./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu --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 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:18,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:18,751 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 08:01:18,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:18,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:18,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:18,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:18,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:18,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:18,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:18,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:18,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:18,820 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:18,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:18,823 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:01:18,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:18,824 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:01:18,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:18,825 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:01:18,825 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:01:18,826 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:01:18,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:18,827 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:01:18,827 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:01:18,828 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:01:18,828 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:18,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:18,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:18,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:18,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:18,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:18,834 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:18,834 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:01:18,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:01:18,835 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:18,835 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:18,835 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:18,836 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:18,836 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_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2023-11-19 08:01:19,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:19,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:19,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:19,230 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:19,231 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:19,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/triangular-2.i [2023-11-19 08:01:22,401 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:22,717 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:22,718 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/sv-benchmarks/c/pthread/triangular-2.i [2023-11-19 08:01:22,740 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/data/eb4aefdb0/ef8a5e51e2b34dafb2e3b6b686d4b039/FLAG37236d0a1 [2023-11-19 08:01:22,755 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/data/eb4aefdb0/ef8a5e51e2b34dafb2e3b6b686d4b039 [2023-11-19 08:01:22,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:22,760 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:22,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:22,762 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:22,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:22,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:22" (1/1) ... [2023-11-19 08:01:22,769 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f660e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:22, skipping insertion in model container [2023-11-19 08:01:22,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:22" (1/1) ... [2023-11-19 08:01:22,814 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:23,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:23,252 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:23,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:23,362 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:23,363 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:23,371 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:23,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:23 WrapperNode [2023-11-19 08:01:23,372 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:23,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:23,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:23,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:23,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:23" (1/1) ... [2023-11-19 08:01:23,417 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:23" (1/1) ... [2023-11-19 08:01:23,446 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-11-19 08:01:23,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:23,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:23,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:23,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:23,459 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:23" (1/1) ... [2023-11-19 08:01:23,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:23" (1/1) ... [2023-11-19 08:01:23,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:23" (1/1) ... [2023-11-19 08:01:23,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:23" (1/1) ... [2023-11-19 08:01:23,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:23" (1/1) ... [2023-11-19 08:01:23,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:23" (1/1) ... [2023-11-19 08:01:23,498 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:23" (1/1) ... [2023-11-19 08:01:23,505 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:23" (1/1) ... [2023-11-19 08:01:23,508 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:23,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:23,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:23,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:23,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:23" (1/1) ... [2023-11-19 08:01:23,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:23,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:23,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:23,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 08:01:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 08:01:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 08:01:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 08:01:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:01:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:01:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:01:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:01:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:01:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:01:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:23,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:23,610 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:01:23,772 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:23,774 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:01:24,026 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:01:24,036 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:01:24,036 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:01:24,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:24 BoogieIcfgContainer [2023-11-19 08:01:24,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:01:24,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:01:24,043 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:01:24,047 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:01:24,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:22" (1/3) ... [2023-11-19 08:01:24,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c774af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:24, skipping insertion in model container [2023-11-19 08:01:24,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:23" (2/3) ... [2023-11-19 08:01:24,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c774af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:24, skipping insertion in model container [2023-11-19 08:01:24,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:24" (3/3) ... [2023-11-19 08:01:24,050 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2023-11-19 08:01:24,101 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:01:24,101 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 08:01:24,102 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:01:24,191 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:01:24,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 172 flow [2023-11-19 08:01:24,273 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-11-19 08:01:24,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:24,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 80 events. 6/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-19 08:01:24,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 172 flow [2023-11-19 08:01:24,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 80 transitions, 166 flow [2023-11-19 08:01:24,290 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:24,299 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 80 transitions, 166 flow [2023-11-19 08:01:24,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 80 transitions, 166 flow [2023-11-19 08:01:24,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 166 flow [2023-11-19 08:01:24,327 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-11-19 08:01:24,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:24,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 80 events. 6/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-19 08:01:24,331 INFO L119 LiptonReduction]: Number of co-enabled transitions 1728 [2023-11-19 08:01:27,056 INFO L134 LiptonReduction]: Checked pairs total: 1540 [2023-11-19 08:01:27,056 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-11-19 08:01:27,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:01:27,095 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;@78d992c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:01:27,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 08:01:27,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:01:27,099 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 08:01:27,099 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:27,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:27,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:01:27,100 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)] === [2023-11-19 08:01:27,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:27,106 INFO L85 PathProgramCache]: Analyzing trace with hash 330, now seen corresponding path program 1 times [2023-11-19 08:01:27,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:27,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990015125] [2023-11-19 08:01:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:27,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:27,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:27,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990015125] [2023-11-19 08:01:27,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990015125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:27,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:27,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:01:27,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205271920] [2023-11-19 08:01:27,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:27,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:01:27,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:27,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:01:27,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:01:27,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 167 [2023-11-19 08:01:27,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:27,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:27,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 167 [2023-11-19 08:01:27,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:27,342 INFO L124 PetriNetUnfolderBase]: 112/179 cut-off events. [2023-11-19 08:01:27,342 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:01:27,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 457 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-11-19 08:01:27,346 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-11-19 08:01:27,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-11-19 08:01:27,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:01:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:01:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 170 transitions. [2023-11-19 08:01:27,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089820359281437 [2023-11-19 08:01:27,362 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 170 transitions. [2023-11-19 08:01:27,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 170 transitions. [2023-11-19 08:01:27,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:27,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 170 transitions. [2023-11-19 08:01:27,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:27,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:27,375 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:27,377 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 170 transitions. [2023-11-19 08:01:27,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-11-19 08:01:27,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:27,382 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-11-19 08:01:27,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-11-19 08:01:27,390 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-19 08:01:27,390 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-11-19 08:01:27,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:27,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:27,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:01:27,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:01:27,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 08:01:27,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:27,393 INFO L85 PathProgramCache]: Analyzing trace with hash 325970, now seen corresponding path program 1 times [2023-11-19 08:01:27,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:27,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168940552] [2023-11-19 08:01:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:27,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:27,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:27,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168940552] [2023-11-19 08:01:27,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168940552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:27,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:27,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:01:27,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613575910] [2023-11-19 08:01:27,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:27,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:27,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:27,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 08:01:27,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:27,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:27,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 08:01:27,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:27,742 INFO L124 PetriNetUnfolderBase]: 91/146 cut-off events. [2023-11-19 08:01:27,743 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:27,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 355 event pairs, 34 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 92 conditions per place. [2023-11-19 08:01:27,748 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-11-19 08:01:27,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-11-19 08:01:27,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:27,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:01:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-11-19 08:01:27,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44510978043912175 [2023-11-19 08:01:27,760 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-11-19 08:01:27,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-11-19 08:01:27,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:27,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-11-19 08:01:27,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 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) [2023-11-19 08:01:27,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:27,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:27,770 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 223 transitions. [2023-11-19 08:01:27,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-11-19 08:01:27,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:01:27,776 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-11-19 08:01:27,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-11-19 08:01:27,779 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-19 08:01:27,779 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-11-19 08:01:27,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:27,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:27,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:01:27,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:01:27,783 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)] === [2023-11-19 08:01:27,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash 325968, now seen corresponding path program 1 times [2023-11-19 08:01:27,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:27,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138145166] [2023-11-19 08:01:27,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:27,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:27,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:27,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138145166] [2023-11-19 08:01:27,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138145166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:27,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:27,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:01:27,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069195095] [2023-11-19 08:01:27,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:27,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:27,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:27,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:27,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:27,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 167 [2023-11-19 08:01:27,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:27,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:27,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 167 [2023-11-19 08:01:27,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:28,017 INFO L124 PetriNetUnfolderBase]: 88/140 cut-off events. [2023-11-19 08:01:28,017 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:01:28,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 331 event pairs, 44 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 298. Up to 113 conditions per place. [2023-11-19 08:01:28,019 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-11-19 08:01:28,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-11-19 08:01:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:01:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-11-19 08:01:28,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46107784431137727 [2023-11-19 08:01:28,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-11-19 08:01:28,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-11-19 08:01:28,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:28,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-11-19 08:01:28,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 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) [2023-11-19 08:01:28,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,029 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 231 transitions. [2023-11-19 08:01:28,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-11-19 08:01:28,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:28,031 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-11-19 08:01:28,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-11-19 08:01:28,033 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-11-19 08:01:28,033 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-11-19 08:01:28,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:28,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:01:28,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:01:28,039 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 08:01:28,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:28,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1121223677, now seen corresponding path program 1 times [2023-11-19 08:01:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:28,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490963678] [2023-11-19 08:01:28,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:28,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:28,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:28,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490963678] [2023-11-19 08:01:28,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490963678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:28,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:28,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:01:28,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947652680] [2023-11-19 08:01:28,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:28,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:28,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:28,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:28,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:28,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 167 [2023-11-19 08:01:28,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:28,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 167 [2023-11-19 08:01:28,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:28,388 INFO L124 PetriNetUnfolderBase]: 176/281 cut-off events. [2023-11-19 08:01:28,389 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:01:28,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 886 event pairs, 12 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 598. Up to 128 conditions per place. [2023-11-19 08:01:28,396 INFO L140 encePairwiseOnDemand]: 161/167 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-11-19 08:01:28,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 39 transitions, 170 flow [2023-11-19 08:01:28,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:01:28,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:01:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 381 transitions. [2023-11-19 08:01:28,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562874251497006 [2023-11-19 08:01:28,399 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 381 transitions. [2023-11-19 08:01:28,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 381 transitions. [2023-11-19 08:01:28,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:28,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 381 transitions. [2023-11-19 08:01:28,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,405 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 381 transitions. [2023-11-19 08:01:28,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 39 transitions, 170 flow [2023-11-19 08:01:28,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:28,409 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 92 flow [2023-11-19 08:01:28,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-11-19 08:01:28,411 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-11-19 08:01:28,412 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 92 flow [2023-11-19 08:01:28,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:28,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:28,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:01:28,413 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)] === [2023-11-19 08:01:28,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:28,413 INFO L85 PathProgramCache]: Analyzing trace with hash 398196105, now seen corresponding path program 1 times [2023-11-19 08:01:28,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:28,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763406140] [2023-11-19 08:01:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:28,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:28,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:28,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763406140] [2023-11-19 08:01:28,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763406140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:28,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:28,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:01:28,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103877927] [2023-11-19 08:01:28,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:28,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:28,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:28,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:28,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:28,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 167 [2023-11-19 08:01:28,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:28,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 167 [2023-11-19 08:01:28,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:28,852 INFO L124 PetriNetUnfolderBase]: 130/212 cut-off events. [2023-11-19 08:01:28,853 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-19 08:01:28,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 212 events. 130/212 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 627 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 611. Up to 143 conditions per place. [2023-11-19 08:01:28,855 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 17 selfloop transitions, 1 changer transitions 11/29 dead transitions. [2023-11-19 08:01:28,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 184 flow [2023-11-19 08:01:28,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:01:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2023-11-19 08:01:28,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41916167664670656 [2023-11-19 08:01:28,857 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2023-11-19 08:01:28,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2023-11-19 08:01:28,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:28,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2023-11-19 08:01:28,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,862 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,862 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 92 flow. Second operand 4 states and 280 transitions. [2023-11-19 08:01:28,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 184 flow [2023-11-19 08:01:28,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:01:28,865 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 82 flow [2023-11-19 08:01:28,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-11-19 08:01:28,866 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-11-19 08:01:28,866 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 82 flow [2023-11-19 08:01:28,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:28,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:28,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:28,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:01:28,868 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)] === [2023-11-19 08:01:28,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash -507843160, now seen corresponding path program 1 times [2023-11-19 08:01:28,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:28,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658269418] [2023-11-19 08:01:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:28,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:28,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:28,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658269418] [2023-11-19 08:01:28,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658269418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:28,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:28,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:28,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037095750] [2023-11-19 08:01:28,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:28,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:28,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:28,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:29,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:29,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 08:01:29,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:29,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 08:01:29,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:29,113 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-11-19 08:01:29,114 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-19 08:01:29,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 157 events. 92/157 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 446 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 450. Up to 61 conditions per place. [2023-11-19 08:01:29,115 INFO L140 encePairwiseOnDemand]: 163/167 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-11-19 08:01:29,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 180 flow [2023-11-19 08:01:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:29,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:01:29,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2023-11-19 08:01:29,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43862275449101795 [2023-11-19 08:01:29,118 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions. [2023-11-19 08:01:29,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions. [2023-11-19 08:01:29,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:29,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions. [2023-11-19 08:01:29,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,124 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,124 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 82 flow. Second operand 4 states and 293 transitions. [2023-11-19 08:01:29,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 180 flow [2023-11-19 08:01:29,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:29,128 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 120 flow [2023-11-19 08:01:29,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-11-19 08:01:29,131 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2023-11-19 08:01:29,131 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 120 flow [2023-11-19 08:01:29,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:29,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:29,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:01:29,132 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)] === [2023-11-19 08:01:29,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:29,133 INFO L85 PathProgramCache]: Analyzing trace with hash -541296717, now seen corresponding path program 1 times [2023-11-19 08:01:29,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:29,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596801099] [2023-11-19 08:01:29,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:29,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:29,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:29,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596801099] [2023-11-19 08:01:29,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596801099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:29,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:29,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:29,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555431673] [2023-11-19 08:01:29,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:29,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:29,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:29,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:29,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:29,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 08:01:29,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:29,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 08:01:29,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:29,392 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-11-19 08:01:29,393 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-11-19 08:01:29,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 718 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 749. Up to 101 conditions per place. [2023-11-19 08:01:29,395 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-11-19 08:01:29,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 302 flow [2023-11-19 08:01:29,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:29,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:01:29,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 440 transitions. [2023-11-19 08:01:29,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43912175648702595 [2023-11-19 08:01:29,398 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 440 transitions. [2023-11-19 08:01:29,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 440 transitions. [2023-11-19 08:01:29,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:29,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 440 transitions. [2023-11-19 08:01:29,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 167.0) internal successors, (1169), 7 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,405 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 167.0) internal successors, (1169), 7 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,405 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 120 flow. Second operand 6 states and 440 transitions. [2023-11-19 08:01:29,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 302 flow [2023-11-19 08:01:29,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 286 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-19 08:01:29,413 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 204 flow [2023-11-19 08:01:29,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-11-19 08:01:29,414 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-11-19 08:01:29,414 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 204 flow [2023-11-19 08:01:29,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:29,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:29,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:01:29,416 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)] === [2023-11-19 08:01:29,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash -541273467, now seen corresponding path program 2 times [2023-11-19 08:01:29,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:29,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848112349] [2023-11-19 08:01:29,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:29,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:29,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:29,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848112349] [2023-11-19 08:01:29,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848112349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:29,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:29,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:29,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075105007] [2023-11-19 08:01:29,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:29,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:29,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:29,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:29,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:29,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 08:01:29,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:29,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 08:01:29,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:29,689 INFO L124 PetriNetUnfolderBase]: 132/231 cut-off events. [2023-11-19 08:01:29,690 INFO L125 PetriNetUnfolderBase]: For 553/553 co-relation queries the response was YES. [2023-11-19 08:01:29,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 231 events. 132/231 cut-off events. For 553/553 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 756 event pairs, 31 based on Foata normal form. 10/241 useless extension candidates. Maximal degree in co-relation 879. Up to 99 conditions per place. [2023-11-19 08:01:29,692 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 30 selfloop transitions, 15 changer transitions 8/53 dead transitions. [2023-11-19 08:01:29,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 423 flow [2023-11-19 08:01:29,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:01:29,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 511 transitions. [2023-11-19 08:01:29,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.437125748502994 [2023-11-19 08:01:29,696 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 511 transitions. [2023-11-19 08:01:29,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 511 transitions. [2023-11-19 08:01:29,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:29,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 511 transitions. [2023-11-19 08:01:29,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,702 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,702 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 204 flow. Second operand 7 states and 511 transitions. [2023-11-19 08:01:29,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 423 flow [2023-11-19 08:01:29,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 399 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-19 08:01:29,708 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 278 flow [2023-11-19 08:01:29,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2023-11-19 08:01:29,712 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 22 predicate places. [2023-11-19 08:01:29,712 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 278 flow [2023-11-19 08:01:29,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:29,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:29,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:01:29,713 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)] === [2023-11-19 08:01:29,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:29,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1548318116, now seen corresponding path program 1 times [2023-11-19 08:01:29,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:29,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528667261] [2023-11-19 08:01:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:29,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:29,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:29,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:29,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528667261] [2023-11-19 08:01:29,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528667261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:29,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:29,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:01:29,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215432975] [2023-11-19 08:01:29,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:29,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:01:29,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:29,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:01:29,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:01:29,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 08:01:29,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:29,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:29,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 08:01:29,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:30,035 INFO L124 PetriNetUnfolderBase]: 168/295 cut-off events. [2023-11-19 08:01:30,035 INFO L125 PetriNetUnfolderBase]: For 1095/1095 co-relation queries the response was YES. [2023-11-19 08:01:30,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 295 events. 168/295 cut-off events. For 1095/1095 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1009 event pairs, 20 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1234. Up to 79 conditions per place. [2023-11-19 08:01:30,038 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 37 selfloop transitions, 22 changer transitions 3/62 dead transitions. [2023-11-19 08:01:30,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 556 flow [2023-11-19 08:01:30,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:01:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:01:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 582 transitions. [2023-11-19 08:01:30,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356287425149701 [2023-11-19 08:01:30,042 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 582 transitions. [2023-11-19 08:01:30,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 582 transitions. [2023-11-19 08:01:30,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:30,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 582 transitions. [2023-11-19 08:01:30,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.75) internal successors, (582), 8 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:30,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:30,049 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:30,049 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 278 flow. Second operand 8 states and 582 transitions. [2023-11-19 08:01:30,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 556 flow [2023-11-19 08:01:30,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 524 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:30,056 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 390 flow [2023-11-19 08:01:30,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=390, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2023-11-19 08:01:30,057 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2023-11-19 08:01:30,057 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 390 flow [2023-11-19 08:01:30,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:30,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:30,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:30,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:01:30,058 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)] === [2023-11-19 08:01:30,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:30,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1588559216, now seen corresponding path program 2 times [2023-11-19 08:01:30,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:30,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256139381] [2023-11-19 08:01:30,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:30,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:30,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:30,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256139381] [2023-11-19 08:01:30,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256139381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:30,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:30,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:01:30,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425681168] [2023-11-19 08:01:30,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:30,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:01:30,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:30,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:01:30,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:01:30,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 08:01:30,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:30,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:30,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 08:01:30,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:30,310 INFO L124 PetriNetUnfolderBase]: 160/283 cut-off events. [2023-11-19 08:01:30,310 INFO L125 PetriNetUnfolderBase]: For 1704/1704 co-relation queries the response was YES. [2023-11-19 08:01:30,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 283 events. 160/283 cut-off events. For 1704/1704 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1001 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1348. Up to 69 conditions per place. [2023-11-19 08:01:30,313 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 30 selfloop transitions, 22 changer transitions 8/60 dead transitions. [2023-11-19 08:01:30,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 634 flow [2023-11-19 08:01:30,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:01:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 509 transitions. [2023-11-19 08:01:30,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354148845166809 [2023-11-19 08:01:30,317 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 509 transitions. [2023-11-19 08:01:30,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 509 transitions. [2023-11-19 08:01:30,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:30,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 509 transitions. [2023-11-19 08:01:30,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 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) [2023-11-19 08:01:30,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:30,323 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:30,323 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 390 flow. Second operand 7 states and 509 transitions. [2023-11-19 08:01:30,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 634 flow [2023-11-19 08:01:30,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 580 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-19 08:01:30,334 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 430 flow [2023-11-19 08:01:30,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=430, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2023-11-19 08:01:30,335 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-11-19 08:01:30,335 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 430 flow [2023-11-19 08:01:30,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:30,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:30,336 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:30,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:01:30,336 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)] === [2023-11-19 08:01:30,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:30,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2000723866, now seen corresponding path program 3 times [2023-11-19 08:01:30,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:30,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144466657] [2023-11-19 08:01:30,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:30,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:30,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:30,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144466657] [2023-11-19 08:01:30,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144466657] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:30,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330399462] [2023-11-19 08:01:30,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 08:01:30,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:30,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:30,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:30,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:01:30,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 08:01:30,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:01:30,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:01:30,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:30,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:30,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330399462] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:30,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:30,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 08:01:30,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976046974] [2023-11-19 08:01:30,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:30,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:01:30,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:30,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:01:30,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:01:30,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 08:01:30,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 430 flow. Second operand has 12 states, 12 states have (on average 68.91666666666667) internal successors, (827), 12 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:30,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:30,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 08:01:30,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:31,160 INFO L124 PetriNetUnfolderBase]: 208/363 cut-off events. [2023-11-19 08:01:31,160 INFO L125 PetriNetUnfolderBase]: For 2833/2833 co-relation queries the response was YES. [2023-11-19 08:01:31,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 363 events. 208/363 cut-off events. For 2833/2833 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1276 event pairs, 18 based on Foata normal form. 16/379 useless extension candidates. Maximal degree in co-relation 1850. Up to 91 conditions per place. [2023-11-19 08:01:31,164 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 34 selfloop transitions, 37 changer transitions 22/93 dead transitions. [2023-11-19 08:01:31,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 1040 flow [2023-11-19 08:01:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:01:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-19 08:01:31,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1012 transitions. [2023-11-19 08:01:31,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328485885372113 [2023-11-19 08:01:31,169 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1012 transitions. [2023-11-19 08:01:31,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1012 transitions. [2023-11-19 08:01:31,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:31,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1012 transitions. [2023-11-19 08:01:31,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 72.28571428571429) internal successors, (1012), 14 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:31,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:31,180 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:31,180 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 430 flow. Second operand 14 states and 1012 transitions. [2023-11-19 08:01:31,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 1040 flow [2023-11-19 08:01:31,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 973 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-11-19 08:01:31,192 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 749 flow [2023-11-19 08:01:31,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=749, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2023-11-19 08:01:31,193 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2023-11-19 08:01:31,194 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 749 flow [2023-11-19 08:01:31,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.91666666666667) internal successors, (827), 12 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:31,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:31,194 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:31,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:01:31,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 08:01:31,415 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)] === [2023-11-19 08:01:31,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:31,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1864557189, now seen corresponding path program 4 times [2023-11-19 08:01:31,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:31,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416166111] [2023-11-19 08:01:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:31,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:31,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:01:31,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:31,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416166111] [2023-11-19 08:01:31,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416166111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:31,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935160782] [2023-11-19 08:01:31,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 08:01:31,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:31,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:31,634 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:31,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:01:31,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 08:01:31,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:01:31,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 08:01:31,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:01:31,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:01:32,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935160782] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:32,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:32,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-19 08:01:32,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275809859] [2023-11-19 08:01:32,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:32,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 08:01:32,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:32,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 08:01:32,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:01:32,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 08:01:32,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 749 flow. Second operand has 16 states, 16 states have (on average 68.75) internal successors, (1100), 16 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:32,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:32,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 08:01:32,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:32,463 INFO L124 PetriNetUnfolderBase]: 264/475 cut-off events. [2023-11-19 08:01:32,463 INFO L125 PetriNetUnfolderBase]: For 5416/5416 co-relation queries the response was YES. [2023-11-19 08:01:32,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2703 conditions, 475 events. 264/475 cut-off events. For 5416/5416 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1734 event pairs, 55 based on Foata normal form. 32/507 useless extension candidates. Maximal degree in co-relation 2676. Up to 249 conditions per place. [2023-11-19 08:01:32,469 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 65 selfloop transitions, 27 changer transitions 27/119 dead transitions. [2023-11-19 08:01:32,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 119 transitions, 1567 flow [2023-11-19 08:01:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 08:01:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-19 08:01:32,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1155 transitions. [2023-11-19 08:01:32,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43226047904191617 [2023-11-19 08:01:32,476 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1155 transitions. [2023-11-19 08:01:32,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1155 transitions. [2023-11-19 08:01:32,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:32,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1155 transitions. [2023-11-19 08:01:32,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.1875) internal successors, (1155), 16 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:32,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:32,490 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:32,490 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 749 flow. Second operand 16 states and 1155 transitions. [2023-11-19 08:01:32,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 119 transitions, 1567 flow [2023-11-19 08:01:32,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 1188 flow, removed 176 selfloop flow, removed 5 redundant places. [2023-11-19 08:01:32,519 INFO L231 Difference]: Finished difference. Result has 91 places, 71 transitions, 837 flow [2023-11-19 08:01:32,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=837, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2023-11-19 08:01:32,520 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2023-11-19 08:01:32,521 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 837 flow [2023-11-19 08:01:32,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 68.75) internal successors, (1100), 16 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:32,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:32,522 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:32,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:32,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 08:01:32,740 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)] === [2023-11-19 08:01:32,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:32,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1956727319, now seen corresponding path program 5 times [2023-11-19 08:01:32,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:32,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800885778] [2023-11-19 08:01:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:32,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:01:32,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:32,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800885778] [2023-11-19 08:01:32,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800885778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:32,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910359371] [2023-11-19 08:01:32,933 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 08:01:32,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:32,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:32,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:32,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:01:33,030 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-19 08:01:33,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:01:33,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 08:01:33,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:01:33,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:01:33,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910359371] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:33,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:33,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-19 08:01:33,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010528562] [2023-11-19 08:01:33,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:33,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 08:01:33,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:33,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 08:01:33,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:01:33,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 08:01:33,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 71 transitions, 837 flow. Second operand has 17 states, 17 states have (on average 68.76470588235294) internal successors, (1169), 17 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:33,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:33,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 08:01:33,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:33,938 INFO L124 PetriNetUnfolderBase]: 418/767 cut-off events. [2023-11-19 08:01:33,938 INFO L125 PetriNetUnfolderBase]: For 14652/14652 co-relation queries the response was YES. [2023-11-19 08:01:33,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4392 conditions, 767 events. 418/767 cut-off events. For 14652/14652 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3421 event pairs, 42 based on Foata normal form. 32/799 useless extension candidates. Maximal degree in co-relation 4356. Up to 230 conditions per place. [2023-11-19 08:01:33,947 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 73 selfloop transitions, 73 changer transitions 37/183 dead transitions. [2023-11-19 08:01:33,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 183 transitions, 2229 flow [2023-11-19 08:01:33,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 08:01:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-19 08:01:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1588 transitions. [2023-11-19 08:01:33,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432226456178552 [2023-11-19 08:01:33,954 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1588 transitions. [2023-11-19 08:01:33,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1588 transitions. [2023-11-19 08:01:33,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:33,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1588 transitions. [2023-11-19 08:01:33,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 72.18181818181819) internal successors, (1588), 22 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:33,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 167.0) internal successors, (3841), 23 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:33,971 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 167.0) internal successors, (3841), 23 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:33,971 INFO L175 Difference]: Start difference. First operand has 91 places, 71 transitions, 837 flow. Second operand 22 states and 1588 transitions. [2023-11-19 08:01:33,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 183 transitions, 2229 flow [2023-11-19 08:01:34,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 183 transitions, 2088 flow, removed 61 selfloop flow, removed 4 redundant places. [2023-11-19 08:01:34,097 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 1568 flow [2023-11-19 08:01:34,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1568, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2023-11-19 08:01:34,099 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 98 predicate places. [2023-11-19 08:01:34,099 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 1568 flow [2023-11-19 08:01:34,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 68.76470588235294) internal successors, (1169), 17 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:34,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:34,100 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:34,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:34,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:34,326 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)] === [2023-11-19 08:01:34,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1244446295, now seen corresponding path program 6 times [2023-11-19 08:01:34,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:34,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274223923] [2023-11-19 08:01:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:34,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:01:34,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:34,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274223923] [2023-11-19 08:01:34,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274223923] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:34,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105658832] [2023-11-19 08:01:34,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 08:01:34,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:34,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:34,475 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:34,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:01:34,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-19 08:01:34,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:01:34,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 08:01:34,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:01:34,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:01:34,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105658832] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:34,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:34,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-19 08:01:34,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65858646] [2023-11-19 08:01:34,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:34,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 08:01:34,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:34,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 08:01:34,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:01:34,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 08:01:34,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 1568 flow. Second operand has 16 states, 16 states have (on average 68.75) internal successors, (1100), 16 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:34,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:34,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 08:01:34,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:35,511 INFO L124 PetriNetUnfolderBase]: 618/1123 cut-off events. [2023-11-19 08:01:35,512 INFO L125 PetriNetUnfolderBase]: For 43299/43299 co-relation queries the response was YES. [2023-11-19 08:01:35,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8375 conditions, 1123 events. 618/1123 cut-off events. For 43299/43299 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5475 event pairs, 32 based on Foata normal form. 36/1159 useless extension candidates. Maximal degree in co-relation 8324. Up to 358 conditions per place. [2023-11-19 08:01:35,527 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 71 selfloop transitions, 135 changer transitions 41/247 dead transitions. [2023-11-19 08:01:35,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 247 transitions, 3950 flow [2023-11-19 08:01:35,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-19 08:01:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-19 08:01:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1949 transitions. [2023-11-19 08:01:35,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322466178753604 [2023-11-19 08:01:35,536 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1949 transitions. [2023-11-19 08:01:35,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1949 transitions. [2023-11-19 08:01:35,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:35,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1949 transitions. [2023-11-19 08:01:35,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 72.18518518518519) internal successors, (1949), 27 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:35,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 167.0) internal successors, (4676), 28 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:35,563 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 167.0) internal successors, (4676), 28 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:35,564 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 1568 flow. Second operand 27 states and 1949 transitions. [2023-11-19 08:01:35,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 247 transitions, 3950 flow [2023-11-19 08:01:35,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 247 transitions, 3595 flow, removed 169 selfloop flow, removed 4 redundant places. [2023-11-19 08:01:35,709 INFO L231 Difference]: Finished difference. Result has 159 places, 159 transitions, 2748 flow [2023-11-19 08:01:35,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2748, PETRI_PLACES=159, PETRI_TRANSITIONS=159} [2023-11-19 08:01:35,711 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 135 predicate places. [2023-11-19 08:01:35,711 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 159 transitions, 2748 flow [2023-11-19 08:01:35,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 68.75) internal successors, (1100), 16 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:35,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:35,712 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:35,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:35,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 08:01:35,926 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)] === [2023-11-19 08:01:35,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash -355757457, now seen corresponding path program 7 times [2023-11-19 08:01:35,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:35,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185548279] [2023-11-19 08:01:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:35,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:01:36,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:36,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185548279] [2023-11-19 08:01:36,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185548279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:36,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057643033] [2023-11-19 08:01:36,128 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 08:01:36,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:36,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:36,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:36,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:01:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:36,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 08:01:36,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:01:36,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:36,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:01:36,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057643033] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:36,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:36,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-11-19 08:01:36,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340520414] [2023-11-19 08:01:36,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:36,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 08:01:36,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:36,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 08:01:36,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-11-19 08:01:36,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 08:01:36,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 159 transitions, 2748 flow. Second operand has 18 states, 18 states have (on average 68.72222222222223) internal successors, (1237), 18 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:36,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:36,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 08:01:36,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:37,251 INFO L124 PetriNetUnfolderBase]: 722/1319 cut-off events. [2023-11-19 08:01:37,252 INFO L125 PetriNetUnfolderBase]: For 81957/81957 co-relation queries the response was YES. [2023-11-19 08:01:37,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12417 conditions, 1319 events. 722/1319 cut-off events. For 81957/81957 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6686 event pairs, 46 based on Foata normal form. 20/1339 useless extension candidates. Maximal degree in co-relation 12350. Up to 433 conditions per place. [2023-11-19 08:01:37,275 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 71 selfloop transitions, 146 changer transitions 38/255 dead transitions. [2023-11-19 08:01:37,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 255 transitions, 5202 flow [2023-11-19 08:01:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 08:01:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-19 08:01:37,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1588 transitions. [2023-11-19 08:01:37,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432226456178552 [2023-11-19 08:01:37,281 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1588 transitions. [2023-11-19 08:01:37,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1588 transitions. [2023-11-19 08:01:37,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:37,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1588 transitions. [2023-11-19 08:01:37,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 72.18181818181819) internal successors, (1588), 22 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:37,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 167.0) internal successors, (3841), 23 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:37,295 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 167.0) internal successors, (3841), 23 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:37,295 INFO L175 Difference]: Start difference. First operand has 159 places, 159 transitions, 2748 flow. Second operand 22 states and 1588 transitions. [2023-11-19 08:01:37,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 255 transitions, 5202 flow [2023-11-19 08:01:37,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 255 transitions, 3941 flow, removed 601 selfloop flow, removed 11 redundant places. [2023-11-19 08:01:37,695 INFO L231 Difference]: Finished difference. Result has 177 places, 189 transitions, 3118 flow [2023-11-19 08:01:37,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3118, PETRI_PLACES=177, PETRI_TRANSITIONS=189} [2023-11-19 08:01:37,696 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 153 predicate places. [2023-11-19 08:01:37,697 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 189 transitions, 3118 flow [2023-11-19 08:01:37,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 68.72222222222223) internal successors, (1237), 18 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:37,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:37,698 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:37,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:37,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 08:01:37,919 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)] === [2023-11-19 08:01:37,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:37,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1719251139, now seen corresponding path program 8 times [2023-11-19 08:01:37,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:37,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831606706] [2023-11-19 08:01:37,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:37,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:38,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:38,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831606706] [2023-11-19 08:01:38,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831606706] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:38,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067241275] [2023-11-19 08:01:38,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:01:38,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:38,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:38,127 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:38,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:01:38,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:01:38,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:01:38,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 08:01:38,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:38,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:38,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067241275] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:38,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:38,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2023-11-19 08:01:38,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903489284] [2023-11-19 08:01:38,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:38,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 08:01:38,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:38,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 08:01:38,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:01:38,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 08:01:38,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 189 transitions, 3118 flow. Second operand has 15 states, 15 states have (on average 68.33333333333333) internal successors, (1025), 15 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:38,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:38,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 08:01:38,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:39,234 INFO L124 PetriNetUnfolderBase]: 738/1347 cut-off events. [2023-11-19 08:01:39,234 INFO L125 PetriNetUnfolderBase]: For 63245/63245 co-relation queries the response was YES. [2023-11-19 08:01:39,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11581 conditions, 1347 events. 738/1347 cut-off events. For 63245/63245 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6831 event pairs, 40 based on Foata normal form. 4/1351 useless extension candidates. Maximal degree in co-relation 11508. Up to 433 conditions per place. [2023-11-19 08:01:39,260 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 67 selfloop transitions, 150 changer transitions 34/251 dead transitions. [2023-11-19 08:01:39,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 251 transitions, 4576 flow [2023-11-19 08:01:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 08:01:39,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-19 08:01:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1438 transitions. [2023-11-19 08:01:39,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305389221556886 [2023-11-19 08:01:39,265 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1438 transitions. [2023-11-19 08:01:39,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1438 transitions. [2023-11-19 08:01:39,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:39,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1438 transitions. [2023-11-19 08:01:39,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 71.9) internal successors, (1438), 20 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:39,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 167.0) internal successors, (3507), 21 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:39,288 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 167.0) internal successors, (3507), 21 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:39,296 INFO L175 Difference]: Start difference. First operand has 177 places, 189 transitions, 3118 flow. Second operand 20 states and 1438 transitions. [2023-11-19 08:01:39,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 251 transitions, 4576 flow [2023-11-19 08:01:39,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 251 transitions, 4291 flow, removed 113 selfloop flow, removed 8 redundant places. [2023-11-19 08:01:39,682 INFO L231 Difference]: Finished difference. Result has 190 places, 193 transitions, 3277 flow [2023-11-19 08:01:39,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2833, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3277, PETRI_PLACES=190, PETRI_TRANSITIONS=193} [2023-11-19 08:01:39,683 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 166 predicate places. [2023-11-19 08:01:39,684 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 193 transitions, 3277 flow [2023-11-19 08:01:39,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 68.33333333333333) internal successors, (1025), 15 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:39,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:39,685 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:39,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:39,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 08:01:39,891 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)] === [2023-11-19 08:01:39,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:39,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1699081814, now seen corresponding path program 9 times [2023-11-19 08:01:39,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:39,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159000259] [2023-11-19 08:01:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:39,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:40,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:40,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159000259] [2023-11-19 08:01:40,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159000259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:40,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179191212] [2023-11-19 08:01:40,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 08:01:40,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:40,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:40,155 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:40,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:01:40,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 08:01:40,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:01:40,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 08:01:40,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:40,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:40,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179191212] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:40,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:40,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-19 08:01:40,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377474990] [2023-11-19 08:01:40,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:40,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 08:01:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 08:01:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2023-11-19 08:01:40,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 08:01:40,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 193 transitions, 3277 flow. Second operand has 24 states, 24 states have (on average 68.45833333333333) internal successors, (1643), 24 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:40,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:40,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 08:01:40,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:41,593 INFO L124 PetriNetUnfolderBase]: 762/1391 cut-off events. [2023-11-19 08:01:41,594 INFO L125 PetriNetUnfolderBase]: For 77213/77213 co-relation queries the response was YES. [2023-11-19 08:01:41,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12350 conditions, 1391 events. 762/1391 cut-off events. For 77213/77213 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7113 event pairs, 25 based on Foata normal form. 20/1411 useless extension candidates. Maximal degree in co-relation 12274. Up to 457 conditions per place. [2023-11-19 08:01:41,617 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 69 selfloop transitions, 174 changer transitions 50/293 dead transitions. [2023-11-19 08:01:41,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 293 transitions, 5455 flow [2023-11-19 08:01:41,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-19 08:01:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-19 08:01:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2017 transitions. [2023-11-19 08:01:41,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4313515825491873 [2023-11-19 08:01:41,622 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2017 transitions. [2023-11-19 08:01:41,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2017 transitions. [2023-11-19 08:01:41,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:41,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2017 transitions. [2023-11-19 08:01:41,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 72.03571428571429) internal successors, (2017), 28 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:41,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 167.0) internal successors, (4843), 29 states have internal predecessors, (4843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:41,637 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 167.0) internal successors, (4843), 29 states have internal predecessors, (4843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:41,637 INFO L175 Difference]: Start difference. First operand has 190 places, 193 transitions, 3277 flow. Second operand 28 states and 2017 transitions. [2023-11-19 08:01:41,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 293 transitions, 5455 flow [2023-11-19 08:01:42,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 293 transitions, 5114 flow, removed 47 selfloop flow, removed 16 redundant places. [2023-11-19 08:01:42,029 INFO L231 Difference]: Finished difference. Result has 208 places, 203 transitions, 3763 flow [2023-11-19 08:01:42,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2936, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3763, PETRI_PLACES=208, PETRI_TRANSITIONS=203} [2023-11-19 08:01:42,035 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 184 predicate places. [2023-11-19 08:01:42,036 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 203 transitions, 3763 flow [2023-11-19 08:01:42,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 68.45833333333333) internal successors, (1643), 24 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:42,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:42,037 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:42,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:42,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 08:01:42,246 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)] === [2023-11-19 08:01:42,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash -148662600, now seen corresponding path program 10 times [2023-11-19 08:01:42,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:42,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486307791] [2023-11-19 08:01:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:42,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:42,267 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:42,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:42,303 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:01:42,304 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-19 08:01:42,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-19 08:01:42,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-19 08:01:42,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-19 08:01:42,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-19 08:01:42,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-19 08:01:42,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-19 08:01:42,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-19 08:01:42,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 08:01:42,308 INFO L445 BasicCegarLoop]: Path program histogram: [10, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:42,312 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 08:01:42,313 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:01:42,362 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-19 08:01:42,364 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-19 08:01:42,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:01:42 BasicIcfg [2023-11-19 08:01:42,385 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:01:42,386 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:01:42,386 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:01:42,386 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:01:42,386 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:24" (3/4) ... [2023-11-19 08:01:42,388 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 08:01:42,389 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:01:42,390 INFO L158 Benchmark]: Toolchain (without parser) took 19630.20ms. Allocated memory was 146.8MB in the beginning and 260.0MB in the end (delta: 113.2MB). Free memory was 101.7MB in the beginning and 94.3MB in the end (delta: 7.4MB). Peak memory consumption was 122.0MB. Max. memory is 16.1GB. [2023-11-19 08:01:42,390 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:01:42,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 610.93ms. Allocated memory is still 146.8MB. Free memory was 101.2MB in the beginning and 82.1MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 08:01:42,391 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.72ms. Allocated memory is still 146.8MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:01:42,391 INFO L158 Benchmark]: Boogie Preprocessor took 67.26ms. Allocated memory is still 146.8MB. Free memory was 80.0MB in the beginning and 78.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:01:42,392 INFO L158 Benchmark]: RCFGBuilder took 524.29ms. Allocated memory is still 146.8MB. Free memory was 78.9MB in the beginning and 64.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 08:01:42,392 INFO L158 Benchmark]: TraceAbstraction took 18342.13ms. Allocated memory was 146.8MB in the beginning and 260.0MB in the end (delta: 113.2MB). Free memory was 64.2MB in the beginning and 95.4MB in the end (delta: -31.2MB). Peak memory consumption was 84.2MB. Max. memory is 16.1GB. [2023-11-19 08:01:42,392 INFO L158 Benchmark]: Witness Printer took 3.82ms. Allocated memory is still 260.0MB. Free memory was 95.4MB in the beginning and 94.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:01:42,394 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 610.93ms. Allocated memory is still 146.8MB. Free memory was 101.2MB in the beginning and 82.1MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.72ms. Allocated memory is still 146.8MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.26ms. Allocated memory is still 146.8MB. Free memory was 80.0MB in the beginning and 78.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 524.29ms. Allocated memory is still 146.8MB. Free memory was 78.9MB in the beginning and 64.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 18342.13ms. Allocated memory was 146.8MB in the beginning and 260.0MB in the end (delta: 113.2MB). Free memory was 64.2MB in the beginning and 95.4MB in the end (delta: -31.2MB). Peak memory consumption was 84.2MB. Max. memory is 16.1GB. * Witness Printer took 3.82ms. Allocated memory is still 260.0MB. Free memory was 95.4MB in the beginning and 94.3MB in the end (delta: 1.0MB). 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: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 81 PlacesBefore, 24 PlacesAfterwards, 80 TransitionsBefore, 20 TransitionsAfterwards, 1728 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 85 TotalNumberOfCompositions, 1540 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1395, independent: 1366, independent conditional: 0, independent unconditional: 1366, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 900, independent: 890, independent conditional: 0, independent unconditional: 890, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1395, independent: 476, independent conditional: 0, independent unconditional: 476, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 900, unknown conditional: 0, unknown unconditional: 900] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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}, argv={50:51}, i=3, id1={3:0}, id2={5:0}, j=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, i=3, id1={3:0}, id2={5:0}, 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 < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*5 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, condI=0, i=7, id1={3:0}, id2={5:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 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] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 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] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [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 < 5 [L706] 2 j = i + 1 [L704] 2 k++ 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 < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [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 < 5 [L698] 1 i = j + 1 [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 < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L719] 0 int condJ = j >= (2*5 +6); [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) [L693] 0 __assert_fail ("0", "triangular-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] - 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, 101 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: 18.1s, OverallIterations: 18, TraceHistogramMax: 5, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1989 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1813 mSDsluCounter, 474 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 442 mSDsCounter, 237 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2595 IncrementalHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 237 mSolverCounterUnsat, 32 mSDtfsCounter, 2595 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 402 GetRequests, 133 SyntacticMatches, 9 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1846 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3763occurred in iteration=17, InterpolantAutomatonStates: 198, 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, 4.0s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 339 ConstructedInterpolants, 0 QuantifiedInterpolants, 1454 SizeOfPredicates, 42 NumberOfNonLiveVariables, 993 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 31 InterpolantComputations, 10 PerfectInterpolantSequences, 12/189 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 [2023-11-19 08:01:42,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu --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 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:45,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:45,354 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 08:01:45,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:45,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:45,431 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:45,432 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:45,432 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:45,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:45,440 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:45,441 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:45,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:45,442 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:45,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:45,445 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:01:45,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:45,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:01:45,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:45,447 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:01:45,448 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:01:45,448 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:01:45,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:45,449 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:01:45,450 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 08:01:45,450 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 08:01:45,451 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:01:45,451 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:01:45,452 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:45,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:45,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:45,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:45,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:45,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:45,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:45,456 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 08:01:45,456 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 08:01:45,456 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:45,456 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:45,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:45,458 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 08:01:45,458 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:45,458 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_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2023-11-19 08:01:45,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:45,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:45,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:45,909 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:45,910 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:45,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/triangular-2.i [2023-11-19 08:01:49,058 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:49,388 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:49,392 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/sv-benchmarks/c/pthread/triangular-2.i [2023-11-19 08:01:49,424 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/data/3a1e7d94a/b2f05f44369e4af581bf3c8379cbb5df/FLAG16aef6836 [2023-11-19 08:01:49,449 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/data/3a1e7d94a/b2f05f44369e4af581bf3c8379cbb5df [2023-11-19 08:01:49,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:49,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:49,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:49,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:49,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:49,468 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:49" (1/1) ... [2023-11-19 08:01:49,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1067fb47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:49, skipping insertion in model container [2023-11-19 08:01:49,469 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:49" (1/1) ... [2023-11-19 08:01:49,538 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:50,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:50,048 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:50,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:50,215 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:50,215 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:50,227 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:50,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50 WrapperNode [2023-11-19 08:01:50,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:50,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:50,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:50,230 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:50,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,298 INFO L138 Inliner]: procedures = 172, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2023-11-19 08:01:50,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:50,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:50,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:50,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:50,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,372 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:50,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:50,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:50,378 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:50,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:50,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:50,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:50,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 08:01:50,476 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 08:01:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 08:01:50,476 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 08:01:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:01:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:01:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:01:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 08:01:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 08:01:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:01:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:50,482 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:01:50,680 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:50,684 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:01:50,917 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:01:50,925 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:01:50,925 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:01:50,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:50 BoogieIcfgContainer [2023-11-19 08:01:50,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:01:50,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:01:50,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:01:50,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:01:50,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:49" (1/3) ... [2023-11-19 08:01:50,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19da72a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:50, skipping insertion in model container [2023-11-19 08:01:50,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50" (2/3) ... [2023-11-19 08:01:50,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19da72a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:50, skipping insertion in model container [2023-11-19 08:01:50,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:50" (3/3) ... [2023-11-19 08:01:50,938 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2023-11-19 08:01:50,958 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:01:50,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 08:01:50,958 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:01:51,057 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:01:51,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 174 flow [2023-11-19 08:01:51,177 INFO L124 PetriNetUnfolderBase]: 6/81 cut-off events. [2023-11-19 08:01:51,178 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:51,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 81 events. 6/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-19 08:01:51,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 83 transitions, 174 flow [2023-11-19 08:01:51,193 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 81 transitions, 168 flow [2023-11-19 08:01:51,197 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:51,216 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 81 transitions, 168 flow [2023-11-19 08:01:51,221 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 81 transitions, 168 flow [2023-11-19 08:01:51,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 81 transitions, 168 flow [2023-11-19 08:01:51,252 INFO L124 PetriNetUnfolderBase]: 6/81 cut-off events. [2023-11-19 08:01:51,256 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:51,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 81 events. 6/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-19 08:01:51,260 INFO L119 LiptonReduction]: Number of co-enabled transitions 1728 [2023-11-19 08:01:58,698 INFO L134 LiptonReduction]: Checked pairs total: 1503 [2023-11-19 08:01:58,698 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-11-19 08:01:58,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:01:58,721 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;@3c4f0f1e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:01:58,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 08:01:58,723 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:01:58,723 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 08:01:58,724 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:58,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:58,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:01:58,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 08:01:58,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:58,731 INFO L85 PathProgramCache]: Analyzing trace with hash 333, now seen corresponding path program 1 times [2023-11-19 08:01:58,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:01:58,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660619250] [2023-11-19 08:01:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:58,746 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 [2023-11-19 08:01:58,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:01:58,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:01:58,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:01:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:58,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:01:58,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:58,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:58,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:01:58,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660619250] [2023-11-19 08:01:58,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660619250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:58,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:58,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:01:58,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813284325] [2023-11-19 08:01:58,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:58,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:01:58,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:01:58,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:01:58,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:01:58,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 171 [2023-11-19 08:01:58,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:58,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:58,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 171 [2023-11-19 08:01:58,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:58,994 INFO L124 PetriNetUnfolderBase]: 112/179 cut-off events. [2023-11-19 08:01:58,994 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:01:58,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 466 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-11-19 08:01:58,998 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-11-19 08:01:58,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-11-19 08:01:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:01:59,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:01:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 172 transitions. [2023-11-19 08:01:59,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2023-11-19 08:01:59,015 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 172 transitions. [2023-11-19 08:01:59,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 172 transitions. [2023-11-19 08:01:59,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:59,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 172 transitions. [2023-11-19 08:01:59,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:59,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:59,034 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:59,036 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 172 transitions. [2023-11-19 08:01:59,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-11-19 08:01:59,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:59,044 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-11-19 08:01:59,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-11-19 08:01:59,052 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-19 08:01:59,053 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-11-19 08:01:59,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:59,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:59,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:01:59,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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)] Ended with exit code 0 [2023-11-19 08:01:59,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:01:59,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 08:01:59,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:59,257 INFO L85 PathProgramCache]: Analyzing trace with hash 326034, now seen corresponding path program 1 times [2023-11-19 08:01:59,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:01:59,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548523648] [2023-11-19 08:01:59,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:59,259 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 [2023-11-19 08:01:59,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:01:59,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:01:59,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:01:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:59,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:01:59,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:59,464 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 [2023-11-19 08:01:59,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:59,489 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 [2023-11-19 08:01:59,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:59,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:59,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:01:59,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548523648] [2023-11-19 08:01:59,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548523648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:59,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:59,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:01:59,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734860483] [2023-11-19 08:01:59,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:59,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:59,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:01:59,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:59,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:59,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 171 [2023-11-19 08:01:59,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 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) [2023-11-19 08:01:59,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:59,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 171 [2023-11-19 08:01:59,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:59,705 INFO L124 PetriNetUnfolderBase]: 91/146 cut-off events. [2023-11-19 08:01:59,706 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:59,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 356 event pairs, 46 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 119 conditions per place. [2023-11-19 08:01:59,709 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-11-19 08:01:59,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-11-19 08:01:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:01:59,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-11-19 08:01:59,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4580896686159844 [2023-11-19 08:01:59,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-11-19 08:01:59,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-11-19 08:01:59,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:59,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-11-19 08:01:59,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:59,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:59,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:59,719 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 235 transitions. [2023-11-19 08:01:59,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-11-19 08:01:59,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:01:59,721 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-11-19 08:01:59,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-11-19 08:01:59,722 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-19 08:01:59,722 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-11-19 08:01:59,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 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) [2023-11-19 08:01:59,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:59,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:01:59,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:01:59,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:01:59,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 08:01:59,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:59,927 INFO L85 PathProgramCache]: Analyzing trace with hash 326036, now seen corresponding path program 1 times [2023-11-19 08:01:59,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:01:59,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261729468] [2023-11-19 08:01:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:59,929 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 [2023-11-19 08:01:59,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:01:59,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:01:59,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:00,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:02:00,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:00,050 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 7 [2023-11-19 08:02:00,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:02:00,068 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 6 treesize of output 1 [2023-11-19 08:02:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:00,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:00,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:00,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261729468] [2023-11-19 08:02:00,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261729468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:00,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:00,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:02:00,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984301580] [2023-11-19 08:02:00,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:00,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:00,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:00,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:00,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:00,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-19 08:02:00,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:00,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:00,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-19 08:02:00,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:00,231 INFO L124 PetriNetUnfolderBase]: 88/140 cut-off events. [2023-11-19 08:02:00,231 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:02:00,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 341 event pairs, 32 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 298. Up to 86 conditions per place. [2023-11-19 08:02:00,233 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-11-19 08:02:00,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-11-19 08:02:00,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:00,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:00,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-11-19 08:02:00,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2023-11-19 08:02:00,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-11-19 08:02:00,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-11-19 08:02:00,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:00,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-11-19 08:02:00,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:00,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:00,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:00,242 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 225 transitions. [2023-11-19 08:02:00,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-11-19 08:02:00,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:02:00,243 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-11-19 08:02:00,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-11-19 08:02:00,244 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-11-19 08:02:00,245 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-11-19 08:02:00,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:00,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:00,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:02:00,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:00,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:00,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 08:02:00,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:00,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1123191904, now seen corresponding path program 1 times [2023-11-19 08:02:00,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:00,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960330395] [2023-11-19 08:02:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:00,450 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 [2023-11-19 08:02:00,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:00,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:02:00,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:00,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:02:00,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:00,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:00,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:00,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960330395] [2023-11-19 08:02:00,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960330395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:00,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:00,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:00,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929941007] [2023-11-19 08:02:00,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:00,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:00,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:00,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:00,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:00,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 171 [2023-11-19 08:02:00,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:00,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:00,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 171 [2023-11-19 08:02:00,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:00,873 INFO L124 PetriNetUnfolderBase]: 176/281 cut-off events. [2023-11-19 08:02:00,873 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-19 08:02:00,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 878 event pairs, 14 based on Foata normal form. 15/223 useless extension candidates. Maximal degree in co-relation 598. Up to 144 conditions per place. [2023-11-19 08:02:00,880 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 31 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-11-19 08:02:00,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 38 transitions, 166 flow [2023-11-19 08:02:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:02:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2023-11-19 08:02:00,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2023-11-19 08:02:00,889 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2023-11-19 08:02:00,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2023-11-19 08:02:00,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:00,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2023-11-19 08:02:00,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 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) [2023-11-19 08:02:00,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:00,901 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:00,907 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 385 transitions. [2023-11-19 08:02:00,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 38 transitions, 166 flow [2023-11-19 08:02:00,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:02:00,914 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 79 flow [2023-11-19 08:02:00,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2023-11-19 08:02:00,916 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2023-11-19 08:02:00,916 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 79 flow [2023-11-19 08:02:00,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:00,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:00,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:00,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:01,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:01,127 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)] === [2023-11-19 08:02:01,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:01,128 INFO L85 PathProgramCache]: Analyzing trace with hash 459211080, now seen corresponding path program 1 times [2023-11-19 08:02:01,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:01,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113790417] [2023-11-19 08:02:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:01,129 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 [2023-11-19 08:02:01,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:01,131 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:02:01,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:01,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:02:01,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:01,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:01,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:01,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113790417] [2023-11-19 08:02:01,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113790417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:01,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:01,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:01,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351298577] [2023-11-19 08:02:01,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:01,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:01,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:01,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:01,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:01,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 171 [2023-11-19 08:02:01,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:01,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:01,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 171 [2023-11-19 08:02:01,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:01,956 INFO L124 PetriNetUnfolderBase]: 130/212 cut-off events. [2023-11-19 08:02:01,957 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-11-19 08:02:01,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 212 events. 130/212 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 630 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 579. Up to 143 conditions per place. [2023-11-19 08:02:01,959 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 17 selfloop transitions, 1 changer transitions 10/28 dead transitions. [2023-11-19 08:02:01,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 167 flow [2023-11-19 08:02:01,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:02:01,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:02:01,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2023-11-19 08:02:01,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093567251461988 [2023-11-19 08:02:01,970 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2023-11-19 08:02:01,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2023-11-19 08:02:01,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:01,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2023-11-19 08:02:01,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:01,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:01,975 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:01,975 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 79 flow. Second operand 4 states and 280 transitions. [2023-11-19 08:02:01,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 167 flow [2023-11-19 08:02:01,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:02:01,980 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 77 flow [2023-11-19 08:02:01,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-11-19 08:02:01,984 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2023-11-19 08:02:01,984 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 77 flow [2023-11-19 08:02:01,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:01,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:01,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:01,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:02,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:02,189 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)] === [2023-11-19 08:02:02,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:02,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1384520660, now seen corresponding path program 1 times [2023-11-19 08:02:02,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:02,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450747788] [2023-11-19 08:02:02,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:02,191 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 [2023-11-19 08:02:02,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:02,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:02:02,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:02,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:02:02,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:02,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:02,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:02,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450747788] [2023-11-19 08:02:02,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450747788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:02,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:02,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:02,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150908431] [2023-11-19 08:02:02,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:02,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:02,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:02,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:02,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:02,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-19 08:02:02,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:02,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:02,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-19 08:02:02,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:02,566 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-11-19 08:02:02,567 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-19 08:02:02,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 157 events. 92/157 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 444 event pairs, 23 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 449. Up to 61 conditions per place. [2023-11-19 08:02:02,569 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 22 selfloop transitions, 9 changer transitions 3/34 dead transitions. [2023-11-19 08:02:02,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 193 flow [2023-11-19 08:02:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:02:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 372 transitions. [2023-11-19 08:02:02,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43508771929824563 [2023-11-19 08:02:02,573 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 372 transitions. [2023-11-19 08:02:02,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 372 transitions. [2023-11-19 08:02:02,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:02,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 372 transitions. [2023-11-19 08:02:02,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:02,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:02,580 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:02,583 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 77 flow. Second operand 5 states and 372 transitions. [2023-11-19 08:02:02,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 193 flow [2023-11-19 08:02:02,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:02:02,586 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 119 flow [2023-11-19 08:02:02,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-11-19 08:02:02,590 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2023-11-19 08:02:02,590 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 119 flow [2023-11-19 08:02:02,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:02,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:02,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:02,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:02,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:02,795 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)] === [2023-11-19 08:02:02,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:02,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1350136793, now seen corresponding path program 1 times [2023-11-19 08:02:02,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:02,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020950268] [2023-11-19 08:02:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:02,797 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 [2023-11-19 08:02:02,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:02,798 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:02:02,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:02,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:02:02,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:02,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:02,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:02,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020950268] [2023-11-19 08:02:02,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020950268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:02,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:02,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:02,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912715870] [2023-11-19 08:02:02,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:02,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:02,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:02,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:02,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-19 08:02:02,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:02,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:02,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-19 08:02:02,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:03,117 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-11-19 08:02:03,117 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2023-11-19 08:02:03,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 229 events. 132/229 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 715 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 733. Up to 101 conditions per place. [2023-11-19 08:02:03,120 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-11-19 08:02:03,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 301 flow [2023-11-19 08:02:03,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:02:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:02:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 446 transitions. [2023-11-19 08:02:03,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346978557504873 [2023-11-19 08:02:03,133 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 446 transitions. [2023-11-19 08:02:03,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 446 transitions. [2023-11-19 08:02:03,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:03,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 446 transitions. [2023-11-19 08:02:03,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:03,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:03,142 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:03,142 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 119 flow. Second operand 6 states and 446 transitions. [2023-11-19 08:02:03,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 301 flow [2023-11-19 08:02:03,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 284 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 08:02:03,150 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 200 flow [2023-11-19 08:02:03,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-11-19 08:02:03,151 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2023-11-19 08:02:03,151 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 200 flow [2023-11-19 08:02:03,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:03,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:03,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:03,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:03,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:03,371 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)] === [2023-11-19 08:02:03,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:03,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1350158183, now seen corresponding path program 2 times [2023-11-19 08:02:03,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:03,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109649810] [2023-11-19 08:02:03,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:02:03,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 08:02:03,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:03,374 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:02:03,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:03,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:02:03,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:03,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:02:03,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:03,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:03,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:03,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:03,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109649810] [2023-11-19 08:02:03,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109649810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:03,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:03,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:03,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895488781] [2023-11-19 08:02:03,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:03,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:03,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:03,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:03,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:03,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-19 08:02:03,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:03,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:03,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-19 08:02:03,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:03,699 INFO L124 PetriNetUnfolderBase]: 124/219 cut-off events. [2023-11-19 08:02:03,699 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2023-11-19 08:02:03,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 219 events. 124/219 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 703 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 818. Up to 107 conditions per place. [2023-11-19 08:02:03,701 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 30 selfloop transitions, 12 changer transitions 6/48 dead transitions. [2023-11-19 08:02:03,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 381 flow [2023-11-19 08:02:03,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:02:03,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:02:03,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 445 transitions. [2023-11-19 08:02:03,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337231968810916 [2023-11-19 08:02:03,705 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 445 transitions. [2023-11-19 08:02:03,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 445 transitions. [2023-11-19 08:02:03,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:03,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 445 transitions. [2023-11-19 08:02:03,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:03,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:03,710 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:03,710 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 200 flow. Second operand 6 states and 445 transitions. [2023-11-19 08:02:03,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 381 flow [2023-11-19 08:02:03,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 355 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-11-19 08:02:03,717 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 242 flow [2023-11-19 08:02:03,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-11-19 08:02:03,719 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2023-11-19 08:02:03,719 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 242 flow [2023-11-19 08:02:03,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:03,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:03,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:03,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:03,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:03,923 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)] === [2023-11-19 08:02:03,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:03,923 INFO L85 PathProgramCache]: Analyzing trace with hash -963366845, now seen corresponding path program 1 times [2023-11-19 08:02:03,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:03,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633926381] [2023-11-19 08:02:03,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:03,924 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 [2023-11-19 08:02:03,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:03,929 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:02:03,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:04,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:02:04,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:04,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:04,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:04,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633926381] [2023-11-19 08:02:04,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633926381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:04,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:04,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:04,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618592872] [2023-11-19 08:02:04,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:04,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:02:04,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:04,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:02:04,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:04,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-19 08:02:04,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:04,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-19 08:02:04,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:04,345 INFO L124 PetriNetUnfolderBase]: 172/303 cut-off events. [2023-11-19 08:02:04,345 INFO L125 PetriNetUnfolderBase]: For 1057/1057 co-relation queries the response was YES. [2023-11-19 08:02:04,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 303 events. 172/303 cut-off events. For 1057/1057 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1062 event pairs, 41 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1216. Up to 131 conditions per place. [2023-11-19 08:02:04,348 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 43 selfloop transitions, 15 changer transitions 5/63 dead transitions. [2023-11-19 08:02:04,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 536 flow [2023-11-19 08:02:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:02:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:02:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 664 transitions. [2023-11-19 08:02:04,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314489928525016 [2023-11-19 08:02:04,352 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 664 transitions. [2023-11-19 08:02:04,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 664 transitions. [2023-11-19 08:02:04,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:04,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 664 transitions. [2023-11-19 08:02:04,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.77777777777777) internal successors, (664), 9 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,359 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,360 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 242 flow. Second operand 9 states and 664 transitions. [2023-11-19 08:02:04,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 536 flow [2023-11-19 08:02:04,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 514 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-19 08:02:04,366 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 330 flow [2023-11-19 08:02:04,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2023-11-19 08:02:04,367 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2023-11-19 08:02:04,367 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 330 flow [2023-11-19 08:02:04,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:04,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:04,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:04,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:04,570 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)] === [2023-11-19 08:02:04,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:04,571 INFO L85 PathProgramCache]: Analyzing trace with hash -963345455, now seen corresponding path program 2 times [2023-11-19 08:02:04,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:04,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61420401] [2023-11-19 08:02:04,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:02:04,571 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 [2023-11-19 08:02:04,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:04,573 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:02:04,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:04,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:02:04,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:04,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:02:04,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:04,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:04,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:04,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61420401] [2023-11-19 08:02:04,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61420401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:04,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:04,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:04,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091272262] [2023-11-19 08:02:04,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:04,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:02:04,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:04,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:02:04,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:04,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-19 08:02:04,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:04,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-19 08:02:04,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:04,976 INFO L124 PetriNetUnfolderBase]: 168/299 cut-off events. [2023-11-19 08:02:04,976 INFO L125 PetriNetUnfolderBase]: For 1652/1652 co-relation queries the response was YES. [2023-11-19 08:02:04,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 299 events. 168/299 cut-off events. For 1652/1652 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1091 event pairs, 45 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 1369. Up to 137 conditions per place. [2023-11-19 08:02:04,979 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 38 selfloop transitions, 15 changer transitions 6/59 dead transitions. [2023-11-19 08:02:04,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 593 flow [2023-11-19 08:02:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:02:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:02:04,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 518 transitions. [2023-11-19 08:02:04,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2023-11-19 08:02:04,983 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 518 transitions. [2023-11-19 08:02:04,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 518 transitions. [2023-11-19 08:02:04,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:04,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 518 transitions. [2023-11-19 08:02:04,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,989 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:04,989 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 330 flow. Second operand 7 states and 518 transitions. [2023-11-19 08:02:04,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 593 flow [2023-11-19 08:02:04,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 522 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-11-19 08:02:05,000 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 343 flow [2023-11-19 08:02:05,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2023-11-19 08:02:05,001 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-11-19 08:02:05,001 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 343 flow [2023-11-19 08:02:05,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:05,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:05,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:05,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:05,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:05,209 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)] === [2023-11-19 08:02:05,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:05,210 INFO L85 PathProgramCache]: Analyzing trace with hash -964433555, now seen corresponding path program 3 times [2023-11-19 08:02:05,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:05,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761185513] [2023-11-19 08:02:05,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 08:02:05,211 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 [2023-11-19 08:02:05,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:05,212 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:02:05,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:05,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 08:02:05,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:05,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:02:05,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:05,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:05,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:05,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761185513] [2023-11-19 08:02:05,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761185513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:05,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:05,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:05,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620904841] [2023-11-19 08:02:05,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:05,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:02:05,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:05,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:02:05,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:05,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-19 08:02:05,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:05,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:05,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-19 08:02:05,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:05,641 INFO L124 PetriNetUnfolderBase]: 164/295 cut-off events. [2023-11-19 08:02:05,641 INFO L125 PetriNetUnfolderBase]: For 1803/1803 co-relation queries the response was YES. [2023-11-19 08:02:05,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 295 events. 164/295 cut-off events. For 1803/1803 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1101 event pairs, 46 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1316. Up to 222 conditions per place. [2023-11-19 08:02:05,644 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 44 selfloop transitions, 9 changer transitions 9/62 dead transitions. [2023-11-19 08:02:05,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 571 flow [2023-11-19 08:02:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:02:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:02:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 518 transitions. [2023-11-19 08:02:05,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2023-11-19 08:02:05,648 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 518 transitions. [2023-11-19 08:02:05,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 518 transitions. [2023-11-19 08:02:05,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:05,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 518 transitions. [2023-11-19 08:02:05,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:05,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:05,653 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:05,654 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 343 flow. Second operand 7 states and 518 transitions. [2023-11-19 08:02:05,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 571 flow [2023-11-19 08:02:05,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 541 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-19 08:02:05,664 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 367 flow [2023-11-19 08:02:05,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2023-11-19 08:02:05,665 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 40 predicate places. [2023-11-19 08:02:05,665 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 367 flow [2023-11-19 08:02:05,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:05,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:05,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:05,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:05,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:05,869 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)] === [2023-11-19 08:02:05,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:05,869 INFO L85 PathProgramCache]: Analyzing trace with hash -963749075, now seen corresponding path program 4 times [2023-11-19 08:02:05,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:05,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490785161] [2023-11-19 08:02:05,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 08:02:05,870 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 [2023-11-19 08:02:05,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:05,871 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:02:05,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:05,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 08:02:05,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:05,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:02:05,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:06,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:06,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:06,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490785161] [2023-11-19 08:02:06,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490785161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:06,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:06,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:06,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412324862] [2023-11-19 08:02:06,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:06,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:02:06,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:06,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:02:06,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:06,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-19 08:02:06,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:06,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:06,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-19 08:02:06,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:06,306 INFO L124 PetriNetUnfolderBase]: 176/315 cut-off events. [2023-11-19 08:02:06,307 INFO L125 PetriNetUnfolderBase]: For 2090/2090 co-relation queries the response was YES. [2023-11-19 08:02:06,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 315 events. 176/315 cut-off events. For 2090/2090 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1177 event pairs, 53 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 1458. Up to 177 conditions per place. [2023-11-19 08:02:06,310 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 41 selfloop transitions, 16 changer transitions 8/65 dead transitions. [2023-11-19 08:02:06,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 643 flow [2023-11-19 08:02:06,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:02:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:02:06,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 517 transitions. [2023-11-19 08:02:06,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4319131161236424 [2023-11-19 08:02:06,314 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 517 transitions. [2023-11-19 08:02:06,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 517 transitions. [2023-11-19 08:02:06,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:06,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 517 transitions. [2023-11-19 08:02:06,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:06,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:06,321 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:06,321 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 367 flow. Second operand 7 states and 517 transitions. [2023-11-19 08:02:06,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 643 flow [2023-11-19 08:02:06,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 617 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-19 08:02:06,336 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 438 flow [2023-11-19 08:02:06,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2023-11-19 08:02:06,337 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2023-11-19 08:02:06,337 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 438 flow [2023-11-19 08:02:06,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:06,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:06,338 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:06,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:06,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:06,541 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)] === [2023-11-19 08:02:06,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash 201097033, now seen corresponding path program 5 times [2023-11-19 08:02:06,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:06,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201649681] [2023-11-19 08:02:06,542 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 08:02:06,542 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 [2023-11-19 08:02:06,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:06,544 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:02:06,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:06,625 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:02:06,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:06,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:02:06,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:06,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:06,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:06,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201649681] [2023-11-19 08:02:06,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201649681] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:06,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:02:06,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-19 08:02:06,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309816950] [2023-11-19 08:02:06,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:06,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:02:06,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:06,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:02:06,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:02:07,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-19 08:02:07,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 69.83333333333333) internal successors, (838), 12 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:07,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:07,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-19 08:02:07,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:07,787 INFO L124 PetriNetUnfolderBase]: 224/395 cut-off events. [2023-11-19 08:02:07,788 INFO L125 PetriNetUnfolderBase]: For 4433/4433 co-relation queries the response was YES. [2023-11-19 08:02:07,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 395 events. 224/395 cut-off events. For 4433/4433 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1521 event pairs, 12 based on Foata normal form. 16/411 useless extension candidates. Maximal degree in co-relation 2027. Up to 99 conditions per place. [2023-11-19 08:02:07,793 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 36 selfloop transitions, 43 changer transitions 26/105 dead transitions. [2023-11-19 08:02:07,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 1130 flow [2023-11-19 08:02:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 08:02:07,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-19 08:02:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1175 transitions. [2023-11-19 08:02:07,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294590643274854 [2023-11-19 08:02:07,800 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1175 transitions. [2023-11-19 08:02:07,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1175 transitions. [2023-11-19 08:02:07,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:07,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1175 transitions. [2023-11-19 08:02:07,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.4375) internal successors, (1175), 16 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:07,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 171.0) internal successors, (2907), 17 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:07,814 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 171.0) internal successors, (2907), 17 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:07,814 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 438 flow. Second operand 16 states and 1175 transitions. [2023-11-19 08:02:07,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 1130 flow [2023-11-19 08:02:07,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 1081 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-19 08:02:07,836 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 837 flow [2023-11-19 08:02:07,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=837, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2023-11-19 08:02:07,837 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 60 predicate places. [2023-11-19 08:02:07,837 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 837 flow [2023-11-19 08:02:07,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.83333333333333) internal successors, (838), 12 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:07,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:07,839 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:07,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:08,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:08,047 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)] === [2023-11-19 08:02:08,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:08,048 INFO L85 PathProgramCache]: Analyzing trace with hash 166927469, now seen corresponding path program 6 times [2023-11-19 08:02:08,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:08,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854062822] [2023-11-19 08:02:08,048 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 08:02:08,048 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 [2023-11-19 08:02:08,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:08,050 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:02:08,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f579fbdc-1977-47ea-aaee-118154b56e8d/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:02:08,144 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-19 08:02:08,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:08,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:02:08,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:08,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:08,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:08,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854062822] [2023-11-19 08:02:08,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854062822] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:08,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:02:08,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-19 08:02:08,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320790843] [2023-11-19 08:02:08,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:08,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:02:08,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:08,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:02:08,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:02:08,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-19 08:02:08,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 837 flow. Second operand has 12 states, 12 states have (on average 69.83333333333333) internal successors, (838), 12 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:08,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:08,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-19 08:02:08,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand