-29 00:44:34,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:44:34,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:44:34,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:44:34,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:44:34,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:44:34,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:44:34" (1/1) ... [2023-11-29 00:44:34,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739958ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:34, skipping insertion in model container [2023-11-29 00:44:34,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:44:34" (1/1) ... [2023-11-29 00:44:34,889 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:44:35,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:44:35,207 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:44:35,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:44:35,290 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:44:35,290 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:44:35,298 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:44:35,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35 WrapperNode [2023-11-29 00:44:35,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:44:35,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:44:35,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:44:35,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:44:35,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35" (1/1) ... [2023-11-29 00:44:35,325 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35" (1/1) ... [2023-11-29 00:44:35,346 INFO L138 Inliner]: procedures = 172, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-11-29 00:44:35,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:44:35,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:44:35,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:44:35,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:44:35,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35" (1/1) ... [2023-11-29 00:44:35,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35" (1/1) ... [2023-11-29 00:44:35,362 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35" (1/1) ... [2023-11-29 00:44:35,377 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 00:44:35,377 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35" (1/1) ... [2023-11-29 00:44:35,377 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35" (1/1) ... [2023-11-29 00:44:35,387 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35" (1/1) ... [2023-11-29 00:44:35,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35" (1/1) ... [2023-11-29 00:44:35,393 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35" (1/1) ... [2023-11-29 00:44:35,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35" (1/1) ... [2023-11-29 00:44:35,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:44:35,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:44:35,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:44:35,400 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:44:35,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35" (1/1) ... [2023-11-29 00:44:35,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:44:35,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:44:35,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:44:35,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:44:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 00:44:35,507 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 00:44:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 00:44:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 00:44:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 00:44:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:44:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:44:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:44:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 00:44:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 00:44:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 00:44:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:44:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 00:44:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 00:44:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 00:44:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:44:35,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:44:35,512 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:44:35,658 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:44:35,660 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:44:35,839 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:44:35,964 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:44:35,964 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:44:35,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:44:35 BoogieIcfgContainer [2023-11-29 00:44:35,965 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:44:35,966 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:44:35,966 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:44:35,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:44:35,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:44:34" (1/3) ... [2023-11-29 00:44:35,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21da292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:44:35, skipping insertion in model container [2023-11-29 00:44:35,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:35" (2/3) ... [2023-11-29 00:44:35,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21da292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:44:35, skipping insertion in model container [2023-11-29 00:44:35,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:44:35" (3/3) ... [2023-11-29 00:44:35,972 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-11-29 00:44:35,986 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:44:35,986 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 00:44:35,986 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:44:36,024 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:44:36,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 78 flow [2023-11-29 00:44:36,081 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-11-29 00:44:36,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:44:36,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-29 00:44:36,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 78 flow [2023-11-29 00:44:36,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 33 transitions, 72 flow [2023-11-29 00:44:36,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:44:36,106 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@b03a7f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:44:36,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-29 00:44:36,110 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:44:36,110 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 00:44:36,110 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:44:36,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:36,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:44:36,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:36,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:36,117 INFO L85 PathProgramCache]: Analyzing trace with hash 6801, now seen corresponding path program 1 times [2023-11-29 00:44:36,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:36,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434317340] [2023-11-29 00:44:36,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:36,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:36,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:36,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:36,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 00:44:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:36,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:44:36,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:36,300 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:44:36,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 00:44:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:36,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:36,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:36,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434317340] [2023-11-29 00:44:36,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434317340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:36,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:36,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:44:36,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314229231] [2023-11-29 00:44:36,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:36,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:36,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:36,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:36,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:36,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-29 00:44:36,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:36,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:36,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-29 00:44:36,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:36,570 INFO L124 PetriNetUnfolderBase]: 88/193 cut-off events. [2023-11-29 00:44:36,570 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 00:44:36,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 193 events. 88/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 711 event pairs, 32 based on Foata normal form. 15/191 useless extension candidates. Maximal degree in co-relation 333. Up to 87 conditions per place. [2023-11-29 00:44:36,575 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 18 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-11-29 00:44:36,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 118 flow [2023-11-29 00:44:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:44:36,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-29 00:44:36,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-29 00:44:36,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-29 00:44:36,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-29 00:44:36,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:36,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-29 00:44:36,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:36,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:36,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:36,601 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 72 flow. Second operand 3 states and 72 transitions. [2023-11-29 00:44:36,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 118 flow [2023-11-29 00:44:36,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:36,606 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2023-11-29 00:44:36,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-29 00:44:36,611 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-29 00:44:36,612 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2023-11-29 00:44:36,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:36,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:36,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:44:36,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:44:36,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:36,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:36,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash 6802, now seen corresponding path program 1 times [2023-11-29 00:44:36,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:36,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943827300] [2023-11-29 00:44:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:36,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:36,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:36,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:36,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 00:44:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:36,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:44:36,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:36,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:44:36,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 00:44:36,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 00:44:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:36,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:36,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:36,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943827300] [2023-11-29 00:44:36,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943827300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:36,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:36,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:44:36,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654126749] [2023-11-29 00:44:36,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:36,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:36,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:36,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:36,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:36,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 00:44:36,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:36,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:36,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 00:44:36,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:37,064 INFO L124 PetriNetUnfolderBase]: 70/165 cut-off events. [2023-11-29 00:44:37,065 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 00:44:37,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 165 events. 70/165 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 624 event pairs, 32 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 288. Up to 86 conditions per place. [2023-11-29 00:44:37,067 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-29 00:44:37,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 112 flow [2023-11-29 00:44:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:37,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:44:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-29 00:44:37,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-29 00:44:37,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-29 00:44:37,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-29 00:44:37,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:37,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-29 00:44:37,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,074 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 71 transitions. [2023-11-29 00:44:37,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 112 flow [2023-11-29 00:44:37,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:37,076 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 62 flow [2023-11-29 00:44:37,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-29 00:44:37,077 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-29 00:44:37,078 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 62 flow [2023-11-29 00:44:37,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:37,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:44:37,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 00:44:37,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:37,279 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:37,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:37,280 INFO L85 PathProgramCache]: Analyzing trace with hash 202776937, now seen corresponding path program 1 times [2023-11-29 00:44:37,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:37,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286620879] [2023-11-29 00:44:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:37,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:37,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:37,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:37,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 00:44:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:37,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:44:37,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:37,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:44:37,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:44:37,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:44:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:37,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:37,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:37,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286620879] [2023-11-29 00:44:37,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286620879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:37,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:37,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:44:37,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499709303] [2023-11-29 00:44:37,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:37,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:37,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:37,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:37,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:37,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 00:44:37,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:37,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 00:44:37,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:37,495 INFO L124 PetriNetUnfolderBase]: 70/164 cut-off events. [2023-11-29 00:44:37,496 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 00:44:37,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 164 events. 70/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 618 event pairs, 32 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 287. Up to 86 conditions per place. [2023-11-29 00:44:37,498 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-29 00:44:37,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 110 flow [2023-11-29 00:44:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:44:37,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-29 00:44:37,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-29 00:44:37,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-29 00:44:37,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-29 00:44:37,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:37,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-29 00:44:37,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,503 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 62 flow. Second operand 3 states and 71 transitions. [2023-11-29 00:44:37,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 110 flow [2023-11-29 00:44:37,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:37,505 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 60 flow [2023-11-29 00:44:37,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-29 00:44:37,506 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-29 00:44:37,506 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 60 flow [2023-11-29 00:44:37,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:37,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:44:37,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 00:44:37,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:37,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:37,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash 202776936, now seen corresponding path program 1 times [2023-11-29 00:44:37,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:37,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242759343] [2023-11-29 00:44:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:37,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:37,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:37,737 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:37,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 00:44:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:37,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:44:37,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:37,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:44:37,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:44:37,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:44:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:37,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:37,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:37,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242759343] [2023-11-29 00:44:37,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242759343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:37,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:37,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:44:37,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793063848] [2023-11-29 00:44:37,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:37,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:37,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:37,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-29 00:44:37,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:37,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-29 00:44:37,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:37,913 INFO L124 PetriNetUnfolderBase]: 73/166 cut-off events. [2023-11-29 00:44:37,913 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 00:44:37,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 166 events. 73/166 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 600 event pairs, 34 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 295. Up to 92 conditions per place. [2023-11-29 00:44:37,915 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-29 00:44:37,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 110 flow [2023-11-29 00:44:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:37,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:44:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-29 00:44:37,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2023-11-29 00:44:37,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-29 00:44:37,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-29 00:44:37,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:37,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-29 00:44:37,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,920 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 60 flow. Second operand 3 states and 69 transitions. [2023-11-29 00:44:37,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 110 flow [2023-11-29 00:44:37,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:37,922 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 58 flow [2023-11-29 00:44:37,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-29 00:44:37,923 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-29 00:44:37,923 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 58 flow [2023-11-29 00:44:37,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:37,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:37,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:37,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 00:44:38,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:38,125 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:38,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash 665434620, now seen corresponding path program 1 times [2023-11-29 00:44:38,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:38,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262225329] [2023-11-29 00:44:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:38,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:38,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:38,126 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:38,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 00:44:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:38,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:44:38,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:38,402 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ bv0 1))))) is different from true [2023-11-29 00:44:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:38,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:38,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:38,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262225329] [2023-11-29 00:44:38,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262225329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:38,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:38,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:38,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121113428] [2023-11-29 00:44:38,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:38,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:38,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:38,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:38,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:44:38,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:44:38,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:38,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:38,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:44:38,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:38,494 INFO L124 PetriNetUnfolderBase]: 97/205 cut-off events. [2023-11-29 00:44:38,494 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 00:44:38,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 205 events. 97/205 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 750 event pairs, 34 based on Foata normal form. 9/196 useless extension candidates. Maximal degree in co-relation 374. Up to 93 conditions per place. [2023-11-29 00:44:38,497 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 20 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2023-11-29 00:44:38,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 138 flow [2023-11-29 00:44:38,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:44:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:44:38,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:44:38,499 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:44:38,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:44:38,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:38,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:44:38,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:38,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:38,501 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:38,501 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 58 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:44:38,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 138 flow [2023-11-29 00:44:38,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:38,503 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 103 flow [2023-11-29 00:44:38,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2023-11-29 00:44:38,504 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-29 00:44:38,504 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 103 flow [2023-11-29 00:44:38,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:38,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:38,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:38,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 00:44:38,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:38,707 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:38,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:38,708 INFO L85 PathProgramCache]: Analyzing trace with hash 665435715, now seen corresponding path program 1 times [2023-11-29 00:44:38,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:38,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709884315] [2023-11-29 00:44:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:38,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:38,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:38,709 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:38,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 00:44:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:38,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:44:38,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:38,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:38,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:38,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709884315] [2023-11-29 00:44:38,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709884315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:38,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:38,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:44:38,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025338127] [2023-11-29 00:44:38,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:38,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:44:38,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:38,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:44:38,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:44:38,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:44:38,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:38,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:38,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:44:38,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:39,184 INFO L124 PetriNetUnfolderBase]: 476/836 cut-off events. [2023-11-29 00:44:39,184 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-29 00:44:39,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 836 events. 476/836 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3864 event pairs, 49 based on Foata normal form. 0/806 useless extension candidates. Maximal degree in co-relation 2074. Up to 420 conditions per place. [2023-11-29 00:44:39,193 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 68 selfloop transitions, 13 changer transitions 0/88 dead transitions. [2023-11-29 00:44:39,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 88 transitions, 463 flow [2023-11-29 00:44:39,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:44:39,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:44:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2023-11-29 00:44:39,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2023-11-29 00:44:39,195 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 174 transitions. [2023-11-29 00:44:39,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 174 transitions. [2023-11-29 00:44:39,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:39,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 174 transitions. [2023-11-29 00:44:39,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:39,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:39,199 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:39,199 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 103 flow. Second operand 8 states and 174 transitions. [2023-11-29 00:44:39,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 88 transitions, 463 flow [2023-11-29 00:44:39,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 88 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:39,204 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 191 flow [2023-11-29 00:44:39,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-11-29 00:44:39,205 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-11-29 00:44:39,205 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 191 flow [2023-11-29 00:44:39,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:39,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:39,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:39,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 00:44:39,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:39,408 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:39,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:39,409 INFO L85 PathProgramCache]: Analyzing trace with hash -846362831, now seen corresponding path program 1 times [2023-11-29 00:44:39,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:39,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279258566] [2023-11-29 00:44:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:39,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:39,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:39,410 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:39,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 00:44:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:39,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:44:39,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:39,641 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44|) (_ bv0 1)))) is different from true [2023-11-29 00:44:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:39,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:39,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:39,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279258566] [2023-11-29 00:44:39,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279258566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:39,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:39,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:39,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392528276] [2023-11-29 00:44:39,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:39,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:39,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:39,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:39,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:44:39,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:44:39,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:39,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:39,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:44:39,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:39,791 INFO L124 PetriNetUnfolderBase]: 292/590 cut-off events. [2023-11-29 00:44:39,791 INFO L125 PetriNetUnfolderBase]: For 341/435 co-relation queries the response was YES. [2023-11-29 00:44:39,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 590 events. 292/590 cut-off events. For 341/435 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3105 event pairs, 81 based on Foata normal form. 8/547 useless extension candidates. Maximal degree in co-relation 1622. Up to 307 conditions per place. [2023-11-29 00:44:39,798 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 21 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2023-11-29 00:44:39,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 301 flow [2023-11-29 00:44:39,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:44:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:44:39,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:44:39,800 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:44:39,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:44:39,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:39,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:44:39,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:39,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:39,802 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:39,802 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 191 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:44:39,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 301 flow [2023-11-29 00:44:39,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 301 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:44:39,807 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 258 flow [2023-11-29 00:44:39,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-11-29 00:44:39,808 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2023-11-29 00:44:39,808 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 258 flow [2023-11-29 00:44:39,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:39,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:39,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:39,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 00:44:40,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:40,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:40,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:40,010 INFO L85 PathProgramCache]: Analyzing trace with hash -846362676, now seen corresponding path program 1 times [2023-11-29 00:44:40,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:40,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202796614] [2023-11-29 00:44:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:40,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:40,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:40,011 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:40,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 00:44:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:40,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:44:40,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:40,242 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37|) (_ bv0 1)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ bv0 1))))) is different from true [2023-11-29 00:44:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:40,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:40,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:40,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202796614] [2023-11-29 00:44:40,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202796614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:40,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:40,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:40,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282169632] [2023-11-29 00:44:40,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:40,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:40,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:40,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:40,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:44:40,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:44:40,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:40,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:40,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:44:40,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:40,430 INFO L124 PetriNetUnfolderBase]: 302/616 cut-off events. [2023-11-29 00:44:40,431 INFO L125 PetriNetUnfolderBase]: For 686/882 co-relation queries the response was YES. [2023-11-29 00:44:40,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 616 events. 302/616 cut-off events. For 686/882 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3280 event pairs, 81 based on Foata normal form. 12/577 useless extension candidates. Maximal degree in co-relation 2084. Up to 323 conditions per place. [2023-11-29 00:44:40,439 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 26 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2023-11-29 00:44:40,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 396 flow [2023-11-29 00:44:40,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:44:40,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:44:40,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:44:40,441 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:44:40,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:44:40,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:40,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:44:40,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:40,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:40,443 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:40,443 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 258 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:44:40,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 396 flow [2023-11-29 00:44:40,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:40,449 INFO L231 Difference]: Finished difference. Result has 49 places, 54 transitions, 320 flow [2023-11-29 00:44:40,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=49, PETRI_TRANSITIONS=54} [2023-11-29 00:44:40,450 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-11-29 00:44:40,450 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 320 flow [2023-11-29 00:44:40,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:40,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:40,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:40,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 00:44:40,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:40,654 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:40,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:40,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1571463786, now seen corresponding path program 1 times [2023-11-29 00:44:40,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:40,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482603267] [2023-11-29 00:44:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:40,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:40,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:40,655 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:40,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 00:44:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:40,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:44:40,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:40,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:40,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:40,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:40,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482603267] [2023-11-29 00:44:40,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482603267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:40,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:40,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:44:40,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828981552] [2023-11-29 00:44:40,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:40,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:40,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:40,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:40,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:40,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2023-11-29 00:44:40,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:40,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:40,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2023-11-29 00:44:40,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:40,856 INFO L124 PetriNetUnfolderBase]: 331/649 cut-off events. [2023-11-29 00:44:40,857 INFO L125 PetriNetUnfolderBase]: For 1270/1667 co-relation queries the response was YES. [2023-11-29 00:44:40,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 649 events. 331/649 cut-off events. For 1270/1667 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3400 event pairs, 62 based on Foata normal form. 42/622 useless extension candidates. Maximal degree in co-relation 2601. Up to 358 conditions per place. [2023-11-29 00:44:40,865 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 37 selfloop transitions, 7 changer transitions 0/69 dead transitions. [2023-11-29 00:44:40,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 517 flow [2023-11-29 00:44:40,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:40,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:44:40,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2023-11-29 00:44:40,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-29 00:44:40,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 77 transitions. [2023-11-29 00:44:40,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 77 transitions. [2023-11-29 00:44:40,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:40,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 77 transitions. [2023-11-29 00:44:40,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:40,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:40,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:40,868 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 320 flow. Second operand 3 states and 77 transitions. [2023-11-29 00:44:40,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 517 flow [2023-11-29 00:44:40,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 497 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:40,873 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 358 flow [2023-11-29 00:44:40,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2023-11-29 00:44:40,874 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-11-29 00:44:40,875 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 358 flow [2023-11-29 00:44:40,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:40,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:40,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:40,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 00:44:41,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:41,078 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:41,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:41,078 INFO L85 PathProgramCache]: Analyzing trace with hash 92591260, now seen corresponding path program 1 times [2023-11-29 00:44:41,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:41,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507302109] [2023-11-29 00:44:41,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:41,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:41,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:41,080 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:41,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 00:44:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:41,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:44:41,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:41,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:41,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:41,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507302109] [2023-11-29 00:44:41,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507302109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:41,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:41,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:44:41,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143217755] [2023-11-29 00:44:41,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:41,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:41,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:41,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:41,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:41,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2023-11-29 00:44:41,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:41,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:41,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2023-11-29 00:44:41,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:41,263 INFO L124 PetriNetUnfolderBase]: 347/749 cut-off events. [2023-11-29 00:44:41,263 INFO L125 PetriNetUnfolderBase]: For 1923/2279 co-relation queries the response was YES. [2023-11-29 00:44:41,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3105 conditions, 749 events. 347/749 cut-off events. For 1923/2279 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4468 event pairs, 73 based on Foata normal form. 50/749 useless extension candidates. Maximal degree in co-relation 3083. Up to 380 conditions per place. [2023-11-29 00:44:41,270 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 38 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-11-29 00:44:41,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 569 flow [2023-11-29 00:44:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:44:41,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-29 00:44:41,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-29 00:44:41,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-29 00:44:41,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-29 00:44:41,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:41,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-29 00:44:41,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:41,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:41,272 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:41,272 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 358 flow. Second operand 3 states and 75 transitions. [2023-11-29 00:44:41,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 569 flow [2023-11-29 00:44:41,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:44:41,287 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 398 flow [2023-11-29 00:44:41,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2023-11-29 00:44:41,288 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-11-29 00:44:41,288 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 398 flow [2023-11-29 00:44:41,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:41,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:41,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:41,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 00:44:41,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:41,489 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:41,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:41,489 INFO L85 PathProgramCache]: Analyzing trace with hash -467443401, now seen corresponding path program 1 times [2023-11-29 00:44:41,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:41,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59081088] [2023-11-29 00:44:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:41,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:41,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:41,491 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:41,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 00:44:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:41,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:44:41,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:41,690 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 00:44:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:41,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:41,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:41,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59081088] [2023-11-29 00:44:41,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59081088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:41,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:41,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:41,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690561180] [2023-11-29 00:44:41,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:41,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:41,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:41,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:41,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:44:41,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:44:41,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:41,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:41,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:44:41,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:41,817 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([175] L721-1-->main_returnLabel#1: Formula: (and (= (_ bv0 32) |v_ULTIMATE.start_main_#res#1_32|) (= (store (store |v_#valid_83| |v_ULTIMATE.start_main_~#id1~0#1.base_40| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_32| (_ bv0 1)) |v_#valid_82|)) InVars {ULTIMATE.start_main_~#id2~0#1.base=|v_ULTIMATE.start_main_~#id2~0#1.base_32|, #valid=|v_#valid_83|, ULTIMATE.start_main_~#id1~0#1.base=|v_ULTIMATE.start_main_~#id1~0#1.base_40|} OutVars{ULTIMATE.start_main_~#id2~0#1.offset=|v_ULTIMATE.start_main_~#id2~0#1.offset_28|, ULTIMATE.start_main_~#id1~0#1.offset=|v_ULTIMATE.start_main_~#id1~0#1.offset_32|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_32|, #valid=|v_#valid_82|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#id2~0#1.offset, ULTIMATE.start_main_#res#1, #valid, ULTIMATE.start_main_~#id2~0#1.base, ULTIMATE.start_main_~#id1~0#1.offset, ULTIMATE.start_main_~#id1~0#1.base][27], [33#L707true, t1Thread1of1ForFork0InUse, 29#main_returnLabel#1true, 385#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ BitVec 32))) (and (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46|) (_ bv0 1)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38|)))), t2Thread1of1ForFork1InUse, 157#(and (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), 213#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ BitVec 32))) (and (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44|)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36|)))), Black: 165#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 131#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32))), 331#(= (_ bv0 32) t2Thread1of1ForFork1_~k~1), Black: 169#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 126#true, Black: 167#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 278#(= (_ bv0 32) t1Thread1of1ForFork0_~k~0), 25#L696-5true, 255#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37|)))), 123#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35|))))]) [2023-11-29 00:44:41,817 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is not cut-off event [2023-11-29 00:44:41,817 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is not cut-off event [2023-11-29 00:44:41,817 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is not cut-off event [2023-11-29 00:44:41,817 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is not cut-off event [2023-11-29 00:44:41,822 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([175] L721-1-->main_returnLabel#1: Formula: (and (= (_ bv0 32) |v_ULTIMATE.start_main_#res#1_32|) (= (store (store |v_#valid_83| |v_ULTIMATE.start_main_~#id1~0#1.base_40| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_32| (_ bv0 1)) |v_#valid_82|)) InVars {ULTIMATE.start_main_~#id2~0#1.base=|v_ULTIMATE.start_main_~#id2~0#1.base_32|, #valid=|v_#valid_83|, ULTIMATE.start_main_~#id1~0#1.base=|v_ULTIMATE.start_main_~#id1~0#1.base_40|} OutVars{ULTIMATE.start_main_~#id2~0#1.offset=|v_ULTIMATE.start_main_~#id2~0#1.offset_28|, ULTIMATE.start_main_~#id1~0#1.offset=|v_ULTIMATE.start_main_~#id1~0#1.offset_32|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_32|, #valid=|v_#valid_82|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#id2~0#1.offset, ULTIMATE.start_main_#res#1, #valid, ULTIMATE.start_main_~#id2~0#1.base, ULTIMATE.start_main_~#id1~0#1.offset, ULTIMATE.start_main_~#id1~0#1.base][27], [9#t1EXITtrue, 33#L707true, t1Thread1of1ForFork0InUse, 29#main_returnLabel#1true, 385#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ BitVec 32))) (and (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46|) (_ bv0 1)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38|)))), t2Thread1of1ForFork1InUse, 157#(and (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), 213#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ BitVec 32))) (and (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44|)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36|)))), Black: 165#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 131#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32))), 331#(= (_ bv0 32) t2Thread1of1ForFork1_~k~1), Black: 169#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 126#true, Black: 167#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 278#(= (_ bv0 32) t1Thread1of1ForFork0_~k~0), 255#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37|)))), 123#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35|))))]) [2023-11-29 00:44:41,822 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is not cut-off event [2023-11-29 00:44:41,822 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is not cut-off event [2023-11-29 00:44:41,822 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is not cut-off event [2023-11-29 00:44:41,822 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2023-11-29 00:44:41,843 INFO L124 PetriNetUnfolderBase]: 360/741 cut-off events. [2023-11-29 00:44:41,843 INFO L125 PetriNetUnfolderBase]: For 2171/2616 co-relation queries the response was YES. [2023-11-29 00:44:41,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 741 events. 360/741 cut-off events. For 2171/2616 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4178 event pairs, 106 based on Foata normal form. 7/667 useless extension candidates. Maximal degree in co-relation 3270. Up to 377 conditions per place. [2023-11-29 00:44:41,850 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 28 selfloop transitions, 18 changer transitions 0/68 dead transitions. [2023-11-29 00:44:41,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 68 transitions, 589 flow [2023-11-29 00:44:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:44:41,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:44:41,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:44:41,851 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:44:41,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:44:41,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:41,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:44:41,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:41,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:41,853 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:41,853 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 398 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:44:41,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 68 transitions, 589 flow [2023-11-29 00:44:41,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:44:41,858 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 470 flow [2023-11-29 00:44:41,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=470, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-11-29 00:44:41,858 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2023-11-29 00:44:41,859 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 470 flow [2023-11-29 00:44:41,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:41,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:41,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:41,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 00:44:42,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:42,060 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:42,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:42,060 INFO L85 PathProgramCache]: Analyzing trace with hash 626340986, now seen corresponding path program 1 times [2023-11-29 00:44:42,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:42,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372271608] [2023-11-29 00:44:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:42,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:42,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:42,061 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:42,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 00:44:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:44:42,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:42,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:42,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:42,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372271608] [2023-11-29 00:44:42,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372271608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:42,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:42,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:44:42,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423559412] [2023-11-29 00:44:42,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:42,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:44:42,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:42,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:44:42,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:44:42,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:44:42,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 470 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:42,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:42,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:44:42,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:42,540 INFO L124 PetriNetUnfolderBase]: 711/1258 cut-off events. [2023-11-29 00:44:42,540 INFO L125 PetriNetUnfolderBase]: For 5229/5319 co-relation queries the response was YES. [2023-11-29 00:44:42,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5878 conditions, 1258 events. 711/1258 cut-off events. For 5229/5319 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6528 event pairs, 57 based on Foata normal form. 24/1260 useless extension candidates. Maximal degree in co-relation 5853. Up to 585 conditions per place. [2023-11-29 00:44:42,557 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 90 selfloop transitions, 22 changer transitions 0/119 dead transitions. [2023-11-29 00:44:42,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 119 transitions, 1178 flow [2023-11-29 00:44:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:44:42,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:44:42,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2023-11-29 00:44:42,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-29 00:44:42,559 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 168 transitions. [2023-11-29 00:44:42,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 168 transitions. [2023-11-29 00:44:42,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:42,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 168 transitions. [2023-11-29 00:44:42,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:42,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:42,562 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:42,562 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 470 flow. Second operand 8 states and 168 transitions. [2023-11-29 00:44:42,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 119 transitions, 1178 flow [2023-11-29 00:44:42,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 119 transitions, 1149 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:42,573 INFO L231 Difference]: Finished difference. Result has 65 places, 73 transitions, 604 flow [2023-11-29 00:44:42,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=604, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2023-11-29 00:44:42,574 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-11-29 00:44:42,574 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 604 flow [2023-11-29 00:44:42,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:42,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:42,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:42,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 00:44:42,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:42,776 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:42,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:42,777 INFO L85 PathProgramCache]: Analyzing trace with hash 43846129, now seen corresponding path program 1 times [2023-11-29 00:44:42,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:42,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360516107] [2023-11-29 00:44:42,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:42,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:42,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:42,778 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:42,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 00:44:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:42,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:44:42,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:42,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:42,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:42,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:42,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360516107] [2023-11-29 00:44:42,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360516107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:42,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:42,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:44:42,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519280979] [2023-11-29 00:44:42,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:42,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:44:42,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:42,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:44:42,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:44:42,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:44:42,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 73 transitions, 604 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:42,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:42,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:44:42,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:43,375 INFO L124 PetriNetUnfolderBase]: 1066/1862 cut-off events. [2023-11-29 00:44:43,376 INFO L125 PetriNetUnfolderBase]: For 9510/9640 co-relation queries the response was YES. [2023-11-29 00:44:43,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9535 conditions, 1862 events. 1066/1862 cut-off events. For 9510/9640 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10374 event pairs, 165 based on Foata normal form. 40/1871 useless extension candidates. Maximal degree in co-relation 9505. Up to 895 conditions per place. [2023-11-29 00:44:43,395 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 148 selfloop transitions, 33 changer transitions 0/188 dead transitions. [2023-11-29 00:44:43,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 188 transitions, 2046 flow [2023-11-29 00:44:43,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:44:43,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:44:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2023-11-29 00:44:43,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6171428571428571 [2023-11-29 00:44:43,397 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 216 transitions. [2023-11-29 00:44:43,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 216 transitions. [2023-11-29 00:44:43,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:43,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 216 transitions. [2023-11-29 00:44:43,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:43,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:43,400 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:43,400 INFO L175 Difference]: Start difference. First operand has 65 places, 73 transitions, 604 flow. Second operand 10 states and 216 transitions. [2023-11-29 00:44:43,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 188 transitions, 2046 flow [2023-11-29 00:44:43,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 188 transitions, 2040 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-29 00:44:43,421 INFO L231 Difference]: Finished difference. Result has 82 places, 98 transitions, 950 flow [2023-11-29 00:44:43,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=950, PETRI_PLACES=82, PETRI_TRANSITIONS=98} [2023-11-29 00:44:43,422 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2023-11-29 00:44:43,423 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 98 transitions, 950 flow [2023-11-29 00:44:43,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:43,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:43,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:43,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 00:44:43,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:43,624 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:43,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:43,624 INFO L85 PathProgramCache]: Analyzing trace with hash 958131919, now seen corresponding path program 2 times [2023-11-29 00:44:43,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:43,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299373618] [2023-11-29 00:44:43,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:44:43,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:43,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:43,626 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:43,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 00:44:43,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:44:43,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:44:43,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:44:43,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:43,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:43,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:43,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299373618] [2023-11-29 00:44:43,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299373618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:43,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:43,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:44:43,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205135321] [2023-11-29 00:44:43,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:43,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:44:43,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:43,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:44:43,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:44:43,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:44:43,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 98 transitions, 950 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:43,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:43,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:44:43,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:44,215 INFO L124 PetriNetUnfolderBase]: 1367/2362 cut-off events. [2023-11-29 00:44:44,215 INFO L125 PetriNetUnfolderBase]: For 17556/17750 co-relation queries the response was YES. [2023-11-29 00:44:44,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13580 conditions, 2362 events. 1367/2362 cut-off events. For 17556/17750 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13592 event pairs, 182 based on Foata normal form. 54/2371 useless extension candidates. Maximal degree in co-relation 13540. Up to 1195 conditions per place. [2023-11-29 00:44:44,239 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 154 selfloop transitions, 40 changer transitions 0/201 dead transitions. [2023-11-29 00:44:44,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 201 transitions, 2401 flow [2023-11-29 00:44:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:44:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:44:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2023-11-29 00:44:44,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-29 00:44:44,241 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 210 transitions. [2023-11-29 00:44:44,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 210 transitions. [2023-11-29 00:44:44,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:44,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 210 transitions. [2023-11-29 00:44:44,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:44,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:44,243 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:44,243 INFO L175 Difference]: Start difference. First operand has 82 places, 98 transitions, 950 flow. Second operand 10 states and 210 transitions. [2023-11-29 00:44:44,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 201 transitions, 2401 flow [2023-11-29 00:44:44,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 201 transitions, 2273 flow, removed 64 selfloop flow, removed 0 redundant places. [2023-11-29 00:44:44,277 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 1255 flow [2023-11-29 00:44:44,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1255, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2023-11-29 00:44:44,278 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2023-11-29 00:44:44,278 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 1255 flow [2023-11-29 00:44:44,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:44,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:44,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:44,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 00:44:44,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:44,479 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:44,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:44,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1255130824, now seen corresponding path program 1 times [2023-11-29 00:44:44,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:44,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877436584] [2023-11-29 00:44:44,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:44,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:44,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:44,480 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:44,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 00:44:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:44,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:44:44,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:44,709 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_39| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_47| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_47|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_47| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_39|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_47| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_39| (_ bv0 1))))) is different from true [2023-11-29 00:44:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:44,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:44,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:44,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877436584] [2023-11-29 00:44:44,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877436584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:44,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:44,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:44,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905215935] [2023-11-29 00:44:44,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:44,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:44,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:44,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:44,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:44:44,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:44:44,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 1255 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:44,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:44,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:44:44,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:44,987 INFO L124 PetriNetUnfolderBase]: 747/1569 cut-off events. [2023-11-29 00:44:44,988 INFO L125 PetriNetUnfolderBase]: For 10012/10952 co-relation queries the response was YES. [2023-11-29 00:44:44,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8759 conditions, 1569 events. 747/1569 cut-off events. For 10012/10952 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10394 event pairs, 156 based on Foata normal form. 126/1569 useless extension candidates. Maximal degree in co-relation 8709. Up to 872 conditions per place. [2023-11-29 00:44:45,007 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 39 selfloop transitions, 13 changer transitions 0/131 dead transitions. [2023-11-29 00:44:45,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 131 transitions, 1499 flow [2023-11-29 00:44:45,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:45,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:44:45,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:44:45,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:44:45,008 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:44:45,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:44:45,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:45,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:44:45,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,009 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,009 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 1255 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:44:45,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 131 transitions, 1499 flow [2023-11-29 00:44:45,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 131 transitions, 1442 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-11-29 00:44:45,039 INFO L231 Difference]: Finished difference. Result has 99 places, 122 transitions, 1298 flow [2023-11-29 00:44:45,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1298, PETRI_PLACES=99, PETRI_TRANSITIONS=122} [2023-11-29 00:44:45,040 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2023-11-29 00:44:45,040 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 122 transitions, 1298 flow [2023-11-29 00:44:45,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:45,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:45,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 00:44:45,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:45,241 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:45,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1758355290, now seen corresponding path program 2 times [2023-11-29 00:44:45,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:45,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328357514] [2023-11-29 00:44:45,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:44:45,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:45,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:45,243 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:45,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 00:44:45,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:44:45,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:44:45,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:44:45,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:45,474 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_48| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_40| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_48| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_40|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_48| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_40| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_48|) (_ bv0 1)))) is different from true [2023-11-29 00:44:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:45,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:45,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:45,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328357514] [2023-11-29 00:44:45,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328357514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:45,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:45,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:45,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478388464] [2023-11-29 00:44:45,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:45,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:45,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:45,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:45,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:44:45,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:44:45,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 122 transitions, 1298 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:45,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:44:45,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:45,755 INFO L124 PetriNetUnfolderBase]: 755/1598 cut-off events. [2023-11-29 00:44:45,755 INFO L125 PetriNetUnfolderBase]: For 11368/12437 co-relation queries the response was YES. [2023-11-29 00:44:45,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9545 conditions, 1598 events. 755/1598 cut-off events. For 11368/12437 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10698 event pairs, 156 based on Foata normal form. 135/1610 useless extension candidates. Maximal degree in co-relation 9494. Up to 883 conditions per place. [2023-11-29 00:44:45,775 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 36 selfloop transitions, 21 changer transitions 0/136 dead transitions. [2023-11-29 00:44:45,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 136 transitions, 1572 flow [2023-11-29 00:44:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:45,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:44:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:44:45,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:44:45,777 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:44:45,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:44:45,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:45,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:44:45,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,778 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,778 INFO L175 Difference]: Start difference. First operand has 99 places, 122 transitions, 1298 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:44:45,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 136 transitions, 1572 flow [2023-11-29 00:44:45,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 1558 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:45,801 INFO L231 Difference]: Finished difference. Result has 101 places, 127 transitions, 1418 flow [2023-11-29 00:44:45,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1418, PETRI_PLACES=101, PETRI_TRANSITIONS=127} [2023-11-29 00:44:45,801 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2023-11-29 00:44:45,801 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 127 transitions, 1418 flow [2023-11-29 00:44:45,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:45,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:45,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 00:44:46,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:46,009 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:46,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1986924656, now seen corresponding path program 1 times [2023-11-29 00:44:46,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:46,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449247205] [2023-11-29 00:44:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:46,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:46,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:46,010 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:46,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 00:44:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:46,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:44:46,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:46,197 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_49| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_41| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_49|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_49| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_41| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_49| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_41|)))) is different from true [2023-11-29 00:44:46,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:46,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:46,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:46,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449247205] [2023-11-29 00:44:46,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449247205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:46,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:46,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:46,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635274847] [2023-11-29 00:44:46,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:46,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:46,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:46,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:46,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:44:46,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:44:46,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 127 transitions, 1418 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:46,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:46,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:44:46,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:46,485 INFO L124 PetriNetUnfolderBase]: 779/1648 cut-off events. [2023-11-29 00:44:46,485 INFO L125 PetriNetUnfolderBase]: For 13128/14375 co-relation queries the response was YES. [2023-11-29 00:44:46,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10510 conditions, 1648 events. 779/1648 cut-off events. For 13128/14375 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11075 event pairs, 155 based on Foata normal form. 162/1682 useless extension candidates. Maximal degree in co-relation 10458. Up to 910 conditions per place. [2023-11-29 00:44:46,502 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 49 selfloop transitions, 13 changer transitions 0/141 dead transitions. [2023-11-29 00:44:46,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 141 transitions, 1714 flow [2023-11-29 00:44:46,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:46,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:44:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:44:46,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:44:46,503 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:44:46,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:44:46,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:46,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:44:46,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:46,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:46,505 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:46,505 INFO L175 Difference]: Start difference. First operand has 101 places, 127 transitions, 1418 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:44:46,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 141 transitions, 1714 flow [2023-11-29 00:44:46,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 141 transitions, 1664 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:46,537 INFO L231 Difference]: Finished difference. Result has 103 places, 132 transitions, 1488 flow [2023-11-29 00:44:46,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1488, PETRI_PLACES=103, PETRI_TRANSITIONS=132} [2023-11-29 00:44:46,538 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2023-11-29 00:44:46,538 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 132 transitions, 1488 flow [2023-11-29 00:44:46,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:46,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:46,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:46,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 00:44:46,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:46,739 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:46,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:46,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1763126810, now seen corresponding path program 2 times [2023-11-29 00:44:46,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:46,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535684050] [2023-11-29 00:44:46,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:44:46,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:46,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:46,741 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:46,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 00:44:46,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:44:46,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:44:46,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:44:46,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:46,954 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_50| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_42| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_50|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_50| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_42| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_50| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_42|)))) is different from true [2023-11-29 00:44:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:47,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:47,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:47,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535684050] [2023-11-29 00:44:47,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535684050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:47,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:47,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:47,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131064540] [2023-11-29 00:44:47,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:47,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:47,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:47,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:47,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:44:47,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:44:47,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 132 transitions, 1488 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:47,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:47,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:44:47,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:47,302 INFO L124 PetriNetUnfolderBase]: 787/1671 cut-off events. [2023-11-29 00:44:47,302 INFO L125 PetriNetUnfolderBase]: For 14230/15495 co-relation queries the response was YES. [2023-11-29 00:44:47,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10895 conditions, 1671 events. 787/1671 cut-off events. For 14230/15495 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11354 event pairs, 155 based on Foata normal form. 173/1717 useless extension candidates. Maximal degree in co-relation 10842. Up to 921 conditions per place. [2023-11-29 00:44:47,332 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 46 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2023-11-29 00:44:47,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 146 transitions, 1798 flow [2023-11-29 00:44:47,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:47,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:44:47,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:44:47,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:44:47,333 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:44:47,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:44:47,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:47,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:44:47,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:47,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:47,335 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:47,335 INFO L175 Difference]: Start difference. First operand has 103 places, 132 transitions, 1488 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:44:47,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 146 transitions, 1798 flow [2023-11-29 00:44:47,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 146 transitions, 1784 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:47,362 INFO L231 Difference]: Finished difference. Result has 105 places, 137 transitions, 1612 flow [2023-11-29 00:44:47,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1612, PETRI_PLACES=105, PETRI_TRANSITIONS=137} [2023-11-29 00:44:47,363 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 69 predicate places. [2023-11-29 00:44:47,363 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 137 transitions, 1612 flow [2023-11-29 00:44:47,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:47,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:47,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:47,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-29 00:44:47,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:47,564 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:47,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:47,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1131076429, now seen corresponding path program 1 times [2023-11-29 00:44:47,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:47,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418914612] [2023-11-29 00:44:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:47,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:47,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:47,565 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:47,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 00:44:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:47,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:44:47,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:47,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:44:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:47,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:47,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418914612] [2023-11-29 00:44:47,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418914612] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:44:47,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:44:47,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-29 00:44:47,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173457568] [2023-11-29 00:44:47,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:44:47,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:44:47,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:47,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:44:47,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:44:47,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 00:44:47,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 1612 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:47,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:47,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 00:44:47,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:48,247 INFO L124 PetriNetUnfolderBase]: 1950/4041 cut-off events. [2023-11-29 00:44:48,247 INFO L125 PetriNetUnfolderBase]: For 43138/45506 co-relation queries the response was YES. [2023-11-29 00:44:48,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25759 conditions, 4041 events. 1950/4041 cut-off events. For 43138/45506 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 30962 event pairs, 229 based on Foata normal form. 618/4475 useless extension candidates. Maximal degree in co-relation 25706. Up to 1967 conditions per place. [2023-11-29 00:44:48,314 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 130 selfloop transitions, 28 changer transitions 0/239 dead transitions. [2023-11-29 00:44:48,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 239 transitions, 3288 flow [2023-11-29 00:44:48,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:44:48,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:44:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2023-11-29 00:44:48,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7523809523809524 [2023-11-29 00:44:48,316 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 158 transitions. [2023-11-29 00:44:48,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 158 transitions. [2023-11-29 00:44:48,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:48,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 158 transitions. [2023-11-29 00:44:48,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:48,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:48,318 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:48,318 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 1612 flow. Second operand 6 states and 158 transitions. [2023-11-29 00:44:48,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 239 transitions, 3288 flow [2023-11-29 00:44:48,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 239 transitions, 3218 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:48,404 INFO L231 Difference]: Finished difference. Result has 112 places, 148 transitions, 1864 flow [2023-11-29 00:44:48,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1864, PETRI_PLACES=112, PETRI_TRANSITIONS=148} [2023-11-29 00:44:48,405 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 76 predicate places. [2023-11-29 00:44:48,405 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 148 transitions, 1864 flow [2023-11-29 00:44:48,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:48,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:48,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:48,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-29 00:44:48,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:48,606 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:48,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:48,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1348439954, now seen corresponding path program 1 times [2023-11-29 00:44:48,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:48,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502559841] [2023-11-29 00:44:48,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:48,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:48,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:48,607 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:48,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 00:44:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:48,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:44:48,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:48,820 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_51| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_43| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_51|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_51| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_43| (_ bv0 1))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_51| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_43|) (_ bv0 1)))) is different from true [2023-11-29 00:44:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:48,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:48,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:48,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502559841] [2023-11-29 00:44:48,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502559841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:48,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:48,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:48,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387138695] [2023-11-29 00:44:48,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:48,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:48,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:48,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:48,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:44:48,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:44:48,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 148 transitions, 1864 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:48,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:48,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:44:48,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:49,451 INFO L124 PetriNetUnfolderBase]: 1423/3295 cut-off events. [2023-11-29 00:44:49,452 INFO L125 PetriNetUnfolderBase]: For 35973/38320 co-relation queries the response was YES. [2023-11-29 00:44:49,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22480 conditions, 3295 events. 1423/3295 cut-off events. For 35973/38320 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 26758 event pairs, 374 based on Foata normal form. 269/3298 useless extension candidates. Maximal degree in co-relation 22424. Up to 1686 conditions per place. [2023-11-29 00:44:49,485 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 67 selfloop transitions, 16 changer transitions 0/163 dead transitions. [2023-11-29 00:44:49,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 163 transitions, 2260 flow [2023-11-29 00:44:49,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:44:49,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:44:49,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:44:49,486 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:44:49,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:44:49,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:49,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:44:49,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:49,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:49,487 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:49,487 INFO L175 Difference]: Start difference. First operand has 112 places, 148 transitions, 1864 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:44:49,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 163 transitions, 2260 flow [2023-11-29 00:44:49,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 163 transitions, 2204 flow, removed 21 selfloop flow, removed 1 redundant places. [2023-11-29 00:44:49,560 INFO L231 Difference]: Finished difference. Result has 115 places, 150 transitions, 1909 flow [2023-11-29 00:44:49,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1909, PETRI_PLACES=115, PETRI_TRANSITIONS=150} [2023-11-29 00:44:49,561 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 79 predicate places. [2023-11-29 00:44:49,561 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 150 transitions, 1909 flow [2023-11-29 00:44:49,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:49,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:49,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:49,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 00:44:49,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:49,762 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:49,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:49,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1183398614, now seen corresponding path program 2 times [2023-11-29 00:44:49,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:49,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510578543] [2023-11-29 00:44:49,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:44:49,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:49,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:49,763 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:49,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 00:44:49,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:44:49,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:44:49,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:44:49,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:49,941 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_52| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_44| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_52|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_52| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_44| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_52| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_44|)))) is different from true [2023-11-29 00:44:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:49,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:49,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:49,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510578543] [2023-11-29 00:44:49,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510578543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:49,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:49,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:49,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415675664] [2023-11-29 00:44:49,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:49,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:49,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:49,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:44:50,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:44:50,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 150 transitions, 1909 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:50,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:50,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:44:50,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:50,529 INFO L124 PetriNetUnfolderBase]: 1407/3271 cut-off events. [2023-11-29 00:44:50,529 INFO L125 PetriNetUnfolderBase]: For 36678/39061 co-relation queries the response was YES. [2023-11-29 00:44:50,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22681 conditions, 3271 events. 1407/3271 cut-off events. For 36678/39061 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 26648 event pairs, 368 based on Foata normal form. 273/3284 useless extension candidates. Maximal degree in co-relation 22622. Up to 1662 conditions per place. [2023-11-29 00:44:50,570 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 61 selfloop transitions, 24 changer transitions 0/165 dead transitions. [2023-11-29 00:44:50,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 165 transitions, 2303 flow [2023-11-29 00:44:50,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:50,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:44:50,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:44:50,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:44:50,571 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:44:50,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:44:50,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:50,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:44:50,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:50,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:50,573 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:50,573 INFO L175 Difference]: Start difference. First operand has 115 places, 150 transitions, 1909 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:44:50,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 165 transitions, 2303 flow [2023-11-29 00:44:50,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 165 transitions, 2286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:50,668 INFO L231 Difference]: Finished difference. Result has 117 places, 152 transitions, 2007 flow [2023-11-29 00:44:50,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2007, PETRI_PLACES=117, PETRI_TRANSITIONS=152} [2023-11-29 00:44:50,669 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 81 predicate places. [2023-11-29 00:44:50,669 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 152 transitions, 2007 flow [2023-11-29 00:44:50,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:50,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:50,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:50,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-29 00:44:50,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:50,870 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:50,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:50,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1591410048, now seen corresponding path program 1 times [2023-11-29 00:44:50,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:50,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123227664] [2023-11-29 00:44:50,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:50,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:50,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:50,871 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:50,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 00:44:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:50,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:44:50,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:50,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:44:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:50,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:50,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123227664] [2023-11-29 00:44:50,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123227664] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:44:50,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:44:50,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-29 00:44:50,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742136254] [2023-11-29 00:44:50,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:44:50,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:44:50,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:50,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:44:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:44:50,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 00:44:50,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 152 transitions, 2007 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:50,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:50,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 00:44:50,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:52,244 INFO L124 PetriNetUnfolderBase]: 3757/8395 cut-off events. [2023-11-29 00:44:52,244 INFO L125 PetriNetUnfolderBase]: For 111492/115784 co-relation queries the response was YES. [2023-11-29 00:44:52,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56502 conditions, 8395 events. 3757/8395 cut-off events. For 111492/115784 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 76925 event pairs, 570 based on Foata normal form. 1169/9183 useless extension candidates. Maximal degree in co-relation 56443. Up to 3874 conditions per place. [2023-11-29 00:44:52,330 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 162 selfloop transitions, 30 changer transitions 0/274 dead transitions. [2023-11-29 00:44:52,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 274 transitions, 4475 flow [2023-11-29 00:44:52,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:44:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:44:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2023-11-29 00:44:52,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-29 00:44:52,332 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 150 transitions. [2023-11-29 00:44:52,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 150 transitions. [2023-11-29 00:44:52,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:52,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 150 transitions. [2023-11-29 00:44:52,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:52,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:52,334 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:52,334 INFO L175 Difference]: Start difference. First operand has 117 places, 152 transitions, 2007 flow. Second operand 6 states and 150 transitions. [2023-11-29 00:44:52,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 274 transitions, 4475 flow [2023-11-29 00:44:52,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 274 transitions, 4412 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:52,634 INFO L231 Difference]: Finished difference. Result has 124 places, 163 transitions, 2288 flow [2023-11-29 00:44:52,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2288, PETRI_PLACES=124, PETRI_TRANSITIONS=163} [2023-11-29 00:44:52,635 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 88 predicate places. [2023-11-29 00:44:52,635 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 163 transitions, 2288 flow [2023-11-29 00:44:52,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:52,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:52,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:52,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-11-29 00:44:52,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:52,836 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:52,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:52,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2039135433, now seen corresponding path program 1 times [2023-11-29 00:44:52,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:52,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711007844] [2023-11-29 00:44:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:52,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:52,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:52,837 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:52,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 00:44:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:52,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:44:52,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:53,002 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_45| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_53| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_53| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_45|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_53| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_45| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_53|) (_ bv0 1)))) is different from true [2023-11-29 00:44:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:53,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:53,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:53,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711007844] [2023-11-29 00:44:53,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711007844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:53,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:53,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:53,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299948284] [2023-11-29 00:44:53,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:53,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:53,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:53,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:53,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:44:53,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:44:53,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 163 transitions, 2288 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:53,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:53,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:44:53,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:54,230 INFO L124 PetriNetUnfolderBase]: 2748/6664 cut-off events. [2023-11-29 00:44:54,230 INFO L125 PetriNetUnfolderBase]: For 89166/94010 co-relation queries the response was YES. [2023-11-29 00:44:54,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48272 conditions, 6664 events. 2748/6664 cut-off events. For 89166/94010 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 61789 event pairs, 806 based on Foata normal form. 607/6666 useless extension candidates. Maximal degree in co-relation 48210. Up to 3171 conditions per place. [2023-11-29 00:44:54,398 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 79 selfloop transitions, 20 changer transitions 0/180 dead transitions. [2023-11-29 00:44:54,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 180 transitions, 2762 flow [2023-11-29 00:44:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:44:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:44:54,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:44:54,401 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:44:54,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:44:54,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:54,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:44:54,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:54,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:54,403 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:54,403 INFO L175 Difference]: Start difference. First operand has 124 places, 163 transitions, 2288 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:44:54,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 180 transitions, 2762 flow [2023-11-29 00:44:54,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 180 transitions, 2704 flow, removed 21 selfloop flow, removed 1 redundant places. [2023-11-29 00:44:54,602 INFO L231 Difference]: Finished difference. Result has 127 places, 165 transitions, 2345 flow [2023-11-29 00:44:54,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2345, PETRI_PLACES=127, PETRI_TRANSITIONS=165} [2023-11-29 00:44:54,603 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 91 predicate places. [2023-11-29 00:44:54,603 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 165 transitions, 2345 flow [2023-11-29 00:44:54,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:54,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:54,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:54,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-29 00:44:54,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:54,803 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:54,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:54,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1177651679, now seen corresponding path program 2 times [2023-11-29 00:44:54,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:54,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045965161] [2023-11-29 00:44:54,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:44:54,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:54,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:54,805 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:54,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 00:44:54,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:44:54,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:44:54,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:44:54,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:54,972 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_46| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_54| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_54|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_54| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_46|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_54| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 00:44:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:55,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:55,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:55,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045965161] [2023-11-29 00:44:55,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045965161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:55,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:55,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:55,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331756470] [2023-11-29 00:44:55,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:55,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:55,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:55,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:55,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:44:55,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:44:55,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 165 transitions, 2345 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:55,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:55,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:44:55,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:56,087 INFO L124 PetriNetUnfolderBase]: 2729/6637 cut-off events. [2023-11-29 00:44:56,087 INFO L125 PetriNetUnfolderBase]: For 92396/97284 co-relation queries the response was YES. [2023-11-29 00:44:56,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48814 conditions, 6637 events. 2729/6637 cut-off events. For 92396/97284 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 61609 event pairs, 800 based on Foata normal form. 635/6676 useless extension candidates. Maximal degree in co-relation 48749. Up to 3144 conditions per place. [2023-11-29 00:44:56,175 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 69 selfloop transitions, 32 changer transitions 0/182 dead transitions. [2023-11-29 00:44:56,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 2817 flow [2023-11-29 00:44:56,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:56,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:44:56,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:44:56,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:44:56,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:44:56,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:44:56,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:56,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:44:56,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,178 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,178 INFO L175 Difference]: Start difference. First operand has 127 places, 165 transitions, 2345 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:44:56,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 2817 flow [2023-11-29 00:44:56,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 182 transitions, 2796 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:56,399 INFO L231 Difference]: Finished difference. Result has 129 places, 167 transitions, 2465 flow [2023-11-29 00:44:56,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2465, PETRI_PLACES=129, PETRI_TRANSITIONS=167} [2023-11-29 00:44:56,400 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 93 predicate places. [2023-11-29 00:44:56,400 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 167 transitions, 2465 flow [2023-11-29 00:44:56,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:56,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:56,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-29 00:44:56,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:56,601 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:44:56,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1347854058, now seen corresponding path program 1 times [2023-11-29 00:44:56,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:56,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668536121] [2023-11-29 00:44:56,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:56,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:56,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:56,602 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:44:56,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 00:44:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:56,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:44:56,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:56,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:56,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:56,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668536121] [2023-11-29 00:44:56,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668536121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:56,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:56,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:44:56,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85636173] [2023-11-29 00:44:56,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:56,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:44:56,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:56,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:44:56,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:44:56,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:44:56,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 167 transitions, 2465 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:56,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:44:56,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:45:00,015 INFO L124 PetriNetUnfolderBase]: 9606/17825 cut-off events. [2023-11-29 00:45:00,015 INFO L125 PetriNetUnfolderBase]: For 298070/298888 co-relation queries the response was YES. [2023-11-29 00:45:00,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134982 conditions, 17825 events. 9606/17825 cut-off events. For 298070/298888 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 149338 event pairs, 1403 based on Foata normal form. 225/17918 useless extension candidates. Maximal degree in co-relation 134917. Up to 7193 conditions per place. [2023-11-29 00:45:00,218 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 384 selfloop transitions, 54 changer transitions 0/447 dead transitions. [2023-11-29 00:45:00,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 447 transitions, 8410 flow [2023-11-29 00:45:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:45:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:45:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 321 transitions. [2023-11-29 00:45:00,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2023-11-29 00:45:00,220 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 321 transitions. [2023-11-29 00:45:00,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 321 transitions. [2023-11-29 00:45:00,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:45:00,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 321 transitions. [2023-11-29 00:45:00,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 21.4) internal successors, (321), 15 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:00,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 35.0) internal successors, (560), 16 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:00,222 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 35.0) internal successors, (560), 16 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:00,223 INFO L175 Difference]: Start difference. First operand has 129 places, 167 transitions, 2465 flow. Second operand 15 states and 321 transitions. [2023-11-29 00:45:00,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 447 transitions, 8410 flow [2023-11-29 00:45:01,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 447 transitions, 8267 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-11-29 00:45:01,049 INFO L231 Difference]: Finished difference. Result has 149 places, 190 transitions, 2919 flow [2023-11-29 00:45:01,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2919, PETRI_PLACES=149, PETRI_TRANSITIONS=190} [2023-11-29 00:45:01,050 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 113 predicate places. [2023-11-29 00:45:01,050 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 190 transitions, 2919 flow [2023-11-29 00:45:01,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:01,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:45:01,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:01,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 00:45:01,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:01,251 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:45:01,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:01,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1682770346, now seen corresponding path program 2 times [2023-11-29 00:45:01,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:01,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370428256] [2023-11-29 00:45:01,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:45:01,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:01,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:01,252 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:01,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 00:45:01,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:45:01,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:45:01,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:45:01,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:45:01,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:01,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:01,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370428256] [2023-11-29 00:45:01,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370428256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:01,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:01,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:45:01,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638616100] [2023-11-29 00:45:01,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:01,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:45:01,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:01,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:45:01,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:45:01,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:45:01,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 190 transitions, 2919 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:01,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:45:01,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:45:01,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:45:05,255 INFO L124 PetriNetUnfolderBase]: 10706/19796 cut-off events. [2023-11-29 00:45:05,255 INFO L125 PetriNetUnfolderBase]: For 405707/406665 co-relation queries the response was YES. [2023-11-29 00:45:05,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160634 conditions, 19796 events. 10706/19796 cut-off events. For 405707/406665 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 167805 event pairs, 1772 based on Foata normal form. 331/19972 useless extension candidates. Maximal degree in co-relation 160561. Up to 8087 conditions per place. [2023-11-29 00:45:05,505 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 341 selfloop transitions, 62 changer transitions 0/412 dead transitions. [2023-11-29 00:45:05,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 412 transitions, 7787 flow [2023-11-29 00:45:05,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:45:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:45:05,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 255 transitions. [2023-11-29 00:45:05,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2023-11-29 00:45:05,507 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 255 transitions. [2023-11-29 00:45:05,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 255 transitions. [2023-11-29 00:45:05,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:45:05,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 255 transitions. [2023-11-29 00:45:05,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.25) internal successors, (255), 12 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:05,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:05,509 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:05,509 INFO L175 Difference]: Start difference. First operand has 149 places, 190 transitions, 2919 flow. Second operand 12 states and 255 transitions. [2023-11-29 00:45:05,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 412 transitions, 7787 flow [2023-11-29 00:45:07,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 412 transitions, 7571 flow, removed 94 selfloop flow, removed 5 redundant places. [2023-11-29 00:45:07,572 INFO L231 Difference]: Finished difference. Result has 162 places, 211 transitions, 3317 flow [2023-11-29 00:45:07,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3317, PETRI_PLACES=162, PETRI_TRANSITIONS=211} [2023-11-29 00:45:07,573 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 126 predicate places. [2023-11-29 00:45:07,573 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 211 transitions, 3317 flow [2023-11-29 00:45:07,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:07,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:45:07,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:07,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-29 00:45:07,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:07,774 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:45:07,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:07,774 INFO L85 PathProgramCache]: Analyzing trace with hash 481426206, now seen corresponding path program 3 times [2023-11-29 00:45:07,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:07,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554491489] [2023-11-29 00:45:07,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:45:07,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:07,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:07,776 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:07,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-29 00:45:07,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 00:45:07,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:45:07,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:45:07,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:45:07,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:07,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:07,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554491489] [2023-11-29 00:45:07,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554491489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:07,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:07,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:45:07,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617401914] [2023-11-29 00:45:07,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:07,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:45:07,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:07,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:45:07,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:45:07,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:45:07,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 211 transitions, 3317 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:07,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:45:07,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:45:07,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:45:12,821 INFO L124 PetriNetUnfolderBase]: 13037/24330 cut-off events. [2023-11-29 00:45:12,821 INFO L125 PetriNetUnfolderBase]: For 532736/534156 co-relation queries the response was YES. [2023-11-29 00:45:13,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204320 conditions, 24330 events. 13037/24330 cut-off events. For 532736/534156 co-relation queries the response was YES. Maximal size of possible extension queue 977. Compared 215360 event pairs, 3113 based on Foata normal form. 403/24526 useless extension candidates. Maximal degree in co-relation 204239. Up to 10246 conditions per place. [2023-11-29 00:45:13,219 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 362 selfloop transitions, 50 changer transitions 0/421 dead transitions. [2023-11-29 00:45:13,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 421 transitions, 8027 flow [2023-11-29 00:45:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:45:13,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:45:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2023-11-29 00:45:13,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2023-11-29 00:45:13,220 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 248 transitions. [2023-11-29 00:45:13,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 248 transitions. [2023-11-29 00:45:13,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:45:13,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 248 transitions. [2023-11-29 00:45:13,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:13,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:13,223 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:13,223 INFO L175 Difference]: Start difference. First operand has 162 places, 211 transitions, 3317 flow. Second operand 12 states and 248 transitions. [2023-11-29 00:45:13,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 421 transitions, 8027 flow [2023-11-29 00:45:15,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 421 transitions, 7948 flow, removed 34 selfloop flow, removed 2 redundant places. [2023-11-29 00:45:15,915 INFO L231 Difference]: Finished difference. Result has 176 places, 223 transitions, 3650 flow [2023-11-29 00:45:15,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3650, PETRI_PLACES=176, PETRI_TRANSITIONS=223} [2023-11-29 00:45:15,916 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 140 predicate places. [2023-11-29 00:45:15,916 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 223 transitions, 3650 flow [2023-11-29 00:45:15,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:15,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:45:15,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:15,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-11-29 00:45:16,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:16,117 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:45:16,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:16,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1772587832, now seen corresponding path program 4 times [2023-11-29 00:45:16,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:16,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046452431] [2023-11-29 00:45:16,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:45:16,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:16,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:16,118 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:16,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-29 00:45:16,167 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:45:16,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:45:16,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:45:16,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:45:16,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:16,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:16,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046452431] [2023-11-29 00:45:16,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046452431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:16,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:16,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:45:16,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282514307] [2023-11-29 00:45:16,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:16,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:45:16,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:16,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:45:16,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:45:16,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:45:16,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 223 transitions, 3650 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:16,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:45:16,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:45:16,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:45:21,832 INFO L124 PetriNetUnfolderBase]: 14032/26268 cut-off events. [2023-11-29 00:45:21,832 INFO L125 PetriNetUnfolderBase]: For 642603/643761 co-relation queries the response was YES. [2023-11-29 00:45:22,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226729 conditions, 26268 events. 14032/26268 cut-off events. For 642603/643761 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 236220 event pairs, 3183 based on Foata normal form. 204/26273 useless extension candidates. Maximal degree in co-relation 226642. Up to 11052 conditions per place. [2023-11-29 00:45:22,194 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 312 selfloop transitions, 65 changer transitions 0/386 dead transitions. [2023-11-29 00:45:22,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 386 transitions, 7394 flow [2023-11-29 00:45:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:45:22,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:45:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2023-11-29 00:45:22,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6025974025974026 [2023-11-29 00:45:22,196 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 232 transitions. [2023-11-29 00:45:22,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 232 transitions. [2023-11-29 00:45:22,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:45:22,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 232 transitions. [2023-11-29 00:45:22,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.09090909090909) internal successors, (232), 11 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:22,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:22,198 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:22,198 INFO L175 Difference]: Start difference. First operand has 176 places, 223 transitions, 3650 flow. Second operand 11 states and 232 transitions. [2023-11-29 00:45:22,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 386 transitions, 7394 flow [2023-11-29 00:45:25,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 386 transitions, 7295 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-11-29 00:45:25,543 INFO L231 Difference]: Finished difference. Result has 186 places, 230 transitions, 3975 flow [2023-11-29 00:45:25,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3561, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3975, PETRI_PLACES=186, PETRI_TRANSITIONS=230} [2023-11-29 00:45:25,544 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 150 predicate places. [2023-11-29 00:45:25,544 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 230 transitions, 3975 flow [2023-11-29 00:45:25,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:25,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:45:25,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:25,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-11-29 00:45:25,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:25,745 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:45:25,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:25,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1053903928, now seen corresponding path program 1 times [2023-11-29 00:45:25,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:25,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667791869] [2023-11-29 00:45:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:25,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:25,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:25,746 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:25,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-29 00:45:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:25,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:45:25,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:25,951 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_47| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_55| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_55|) (_ bv0 1)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_55| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_47|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_55| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_47| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 00:45:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:45:25,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:25,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:25,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667791869] [2023-11-29 00:45:25,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667791869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:25,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:25,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:45:25,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801752625] [2023-11-29 00:45:25,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:25,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:45:25,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:25,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:45:25,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:45:25,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:45:25,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 230 transitions, 3975 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:25,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:45:25,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:45:25,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:45:29,617 INFO L124 PetriNetUnfolderBase]: 7074/16892 cut-off events. [2023-11-29 00:45:29,617 INFO L125 PetriNetUnfolderBase]: For 390852/406272 co-relation queries the response was YES. [2023-11-29 00:45:29,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143728 conditions, 16892 events. 7074/16892 cut-off events. For 390852/406272 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 182684 event pairs, 2167 based on Foata normal form. 2447/17969 useless extension candidates. Maximal degree in co-relation 143634. Up to 7878 conditions per place. [2023-11-29 00:45:29,875 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 92 selfloop transitions, 14 changer transitions 0/250 dead transitions. [2023-11-29 00:45:29,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 250 transitions, 4503 flow [2023-11-29 00:45:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:45:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:45:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:45:29,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:45:29,876 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:45:29,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:45:29,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:45:29,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:45:29,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:29,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:29,877 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:29,877 INFO L175 Difference]: Start difference. First operand has 186 places, 230 transitions, 3975 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:45:29,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 250 transitions, 4503 flow [2023-11-29 00:45:31,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 250 transitions, 4381 flow, removed 44 selfloop flow, removed 5 redundant places. [2023-11-29 00:45:31,571 INFO L231 Difference]: Finished difference. Result has 185 places, 232 transitions, 3944 flow [2023-11-29 00:45:31,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3853, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3944, PETRI_PLACES=185, PETRI_TRANSITIONS=232} [2023-11-29 00:45:31,572 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 149 predicate places. [2023-11-29 00:45:31,572 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 232 transitions, 3944 flow [2023-11-29 00:45:31,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:31,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:45:31,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:31,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-11-29 00:45:31,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:31,773 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:45:31,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:31,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1218072722, now seen corresponding path program 2 times [2023-11-29 00:45:31,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:31,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414932996] [2023-11-29 00:45:31,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:45:31,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:31,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:31,775 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:31,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-29 00:45:31,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:45:31,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:45:31,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:45:31,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:31,953 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_48| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_56| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_56| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_48| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_56|) (_ bv0 1)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_56| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_48|) (_ bv0 1)))) is different from true [2023-11-29 00:45:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:45:31,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:31,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:31,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414932996] [2023-11-29 00:45:31,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414932996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:31,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:31,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:45:31,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501017640] [2023-11-29 00:45:31,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:31,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:45:31,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:32,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:45:32,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:45:32,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:45:32,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 232 transitions, 3944 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:32,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:45:32,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:45:32,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:45:35,521 INFO L124 PetriNetUnfolderBase]: 7150/17135 cut-off events. [2023-11-29 00:45:35,521 INFO L125 PetriNetUnfolderBase]: For 407392/422897 co-relation queries the response was YES. [2023-11-29 00:45:35,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147420 conditions, 17135 events. 7150/17135 cut-off events. For 407392/422897 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 186276 event pairs, 2224 based on Foata normal form. 2247/17986 useless extension candidates. Maximal degree in co-relation 147324. Up to 7912 conditions per place. [2023-11-29 00:45:35,782 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 88 selfloop transitions, 20 changer transitions 0/252 dead transitions. [2023-11-29 00:45:35,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 252 transitions, 4484 flow [2023-11-29 00:45:35,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:45:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:45:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:45:35,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:45:35,783 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:45:35,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:45:35,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:45:35,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:45:35,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:35,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:35,784 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:35,784 INFO L175 Difference]: Start difference. First operand has 185 places, 232 transitions, 3944 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:45:35,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 252 transitions, 4484 flow [2023-11-29 00:45:37,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 252 transitions, 4463 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 00:45:37,645 INFO L231 Difference]: Finished difference. Result has 187 places, 234 transitions, 4036 flow [2023-11-29 00:45:37,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3923, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4036, PETRI_PLACES=187, PETRI_TRANSITIONS=234} [2023-11-29 00:45:37,646 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 151 predicate places. [2023-11-29 00:45:37,646 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 234 transitions, 4036 flow [2023-11-29 00:45:37,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:37,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:45:37,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:37,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-11-29 00:45:37,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:37,847 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:45:37,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:37,848 INFO L85 PathProgramCache]: Analyzing trace with hash 642476958, now seen corresponding path program 3 times [2023-11-29 00:45:37,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:37,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412314901] [2023-11-29 00:45:37,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:45:37,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:37,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:37,849 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:37,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-29 00:45:37,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 00:45:37,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:45:37,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:45:37,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:38,060 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_49| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_57| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_57| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_49|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_57| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_49| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_57|) (_ bv0 1)))) is different from true [2023-11-29 00:45:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:45:38,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:38,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:38,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412314901] [2023-11-29 00:45:38,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412314901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:38,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:38,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:45:38,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862336035] [2023-11-29 00:45:38,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:38,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:45:38,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:45:38,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:45:38,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:45:38,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 234 transitions, 4036 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:38,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:45:38,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:45:38,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:45:41,992 INFO L124 PetriNetUnfolderBase]: 7289/17476 cut-off events. [2023-11-29 00:45:41,993 INFO L125 PetriNetUnfolderBase]: For 419385/435448 co-relation queries the response was YES. [2023-11-29 00:45:42,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151811 conditions, 17476 events. 7289/17476 cut-off events. For 419385/435448 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 190579 event pairs, 2312 based on Foata normal form. 2225/18253 useless extension candidates. Maximal degree in co-relation 151714. Up to 8044 conditions per place. [2023-11-29 00:45:42,261 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 90 selfloop transitions, 20 changer transitions 0/254 dead transitions. [2023-11-29 00:45:42,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 254 transitions, 4588 flow [2023-11-29 00:45:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:45:42,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:45:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:45:42,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:45:42,262 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:45:42,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:45:42,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:45:42,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:45:42,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:42,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:42,264 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:42,264 INFO L175 Difference]: Start difference. First operand has 187 places, 234 transitions, 4036 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:45:42,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 254 transitions, 4588 flow [2023-11-29 00:45:44,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 254 transitions, 4553 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-29 00:45:44,027 INFO L231 Difference]: Finished difference. Result has 189 places, 236 transitions, 4122 flow [2023-11-29 00:45:44,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4009, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4122, PETRI_PLACES=189, PETRI_TRANSITIONS=236} [2023-11-29 00:45:44,028 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 153 predicate places. [2023-11-29 00:45:44,028 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 236 transitions, 4122 flow [2023-11-29 00:45:44,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:44,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:45:44,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:44,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-11-29 00:45:44,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:44,228 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:45:44,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:44,229 INFO L85 PathProgramCache]: Analyzing trace with hash -681643506, now seen corresponding path program 4 times [2023-11-29 00:45:44,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:44,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113297562] [2023-11-29 00:45:44,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:45:44,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:44,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:44,230 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:44,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-29 00:45:44,301 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:45:44,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:45:44,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:45:44,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:44,398 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_58| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_50| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_58| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_50| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_58|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_58| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_50|) (_ bv0 1)))) is different from true [2023-11-29 00:45:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:45:44,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:44,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:44,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113297562] [2023-11-29 00:45:44,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113297562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:44,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:44,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:45:44,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113641286] [2023-11-29 00:45:44,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:44,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:45:44,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:44,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:45:44,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:45:44,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 00:45:44,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 236 transitions, 4122 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:44,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:45:44,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 00:45:44,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:45:48,092 INFO L124 PetriNetUnfolderBase]: 7086/17146 cut-off events. [2023-11-29 00:45:48,092 INFO L125 PetriNetUnfolderBase]: For 431697/447080 co-relation queries the response was YES. [2023-11-29 00:45:48,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150426 conditions, 17146 events. 7086/17146 cut-off events. For 431697/447080 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 187405 event pairs, 2175 based on Foata normal form. 2207/17967 useless extension candidates. Maximal degree in co-relation 150328. Up to 7763 conditions per place. [2023-11-29 00:45:48,357 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 86 selfloop transitions, 26 changer transitions 0/256 dead transitions. [2023-11-29 00:45:48,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 256 transitions, 4678 flow [2023-11-29 00:45:48,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:45:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:45:48,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 00:45:48,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 00:45:48,358 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 00:45:48,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 00:45:48,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:45:48,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 00:45:48,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:48,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:48,359 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:48,359 INFO L175 Difference]: Start difference. First operand has 189 places, 236 transitions, 4122 flow. Second operand 4 states and 73 transitions. [2023-11-29 00:45:48,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 256 transitions, 4678 flow [2023-11-29 00:45:50,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 256 transitions, 4657 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:45:50,190 INFO L231 Difference]: Finished difference. Result has 191 places, 238 transitions, 4236 flow [2023-11-29 00:45:50,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4101, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4236, PETRI_PLACES=191, PETRI_TRANSITIONS=238} [2023-11-29 00:45:50,190 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 155 predicate places. [2023-11-29 00:45:50,190 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 238 transitions, 4236 flow [2023-11-29 00:45:50,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:50,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:45:50,191 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:50,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-11-29 00:45:50,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:50,391 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:45:50,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1140934613, now seen corresponding path program 1 times [2023-11-29 00:45:50,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:50,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737200382] [2023-11-29 00:45:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:50,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:50,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:50,393 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:45:50,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-29 00:45:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:50,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:45:50,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:45:50,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:45:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:45:50,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:50,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737200382] [2023-11-29 00:45:50,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737200382] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:45:50,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:45:50,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 00:45:50,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170310509] [2023-11-29 00:45:50,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:45:50,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:45:50,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:50,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:45:50,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:45:50,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:45:50,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 238 transitions, 4236 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:50,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:45:50,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:45:50,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:45:58,832 INFO L124 PetriNetUnfolderBase]: 16921/31855 cut-off events. [2023-11-29 00:45:58,832 INFO L125 PetriNetUnfolderBase]: For 1032332/1032568 co-relation queries the response was YES. [2023-11-29 00:45:59,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299707 conditions, 31855 events. 16921/31855 cut-off events. For 1032332/1032568 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 297737 event pairs, 617 based on Foata normal form. 191/32009 useless extension candidates. Maximal degree in co-relation 299609. Up to 13344 conditions per place. [2023-11-29 00:45:59,556 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 603 selfloop transitions, 121 changer transitions 0/733 dead transitions. [2023-11-29 00:45:59,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 733 transitions, 16410 flow [2023-11-29 00:45:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 00:45:59,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 00:45:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 497 transitions. [2023-11-29 00:45:59,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2023-11-29 00:45:59,559 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 497 transitions. [2023-11-29 00:45:59,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 497 transitions. [2023-11-29 00:45:59,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:45:59,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 497 transitions. [2023-11-29 00:45:59,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 20.708333333333332) internal successors, (497), 24 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:59,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 35.0) internal successors, (875), 25 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:59,562 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 35.0) internal successors, (875), 25 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:59,562 INFO L175 Difference]: Start difference. First operand has 191 places, 238 transitions, 4236 flow. Second operand 24 states and 497 transitions. [2023-11-29 00:45:59,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 733 transitions, 16410 flow [2023-11-29 00:46:06,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 733 transitions, 16129 flow, removed 76 selfloop flow, removed 2 redundant places. [2023-11-29 00:46:06,051 INFO L231 Difference]: Finished difference. Result has 220 places, 273 transitions, 5481 flow [2023-11-29 00:46:06,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4197, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=5481, PETRI_PLACES=220, PETRI_TRANSITIONS=273} [2023-11-29 00:46:06,051 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 184 predicate places. [2023-11-29 00:46:06,051 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 273 transitions, 5481 flow [2023-11-29 00:46:06,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:06,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:46:06,052 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:46:06,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-11-29 00:46:06,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:06,252 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:46:06,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:46:06,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1871951362, now seen corresponding path program 1 times [2023-11-29 00:46:06,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:46:06,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033409877] [2023-11-29 00:46:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:46:06,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:06,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:46:06,254 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:46:06,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-11-29 00:46:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:46:06,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:46:06,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:46:06,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:46:06,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:46:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:46:06,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:46:06,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033409877] [2023-11-29 00:46:06,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033409877] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:46:06,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:46:06,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 00:46:06,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099201845] [2023-11-29 00:46:06,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:46:06,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:46:06,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:46:06,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:46:06,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:46:06,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:46:06,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 273 transitions, 5481 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:06,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:46:06,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:46:06,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:46:15,598 INFO L124 PetriNetUnfolderBase]: 20670/38631 cut-off events. [2023-11-29 00:46:15,598 INFO L125 PetriNetUnfolderBase]: For 1415167/1415403 co-relation queries the response was YES. [2023-11-29 00:46:16,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377592 conditions, 38631 events. 20670/38631 cut-off events. For 1415167/1415403 co-relation queries the response was YES. Maximal size of possible extension queue 1665. Compared 368349 event pairs, 4469 based on Foata normal form. 291/38871 useless extension candidates. Maximal degree in co-relation 377486. Up to 16141 conditions per place. [2023-11-29 00:46:16,325 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 659 selfloop transitions, 107 changer transitions 0/775 dead transitions. [2023-11-29 00:46:16,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 775 transitions, 18885 flow [2023-11-29 00:46:16,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 00:46:16,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 00:46:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 469 transitions. [2023-11-29 00:46:16,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090909090909091 [2023-11-29 00:46:16,327 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 469 transitions. [2023-11-29 00:46:16,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 469 transitions. [2023-11-29 00:46:16,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:46:16,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 469 transitions. [2023-11-29 00:46:16,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 21.318181818181817) internal successors, (469), 22 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:16,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 35.0) internal successors, (805), 23 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:16,329 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 35.0) internal successors, (805), 23 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:16,330 INFO L175 Difference]: Start difference. First operand has 220 places, 273 transitions, 5481 flow. Second operand 22 states and 469 transitions. [2023-11-29 00:46:16,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 775 transitions, 18885 flow [2023-11-29 00:46:33,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 775 transitions, 17552 flow, removed 639 selfloop flow, removed 9 redundant places. [2023-11-29 00:46:33,204 INFO L231 Difference]: Finished difference. Result has 246 places, 319 transitions, 6189 flow [2023-11-29 00:46:33,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4810, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6189, PETRI_PLACES=246, PETRI_TRANSITIONS=319} [2023-11-29 00:46:33,205 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 210 predicate places. [2023-11-29 00:46:33,205 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 319 transitions, 6189 flow [2023-11-29 00:46:33,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:33,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:46:33,205 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:46:33,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-11-29 00:46:33,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:33,406 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:46:33,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:46:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash 446770328, now seen corresponding path program 2 times [2023-11-29 00:46:33,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:46:33,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163426842] [2023-11-29 00:46:33,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:46:33,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:33,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:46:33,407 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:46:33,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-11-29 00:46:33,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:46:33,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:46:33,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:46:33,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:46:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:46:33,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:46:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:46:33,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:46:33,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163426842] [2023-11-29 00:46:33,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163426842] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:46:33,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:46:33,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 00:46:33,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302913512] [2023-11-29 00:46:33,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:46:33,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:46:33,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:46:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:46:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:46:33,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:46:33,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 319 transitions, 6189 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:33,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:46:33,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:46:33,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:46:47,449 INFO L124 PetriNetUnfolderBase]: 24915/46641 cut-off events. [2023-11-29 00:46:47,449 INFO L125 PetriNetUnfolderBase]: For 2181012/2181398 co-relation queries the response was YES. [2023-11-29 00:46:47,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484846 conditions, 46641 events. 24915/46641 cut-off events. For 2181012/2181398 co-relation queries the response was YES. Maximal size of possible extension queue 2052. Compared 457679 event pairs, 1246 based on Foata normal form. 251/46816 useless extension candidates. Maximal degree in co-relation 484729. Up to 19942 conditions per place. [2023-11-29 00:46:48,422 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 875 selfloop transitions, 202 changer transitions 0/1086 dead transitions. [2023-11-29 00:46:48,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1086 transitions, 26317 flow [2023-11-29 00:46:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 00:46:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 00:46:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 700 transitions. [2023-11-29 00:46:48,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2023-11-29 00:46:48,425 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 700 transitions. [2023-11-29 00:46:48,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 700 transitions. [2023-11-29 00:46:48,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:46:48,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 700 transitions. [2023-11-29 00:46:48,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 21.21212121212121) internal successors, (700), 33 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:48,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 35.0) internal successors, (1190), 34 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:48,429 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 35.0) internal successors, (1190), 34 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:48,429 INFO L175 Difference]: Start difference. First operand has 246 places, 319 transitions, 6189 flow. Second operand 33 states and 700 transitions. [2023-11-29 00:46:48,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1086 transitions, 26317 flow [2023-11-29 00:47:12,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 1086 transitions, 25814 flow, removed 225 selfloop flow, removed 6 redundant places. [2023-11-29 00:47:12,708 INFO L231 Difference]: Finished difference. Result has 294 places, 390 transitions, 8479 flow [2023-11-29 00:47:12,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5741, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=8479, PETRI_PLACES=294, PETRI_TRANSITIONS=390} [2023-11-29 00:47:12,709 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 258 predicate places. [2023-11-29 00:47:12,709 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 390 transitions, 8479 flow [2023-11-29 00:47:12,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:12,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:47:12,709 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:47:12,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-11-29 00:47:12,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:47:12,910 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:47:12,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:47:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash -84139368, now seen corresponding path program 3 times [2023-11-29 00:47:12,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:47:12,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126664458] [2023-11-29 00:47:12,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:47:12,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:47:12,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:47:12,911 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:47:12,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-11-29 00:47:12,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:47:12,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:47:12,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:47:12,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:47:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:47:13,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:47:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:47:13,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:47:13,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126664458] [2023-11-29 00:47:13,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126664458] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:47:13,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:47:13,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 00:47:13,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611481555] [2023-11-29 00:47:13,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:47:13,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:47:13,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:47:13,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:47:13,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:47:13,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 00:47:13,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 390 transitions, 8479 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:13,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:47:13,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 00:47:13,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:47:29,201 INFO L124 PetriNetUnfolderBase]: 26417/49302 cut-off events. [2023-11-29 00:47:29,201 INFO L125 PetriNetUnfolderBase]: For 3085433/3085843 co-relation queries the response was YES. [2023-11-29 00:47:29,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551692 conditions, 49302 events. 26417/49302 cut-off events. For 3085433/3085843 co-relation queries the response was YES. Maximal size of possible extension queue 2121. Compared 484966 event pairs, 1328 based on Foata normal form. 540/49756 useless extension candidates. Maximal degree in co-relation 551552. Up to 21362 conditions per place. [2023-11-29 00:47:30,383 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 803 selfloop transitions, 231 changer transitions 0/1043 dead transitions. [2023-11-29 00:47:30,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 1043 transitions, 26476 flow [2023-11-29 00:47:30,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 00:47:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 00:47:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 581 transitions. [2023-11-29 00:47:30,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2023-11-29 00:47:30,386 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 581 transitions. [2023-11-29 00:47:30,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 581 transitions. [2023-11-29 00:47:30,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:47:30,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 581 transitions. [2023-11-29 00:47:30,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 20.75) internal successors, (581), 28 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:30,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 35.0) internal successors, (1015), 29 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:30,390 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 35.0) internal successors, (1015), 29 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:30,390 INFO L175 Difference]: Start difference. First operand has 294 places, 390 transitions, 8479 flow. Second operand 28 states and 581 transitions. [2023-11-29 00:47:30,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 1043 transitions, 26476 flow [2023-11-29 00:48:17,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 1043 transitions, 24895 flow, removed 766 selfloop flow, removed 6 redundant places. [2023-11-29 00:48:17,349 INFO L231 Difference]: Finished difference. Result has 330 places, 449 transitions, 9809 flow [2023-11-29 00:48:17,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7656, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=9809, PETRI_PLACES=330, PETRI_TRANSITIONS=449} [2023-11-29 00:48:17,350 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 294 predicate places. [2023-11-29 00:48:17,350 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 449 transitions, 9809 flow [2023-11-29 00:48:17,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:17,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:48:17,350 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:48:17,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2023-11-29 00:48:17,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:48:17,550 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:48:17,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:17,551 INFO L85 PathProgramCache]: Analyzing trace with hash -410622792, now seen corresponding path program 2 times [2023-11-29 00:48:17,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:48:17,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446133516] [2023-11-29 00:48:17,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:48:17,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:48:17,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:48:17,552 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:48:17,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-11-29 00:48:17,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:48:17,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:48:17,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:48:17,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:48:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:48:17,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:48:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:48:17,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:48:17,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446133516] [2023-11-29 00:48:17,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446133516] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:48:17,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:48:17,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 00:48:17,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198046951] [2023-11-29 00:48:17,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:48:17,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:48:17,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:48:17,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:48:17,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:48:17,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 00:48:17,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 449 transitions, 9809 flow. Second operand has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:17,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:48:17,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 00:48:17,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:49:00,861 INFO L124 PetriNetUnfolderBase]: 54252/116868 cut-off events. [2023-11-29 00:49:00,861 INFO L125 PetriNetUnfolderBase]: For 7386813/7449710 co-relation queries the response was YES. [2023-11-29 00:49:03,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1251963 conditions, 116868 events. 54252/116868 cut-off events. For 7386813/7449710 co-relation queries the response was YES. Maximal size of possible extension queue 3419. Compared 1443974 event pairs, 7485 based on Foata normal form. 21681/135410 useless extension candidates. Maximal degree in co-relation 1251809. Up to 48781 conditions per place. [2023-11-29 00:49:04,167 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 432 selfloop transitions, 60 changer transitions 0/848 dead transitions. [2023-11-29 00:49:04,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 848 transitions, 19447 flow [2023-11-29 00:49:04,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:49:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:49:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 321 transitions. [2023-11-29 00:49:04,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2023-11-29 00:49:04,169 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 321 transitions. [2023-11-29 00:49:04,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 321 transitions. [2023-11-29 00:49:04,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:49:04,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 321 transitions. [2023-11-29 00:49:04,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:04,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:04,171 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:04,171 INFO L175 Difference]: Start difference. First operand has 330 places, 449 transitions, 9809 flow. Second operand 12 states and 321 transitions. [2023-11-29 00:49:04,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 848 transitions, 19447 flow [2023-11-29 00:50:46,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 848 transitions, 18642 flow, removed 386 selfloop flow, removed 6 redundant places. [2023-11-29 00:50:46,937 INFO L231 Difference]: Finished difference. Result has 342 places, 480 transitions, 10056 flow [2023-11-29 00:50:46,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=9148, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10056, PETRI_PLACES=342, PETRI_TRANSITIONS=480} [2023-11-29 00:50:46,938 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 306 predicate places. [2023-11-29 00:50:46,938 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 480 transitions, 10056 flow [2023-11-29 00:50:46,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:46,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:46,938 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:50:46,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-11-29 00:50:47,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:50:47,139 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 00:50:47,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:47,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1475675144, now seen corresponding path program 2 times [2023-11-29 00:50:47,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:50:47,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089535135] [2023-11-29 00:50:47,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:50:47,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:50:47,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:50:47,141 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:50:47,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31f62c0-b905-4b01-88ae-a6ef7adf2241/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-11-29 00:50:47,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:50:47,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:50:47,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:50:47,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:50:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:50:47,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:50:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:50:47,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:50:47,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089535135] [2023-11-29 00:50:47,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089535135] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:50:47,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:50:47,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 00:50:47,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505980644] [2023-11-29 00:50:47,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:50:47,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:50:47,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:50:47,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:50:47,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:50:47,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 00:50:47,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 480 transitions, 10056 flow. Second operand has 12 states, 12 states have (on average 19.25) internal successors, (231), 12 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:47,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:47,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 00:50:47,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand