./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB --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 6b30bad195dde021066febd52c7985271e0448c265b66e6efcbd9c3306420e73 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:33:58,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:33:58,177 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 04:33:58,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:33:58,183 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:33:58,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:33:58,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:33:58,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:33:58,213 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:33:58,214 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:33:58,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:33:58,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:33:58,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:33:58,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:33:58,214 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:33:58,215 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:33:58,215 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:33:58,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:33:58,215 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:33:58,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:33:58,215 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:33:58,215 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:33:58,220 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:33:58,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:33:58,220 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:33:58,220 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:33:58,220 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:33:58,220 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:33:58,220 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:33:58,220 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:33:58,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:33:58,221 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:33:58,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:33:58,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:33:58,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:33:58,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:33:58,221 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:33:58,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:33:58,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:33:58,222 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:33:58,222 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:33:58,222 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:33:58,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:33:58,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:33:58,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:33:58,222 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:33:58,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:33:58,223 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 6b30bad195dde021066febd52c7985271e0448c265b66e6efcbd9c3306420e73 [2024-11-28 04:33:58,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:33:58,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:33:58,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:33:58,591 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:33:58,592 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:33:58,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2024-11-28 04:34:01,735 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/data/042e08cc9/dd6dbb2749254ec4b2939bf50c192b48/FLAG2511cb83a [2024-11-28 04:34:02,016 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:34:02,017 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2024-11-28 04:34:02,040 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/data/042e08cc9/dd6dbb2749254ec4b2939bf50c192b48/FLAG2511cb83a [2024-11-28 04:34:02,060 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/data/042e08cc9/dd6dbb2749254ec4b2939bf50c192b48 [2024-11-28 04:34:02,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:34:02,064 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:34:02,066 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:34:02,066 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:34:02,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:34:02,073 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,074 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286b8834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02, skipping insertion in model container [2024-11-28 04:34:02,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,097 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:34:02,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:34:02,306 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:34:02,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:34:02,368 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:34:02,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02 WrapperNode [2024-11-28 04:34:02,369 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:34:02,370 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:34:02,370 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:34:02,370 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:34:02,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,389 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,415 INFO L138 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 50 [2024-11-28 04:34:02,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:34:02,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:34:02,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:34:02,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:34:02,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,432 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,454 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:34:02,454 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,455 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,460 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,464 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,475 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:34:02,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:34:02,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:34:02,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:34:02,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (1/1) ... [2024-11-28 04:34:02,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:34:02,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:02,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:34:02,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:34:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:34:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:34:02,571 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:34:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:34:02,571 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:34:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:34:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:34:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:34:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:34:02,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:34:02,575 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:34:02,704 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:34:02,706 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:34:02,937 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:34:02,937 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:34:03,100 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:34:03,100 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:34:03,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:34:03 BoogieIcfgContainer [2024-11-28 04:34:03,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:34:03,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:34:03,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:34:03,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:34:03,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:34:02" (1/3) ... [2024-11-28 04:34:03,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691bcc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:34:03, skipping insertion in model container [2024-11-28 04:34:03,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:02" (2/3) ... [2024-11-28 04:34:03,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691bcc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:34:03, skipping insertion in model container [2024-11-28 04:34:03,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:34:03" (3/3) ... [2024-11-28 04:34:03,112 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2024-11-28 04:34:03,131 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:34:03,132 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-threaded-sum-2.wvr.c that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-28 04:34:03,133 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:34:03,211 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 04:34:03,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 27 transitions, 68 flow [2024-11-28 04:34:03,309 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-28 04:34:03,314 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:34:03,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 25 events. 2/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-11-28 04:34:03,321 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 27 transitions, 68 flow [2024-11-28 04:34:03,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 24 transitions, 60 flow [2024-11-28 04:34:03,343 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:34:03,367 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@507066e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:34:03,368 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 04:34:03,387 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:34:03,388 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-11-28 04:34:03,388 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:34:03,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:34:03,392 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:03,392 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:34:03,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:03,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1272638056, now seen corresponding path program 1 times [2024-11-28 04:34:03,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:03,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957838080] [2024-11-28 04:34:03,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:03,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:04,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:04,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957838080] [2024-11-28 04:34:04,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957838080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:04,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:34:04,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:34:04,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293738820] [2024-11-28 04:34:04,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:04,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:04,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:04,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:04,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:34:04,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2024-11-28 04:34:04,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:04,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:34:04,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2024-11-28 04:34:04,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:34:04,284 INFO L124 PetriNetUnfolderBase]: 104/206 cut-off events. [2024-11-28 04:34:04,284 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-28 04:34:04,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 206 events. 104/206 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 767 event pairs, 8 based on Foata normal form. 13/214 useless extension candidates. Maximal degree in co-relation 366. Up to 117 conditions per place. [2024-11-28 04:34:04,289 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 29 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2024-11-28 04:34:04,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 175 flow [2024-11-28 04:34:04,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:34:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:34:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-11-28 04:34:04,304 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-11-28 04:34:04,305 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 5 states and 88 transitions. [2024-11-28 04:34:04,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 175 flow [2024-11-28 04:34:04,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 161 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:34:04,315 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 93 flow [2024-11-28 04:34:04,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2024-11-28 04:34:04,324 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-11-28 04:34:04,327 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 93 flow [2024-11-28 04:34:04,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:04,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:34:04,328 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:04,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:34:04,328 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:34:04,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:04,329 INFO L85 PathProgramCache]: Analyzing trace with hash -808264332, now seen corresponding path program 1 times [2024-11-28 04:34:04,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:04,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356003257] [2024-11-28 04:34:04,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:04,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:34:04,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:04,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356003257] [2024-11-28 04:34:04,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356003257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:04,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:34:04,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:34:04,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681431697] [2024-11-28 04:34:04,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:04,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:04,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:04,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:04,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:34:04,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2024-11-28 04:34:04,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:04,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:34:04,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2024-11-28 04:34:04,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:34:04,868 INFO L124 PetriNetUnfolderBase]: 116/238 cut-off events. [2024-11-28 04:34:04,868 INFO L125 PetriNetUnfolderBase]: For 194/203 co-relation queries the response was YES. [2024-11-28 04:34:04,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 238 events. 116/238 cut-off events. For 194/203 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1031 event pairs, 11 based on Foata normal form. 18/243 useless extension candidates. Maximal degree in co-relation 234. Up to 124 conditions per place. [2024-11-28 04:34:04,871 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 26 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-11-28 04:34:04,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 195 flow [2024-11-28 04:34:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:34:04,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:34:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-28 04:34:04,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-28 04:34:04,874 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 93 flow. Second operand 4 states and 66 transitions. [2024-11-28 04:34:04,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 195 flow [2024-11-28 04:34:04,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:34:04,931 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 104 flow [2024-11-28 04:34:04,931 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-28 04:34:04,932 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-11-28 04:34:04,932 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 104 flow [2024-11-28 04:34:04,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:04,932 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:34:04,932 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:04,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:34:04,933 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:34:04,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash -800323447, now seen corresponding path program 1 times [2024-11-28 04:34:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:04,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883417718] [2024-11-28 04:34:04,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:04,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:05,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:05,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883417718] [2024-11-28 04:34:05,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883417718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:05,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:34:05,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:34:05,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064968627] [2024-11-28 04:34:05,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:05,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:34:05,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:05,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:34:05,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:34:05,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2024-11-28 04:34:05,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:05,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:34:05,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2024-11-28 04:34:05,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:34:05,452 INFO L124 PetriNetUnfolderBase]: 116/241 cut-off events. [2024-11-28 04:34:05,452 INFO L125 PetriNetUnfolderBase]: For 180/207 co-relation queries the response was YES. [2024-11-28 04:34:05,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 241 events. 116/241 cut-off events. For 180/207 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 976 event pairs, 15 based on Foata normal form. 23/260 useless extension candidates. Maximal degree in co-relation 298. Up to 83 conditions per place. [2024-11-28 04:34:05,458 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 30 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-11-28 04:34:05,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 238 flow [2024-11-28 04:34:05,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:34:05,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:34:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-11-28 04:34:05,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-11-28 04:34:05,462 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 104 flow. Second operand 5 states and 84 transitions. [2024-11-28 04:34:05,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 238 flow [2024-11-28 04:34:05,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 233 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:34:05,466 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 150 flow [2024-11-28 04:34:05,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-11-28 04:34:05,467 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-11-28 04:34:05,467 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 150 flow [2024-11-28 04:34:05,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:05,467 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:34:05,468 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:05,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:34:05,468 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:34:05,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:05,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1027898981, now seen corresponding path program 2 times [2024-11-28 04:34:05,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:05,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168777683] [2024-11-28 04:34:05,469 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:34:05,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:05,508 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:34:05,508 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:34:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:06,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:06,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168777683] [2024-11-28 04:34:06,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168777683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:06,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:34:06,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:34:06,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125650949] [2024-11-28 04:34:06,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:06,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:34:06,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:06,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:34:06,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:34:06,749 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 04:34:06,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 150 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:06,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:34:06,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 04:34:06,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:34:07,571 INFO L124 PetriNetUnfolderBase]: 247/476 cut-off events. [2024-11-28 04:34:07,572 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2024-11-28 04:34:07,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 476 events. 247/476 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2001 event pairs, 17 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 568. Up to 262 conditions per place. [2024-11-28 04:34:07,578 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 41 selfloop transitions, 22 changer transitions 16/84 dead transitions. [2024-11-28 04:34:07,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 84 transitions, 516 flow [2024-11-28 04:34:07,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:34:07,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 04:34:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 197 transitions. [2024-11-28 04:34:07,586 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48641975308641977 [2024-11-28 04:34:07,588 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 150 flow. Second operand 15 states and 197 transitions. [2024-11-28 04:34:07,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 84 transitions, 516 flow [2024-11-28 04:34:07,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 84 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:34:07,596 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 316 flow [2024-11-28 04:34:07,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=316, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-11-28 04:34:07,597 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-11-28 04:34:07,598 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 316 flow [2024-11-28 04:34:07,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:07,599 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:34:07,599 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:07,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:34:07,600 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:34:07,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:07,601 INFO L85 PathProgramCache]: Analyzing trace with hash -610995937, now seen corresponding path program 1 times [2024-11-28 04:34:07,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:07,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785389499] [2024-11-28 04:34:07,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:07,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:08,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:08,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785389499] [2024-11-28 04:34:08,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785389499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:08,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:34:08,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:34:08,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879535267] [2024-11-28 04:34:08,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:08,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:34:08,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:08,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:34:08,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:08,041 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2024-11-28 04:34:08,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:08,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:34:08,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2024-11-28 04:34:08,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:34:08,368 INFO L124 PetriNetUnfolderBase]: 405/843 cut-off events. [2024-11-28 04:34:08,368 INFO L125 PetriNetUnfolderBase]: For 2759/2771 co-relation queries the response was YES. [2024-11-28 04:34:08,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3120 conditions, 843 events. 405/843 cut-off events. For 2759/2771 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4312 event pairs, 33 based on Foata normal form. 18/850 useless extension candidates. Maximal degree in co-relation 2349. Up to 224 conditions per place. [2024-11-28 04:34:08,378 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 64 selfloop transitions, 32 changer transitions 0/107 dead transitions. [2024-11-28 04:34:08,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 107 transitions, 871 flow [2024-11-28 04:34:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:34:08,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:34:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-11-28 04:34:08,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6931216931216931 [2024-11-28 04:34:08,380 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 316 flow. Second operand 7 states and 131 transitions. [2024-11-28 04:34:08,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 107 transitions, 871 flow [2024-11-28 04:34:08,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 107 transitions, 790 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-11-28 04:34:08,401 INFO L231 Difference]: Finished difference. Result has 61 places, 69 transitions, 545 flow [2024-11-28 04:34:08,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=61, PETRI_TRANSITIONS=69} [2024-11-28 04:34:08,402 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-11-28 04:34:08,403 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 69 transitions, 545 flow [2024-11-28 04:34:08,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:08,403 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:34:08,403 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:08,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:34:08,404 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:34:08,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:08,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1121414537, now seen corresponding path program 2 times [2024-11-28 04:34:08,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:08,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198140745] [2024-11-28 04:34:08,407 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:34:08,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:08,439 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:34:08,439 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:34:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:09,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:09,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198140745] [2024-11-28 04:34:09,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198140745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:09,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596752561] [2024-11-28 04:34:09,080 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:34:09,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:09,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:09,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:09,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:34:09,221 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:34:09,221 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:34:09,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:34:09,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:10,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:10,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:34:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:12,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596752561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:34:12,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:34:12,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 23 [2024-11-28 04:34:12,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576508176] [2024-11-28 04:34:12,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:34:12,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:34:12,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:12,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:34:12,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:34:12,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-28 04:34:12,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 69 transitions, 545 flow. Second operand has 24 states, 24 states have (on average 11.0) internal successors, (264), 24 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:12,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:34:12,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-28 04:34:12,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:34:19,307 INFO L124 PetriNetUnfolderBase]: 1359/2799 cut-off events. [2024-11-28 04:34:19,308 INFO L125 PetriNetUnfolderBase]: For 12977/13021 co-relation queries the response was YES. [2024-11-28 04:34:19,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11044 conditions, 2799 events. 1359/2799 cut-off events. For 12977/13021 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 19018 event pairs, 36 based on Foata normal form. 34/2809 useless extension candidates. Maximal degree in co-relation 7111. Up to 667 conditions per place. [2024-11-28 04:34:19,334 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 139 selfloop transitions, 130 changer transitions 85/364 dead transitions. [2024-11-28 04:34:19,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 364 transitions, 3273 flow [2024-11-28 04:34:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-28 04:34:19,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-11-28 04:34:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 752 transitions. [2024-11-28 04:34:19,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5356125356125356 [2024-11-28 04:34:19,342 INFO L175 Difference]: Start difference. First operand has 61 places, 69 transitions, 545 flow. Second operand 52 states and 752 transitions. [2024-11-28 04:34:19,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 364 transitions, 3273 flow [2024-11-28 04:34:19,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 364 transitions, 3059 flow, removed 107 selfloop flow, removed 0 redundant places. [2024-11-28 04:34:19,383 INFO L231 Difference]: Finished difference. Result has 132 places, 177 transitions, 1893 flow [2024-11-28 04:34:19,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=1893, PETRI_PLACES=132, PETRI_TRANSITIONS=177} [2024-11-28 04:34:19,386 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 103 predicate places. [2024-11-28 04:34:19,387 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 177 transitions, 1893 flow [2024-11-28 04:34:19,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.0) internal successors, (264), 24 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:19,387 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:34:19,388 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:19,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:34:19,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:19,588 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:34:19,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:19,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1130055921, now seen corresponding path program 3 times [2024-11-28 04:34:19,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:19,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211462517] [2024-11-28 04:34:19,589 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:34:19,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:19,628 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 04:34:19,629 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:34:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:20,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:20,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211462517] [2024-11-28 04:34:20,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211462517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:20,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:34:20,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:34:20,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332968558] [2024-11-28 04:34:20,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:20,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:34:20,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:20,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:34:20,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:34:20,947 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 04:34:20,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 177 transitions, 1893 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:20,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:34:20,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 04:34:20,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:34:26,159 INFO L124 PetriNetUnfolderBase]: 1287/2544 cut-off events. [2024-11-28 04:34:26,159 INFO L125 PetriNetUnfolderBase]: For 17867/18017 co-relation queries the response was YES. [2024-11-28 04:34:26,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12292 conditions, 2544 events. 1287/2544 cut-off events. For 17867/18017 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16135 event pairs, 114 based on Foata normal form. 26/2545 useless extension candidates. Maximal degree in co-relation 12148. Up to 1724 conditions per place. [2024-11-28 04:34:26,189 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 152 selfloop transitions, 71 changer transitions 25/258 dead transitions. [2024-11-28 04:34:26,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 258 transitions, 3092 flow [2024-11-28 04:34:26,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:34:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 04:34:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 243 transitions. [2024-11-28 04:34:26,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-11-28 04:34:26,192 INFO L175 Difference]: Start difference. First operand has 132 places, 177 transitions, 1893 flow. Second operand 19 states and 243 transitions. [2024-11-28 04:34:26,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 258 transitions, 3092 flow [2024-11-28 04:34:26,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 258 transitions, 2678 flow, removed 189 selfloop flow, removed 17 redundant places. [2024-11-28 04:34:26,255 INFO L231 Difference]: Finished difference. Result has 128 places, 204 transitions, 2100 flow [2024-11-28 04:34:26,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2100, PETRI_PLACES=128, PETRI_TRANSITIONS=204} [2024-11-28 04:34:26,256 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-11-28 04:34:26,256 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 204 transitions, 2100 flow [2024-11-28 04:34:26,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:26,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:34:26,257 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:26,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:34:26,257 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:34:26,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:26,258 INFO L85 PathProgramCache]: Analyzing trace with hash 807113232, now seen corresponding path program 3 times [2024-11-28 04:34:26,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:26,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735029848] [2024-11-28 04:34:26,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:34:26,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:26,274 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 04:34:26,274 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:34:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:34:26,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:26,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735029848] [2024-11-28 04:34:26,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735029848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:26,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:34:26,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:34:26,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828821] [2024-11-28 04:34:26,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:26,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:34:26,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:26,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:34:26,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:26,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 04:34:26,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 204 transitions, 2100 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:26,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:34:26,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 04:34:26,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:34:27,336 INFO L124 PetriNetUnfolderBase]: 1723/3311 cut-off events. [2024-11-28 04:34:27,337 INFO L125 PetriNetUnfolderBase]: For 25845/26076 co-relation queries the response was YES. [2024-11-28 04:34:27,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17371 conditions, 3311 events. 1723/3311 cut-off events. For 25845/26076 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 22004 event pairs, 225 based on Foata normal form. 29/3283 useless extension candidates. Maximal degree in co-relation 16119. Up to 928 conditions per place. [2024-11-28 04:34:27,369 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 239 selfloop transitions, 132 changer transitions 0/381 dead transitions. [2024-11-28 04:34:27,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 381 transitions, 4782 flow [2024-11-28 04:34:27,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:34:27,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:34:27,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-11-28 04:34:27,371 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-11-28 04:34:27,371 INFO L175 Difference]: Start difference. First operand has 128 places, 204 transitions, 2100 flow. Second operand 7 states and 114 transitions. [2024-11-28 04:34:27,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 381 transitions, 4782 flow [2024-11-28 04:34:27,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 381 transitions, 4672 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-11-28 04:34:27,429 INFO L231 Difference]: Finished difference. Result has 127 places, 279 transitions, 3227 flow [2024-11-28 04:34:27,430 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3227, PETRI_PLACES=127, PETRI_TRANSITIONS=279} [2024-11-28 04:34:27,431 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-11-28 04:34:27,431 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 279 transitions, 3227 flow [2024-11-28 04:34:27,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:27,431 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:34:27,431 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:27,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:34:27,432 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:34:27,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:27,432 INFO L85 PathProgramCache]: Analyzing trace with hash -48275704, now seen corresponding path program 4 times [2024-11-28 04:34:27,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:27,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217541859] [2024-11-28 04:34:27,432 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:34:27,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:27,450 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:34:27,451 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:34:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:28,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:28,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217541859] [2024-11-28 04:34:28,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217541859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:28,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012236684] [2024-11-28 04:34:28,153 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:34:28,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:28,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:28,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:28,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:34:28,248 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:34:28,248 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:34:28,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:34:28,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:29,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:34:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:30,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012236684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:34:30,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:34:30,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2024-11-28 04:34:30,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086945115] [2024-11-28 04:34:30,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:34:30,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:34:30,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:30,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:34:30,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:34:30,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-28 04:34:30,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 279 transitions, 3227 flow. Second operand has 27 states, 27 states have (on average 8.222222222222221) internal successors, (222), 27 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:30,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:34:30,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-28 04:34:30,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:34:40,117 INFO L124 PetriNetUnfolderBase]: 4950/8671 cut-off events. [2024-11-28 04:34:40,209 INFO L125 PetriNetUnfolderBase]: For 80771/80771 co-relation queries the response was YES. [2024-11-28 04:34:40,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48381 conditions, 8671 events. 4950/8671 cut-off events. For 80771/80771 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 58859 event pairs, 201 based on Foata normal form. 21/8691 useless extension candidates. Maximal degree in co-relation 44849. Up to 1682 conditions per place. [2024-11-28 04:34:40,295 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 455 selfloop transitions, 512 changer transitions 93/1063 dead transitions. [2024-11-28 04:34:40,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 1063 transitions, 13839 flow [2024-11-28 04:34:40,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-28 04:34:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-11-28 04:34:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 891 transitions. [2024-11-28 04:34:40,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-28 04:34:40,301 INFO L175 Difference]: Start difference. First operand has 127 places, 279 transitions, 3227 flow. Second operand 72 states and 891 transitions. [2024-11-28 04:34:40,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 1063 transitions, 13839 flow [2024-11-28 04:34:40,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 1063 transitions, 13376 flow, removed 230 selfloop flow, removed 1 redundant places. [2024-11-28 04:34:40,527 INFO L231 Difference]: Finished difference. Result has 244 places, 644 transitions, 9535 flow [2024-11-28 04:34:40,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3192, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=9535, PETRI_PLACES=244, PETRI_TRANSITIONS=644} [2024-11-28 04:34:40,528 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 215 predicate places. [2024-11-28 04:34:40,528 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 644 transitions, 9535 flow [2024-11-28 04:34:40,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.222222222222221) internal successors, (222), 27 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:40,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:34:40,528 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:40,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:34:40,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:40,729 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:34:40,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:40,730 INFO L85 PathProgramCache]: Analyzing trace with hash -42584788, now seen corresponding path program 5 times [2024-11-28 04:34:40,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:40,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432545542] [2024-11-28 04:34:40,730 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:34:40,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:40,743 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:34:40,743 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:34:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:34:40,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:40,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432545542] [2024-11-28 04:34:40,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432545542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:40,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:34:40,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:34:40,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466813860] [2024-11-28 04:34:40,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:40,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:34:40,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:40,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:34:40,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:40,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 04:34:40,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 644 transitions, 9535 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:40,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:34:40,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 04:34:40,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:34:42,810 INFO L124 PetriNetUnfolderBase]: 3014/5893 cut-off events. [2024-11-28 04:34:42,810 INFO L125 PetriNetUnfolderBase]: For 146458/146991 co-relation queries the response was YES. [2024-11-28 04:34:42,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41448 conditions, 5893 events. 3014/5893 cut-off events. For 146458/146991 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 43690 event pairs, 969 based on Foata normal form. 48/5881 useless extension candidates. Maximal degree in co-relation 41201. Up to 3507 conditions per place. [2024-11-28 04:34:42,908 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 458 selfloop transitions, 216 changer transitions 0/716 dead transitions. [2024-11-28 04:34:42,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 716 transitions, 11846 flow [2024-11-28 04:34:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:34:42,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:34:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-11-28 04:34:42,910 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.544973544973545 [2024-11-28 04:34:42,910 INFO L175 Difference]: Start difference. First operand has 244 places, 644 transitions, 9535 flow. Second operand 7 states and 103 transitions. [2024-11-28 04:34:42,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 716 transitions, 11846 flow [2024-11-28 04:34:43,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 716 transitions, 10512 flow, removed 634 selfloop flow, removed 16 redundant places. [2024-11-28 04:34:43,725 INFO L231 Difference]: Finished difference. Result has 234 places, 650 transitions, 9186 flow [2024-11-28 04:34:43,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8383, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9186, PETRI_PLACES=234, PETRI_TRANSITIONS=650} [2024-11-28 04:34:43,726 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 205 predicate places. [2024-11-28 04:34:43,726 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 650 transitions, 9186 flow [2024-11-28 04:34:43,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:43,726 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:34:43,726 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:43,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:34:43,726 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:34:43,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:43,727 INFO L85 PathProgramCache]: Analyzing trace with hash 387918774, now seen corresponding path program 6 times [2024-11-28 04:34:43,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:43,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851569530] [2024-11-28 04:34:43,727 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:34:43,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:43,739 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 04:34:43,739 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:34:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:34:43,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:43,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851569530] [2024-11-28 04:34:43,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851569530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:43,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:34:43,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:34:43,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914093406] [2024-11-28 04:34:43,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:43,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:34:43,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:43,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:34:43,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:44,011 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-28 04:34:44,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 650 transitions, 9186 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:44,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:34:44,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-28 04:34:44,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:34:46,130 INFO L124 PetriNetUnfolderBase]: 3040/5940 cut-off events. [2024-11-28 04:34:46,131 INFO L125 PetriNetUnfolderBase]: For 141686/142266 co-relation queries the response was YES. [2024-11-28 04:34:46,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39524 conditions, 5940 events. 3040/5940 cut-off events. For 141686/142266 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 44279 event pairs, 480 based on Foata normal form. 65/5911 useless extension candidates. Maximal degree in co-relation 36127. Up to 1799 conditions per place. [2024-11-28 04:34:46,202 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 502 selfloop transitions, 278 changer transitions 0/822 dead transitions. [2024-11-28 04:34:46,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 822 transitions, 12866 flow [2024-11-28 04:34:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:34:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:34:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-11-28 04:34:46,203 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5637860082304527 [2024-11-28 04:34:46,203 INFO L175 Difference]: Start difference. First operand has 234 places, 650 transitions, 9186 flow. Second operand 9 states and 137 transitions. [2024-11-28 04:34:46,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 822 transitions, 12866 flow [2024-11-28 04:34:46,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 822 transitions, 12800 flow, removed 33 selfloop flow, removed 0 redundant places. [2024-11-28 04:34:46,900 INFO L231 Difference]: Finished difference. Result has 244 places, 656 transitions, 10033 flow [2024-11-28 04:34:46,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9150, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10033, PETRI_PLACES=244, PETRI_TRANSITIONS=656} [2024-11-28 04:34:46,902 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 215 predicate places. [2024-11-28 04:34:46,902 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 656 transitions, 10033 flow [2024-11-28 04:34:46,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:46,902 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:34:46,902 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:46,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:34:46,903 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:34:46,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:46,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1393660586, now seen corresponding path program 7 times [2024-11-28 04:34:46,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:46,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901385170] [2024-11-28 04:34:46,904 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:34:46,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:47,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:47,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901385170] [2024-11-28 04:34:47,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901385170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:47,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:34:47,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:34:47,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119494474] [2024-11-28 04:34:47,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:47,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:34:47,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:47,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:34:47,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:47,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-28 04:34:47,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 656 transitions, 10033 flow. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:47,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:34:47,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-28 04:34:47,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:34:49,863 INFO L124 PetriNetUnfolderBase]: 4740/8400 cut-off events. [2024-11-28 04:34:49,863 INFO L125 PetriNetUnfolderBase]: For 209467/210679 co-relation queries the response was YES. [2024-11-28 04:34:49,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57438 conditions, 8400 events. 4740/8400 cut-off events. For 209467/210679 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 58917 event pairs, 52 based on Foata normal form. 202/8563 useless extension candidates. Maximal degree in co-relation 55635. Up to 2466 conditions per place. [2024-11-28 04:34:50,044 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 850 selfloop transitions, 360 changer transitions 0/1251 dead transitions. [2024-11-28 04:34:50,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 1251 transitions, 21707 flow [2024-11-28 04:34:50,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:34:50,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:34:50,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-11-28 04:34:50,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-11-28 04:34:50,046 INFO L175 Difference]: Start difference. First operand has 244 places, 656 transitions, 10033 flow. Second operand 9 states and 120 transitions. [2024-11-28 04:34:50,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 1251 transitions, 21707 flow [2024-11-28 04:34:51,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1251 transitions, 20531 flow, removed 112 selfloop flow, removed 6 redundant places. [2024-11-28 04:34:51,313 INFO L231 Difference]: Finished difference. Result has 251 places, 825 transitions, 14016 flow [2024-11-28 04:34:51,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9023, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14016, PETRI_PLACES=251, PETRI_TRANSITIONS=825} [2024-11-28 04:34:51,315 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2024-11-28 04:34:51,315 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 825 transitions, 14016 flow [2024-11-28 04:34:51,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:51,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:34:51,315 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:51,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:34:51,315 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:34:51,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:51,316 INFO L85 PathProgramCache]: Analyzing trace with hash 688848419, now seen corresponding path program 4 times [2024-11-28 04:34:51,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:51,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113588785] [2024-11-28 04:34:51,317 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:34:51,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:51,351 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:34:51,351 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:34:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:52,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:52,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113588785] [2024-11-28 04:34:52,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113588785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:52,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043880751] [2024-11-28 04:34:52,322 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:34:52,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:52,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:52,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:52,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:34:52,405 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:34:52,405 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:34:52,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:34:52,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:53,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:34:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:54,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043880751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:34:54,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:34:54,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2024-11-28 04:34:54,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001525609] [2024-11-28 04:34:54,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:34:54,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:34:54,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:54,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:34:54,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:34:54,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-28 04:34:54,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 825 transitions, 14016 flow. Second operand has 26 states, 26 states have (on average 8.423076923076923) internal successors, (219), 26 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:34:54,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:34:54,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-28 04:34:54,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:35:17,228 INFO L124 PetriNetUnfolderBase]: 8895/15158 cut-off events. [2024-11-28 04:35:17,229 INFO L125 PetriNetUnfolderBase]: For 410815/410815 co-relation queries the response was YES. [2024-11-28 04:35:17,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118671 conditions, 15158 events. 8895/15158 cut-off events. For 410815/410815 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 110198 event pairs, 115 based on Foata normal form. 17/15174 useless extension candidates. Maximal degree in co-relation 115308. Up to 6109 conditions per place. [2024-11-28 04:35:17,436 INFO L140 encePairwiseOnDemand]: 14/27 looper letters, 1040 selfloop transitions, 782 changer transitions 161/1986 dead transitions. [2024-11-28 04:35:17,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 1986 transitions, 35700 flow [2024-11-28 04:35:17,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-28 04:35:17,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2024-11-28 04:35:17,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 1215 transitions. [2024-11-28 04:35:17,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-28 04:35:17,442 INFO L175 Difference]: Start difference. First operand has 251 places, 825 transitions, 14016 flow. Second operand 110 states and 1215 transitions. [2024-11-28 04:35:17,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 1986 transitions, 35700 flow [2024-11-28 04:35:19,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 1986 transitions, 35603 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-11-28 04:35:19,786 INFO L231 Difference]: Finished difference. Result has 426 places, 1409 transitions, 27587 flow [2024-11-28 04:35:19,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=14001, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=110, PETRI_FLOW=27587, PETRI_PLACES=426, PETRI_TRANSITIONS=1409} [2024-11-28 04:35:19,787 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 397 predicate places. [2024-11-28 04:35:19,788 INFO L471 AbstractCegarLoop]: Abstraction has has 426 places, 1409 transitions, 27587 flow [2024-11-28 04:35:19,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.423076923076923) internal successors, (219), 26 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:35:19,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:35:19,788 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:35:19,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:35:19,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:19,989 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:35:19,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:19,989 INFO L85 PathProgramCache]: Analyzing trace with hash -183320373, now seen corresponding path program 5 times [2024-11-28 04:35:19,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:19,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248730218] [2024-11-28 04:35:19,989 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:35:19,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:20,008 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:35:20,009 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:35:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:35:20,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:20,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248730218] [2024-11-28 04:35:20,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248730218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:35:20,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64603731] [2024-11-28 04:35:20,839 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:35:20,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:20,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:35:20,842 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:35:20,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:35:20,973 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:35:20,973 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:35:20,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:35:20,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:35:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:35:21,822 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:35:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:35:23,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64603731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:35:23,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:35:23,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2024-11-28 04:35:23,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737627930] [2024-11-28 04:35:23,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:35:23,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:35:23,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:23,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:35:23,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:35:23,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-28 04:35:23,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 1409 transitions, 27587 flow. Second operand has 26 states, 26 states have (on average 9.307692307692308) internal successors, (242), 26 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:35:23,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:35:23,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-28 04:35:23,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:35:38,689 WARN L286 SmtUtils]: Spent 12.73s on a formula simplification. DAG size of input: 42 DAG size of output: 35 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:35:50,999 WARN L286 SmtUtils]: Spent 12.14s on a formula simplification. DAG size of input: 53 DAG size of output: 45 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:36:01,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:36:05,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:36:11,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:36:25,835 INFO L124 PetriNetUnfolderBase]: 9609/17168 cut-off events. [2024-11-28 04:36:25,835 INFO L125 PetriNetUnfolderBase]: For 636159/636201 co-relation queries the response was YES. [2024-11-28 04:36:26,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162370 conditions, 17168 events. 9609/17168 cut-off events. For 636159/636201 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 135565 event pairs, 103 based on Foata normal form. 41/17208 useless extension candidates. Maximal degree in co-relation 162093. Up to 6797 conditions per place. [2024-11-28 04:36:26,284 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 1340 selfloop transitions, 854 changer transitions 200/2412 dead transitions. [2024-11-28 04:36:26,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 2412 transitions, 50896 flow [2024-11-28 04:36:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-28 04:36:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2024-11-28 04:36:26,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 974 transitions. [2024-11-28 04:36:26,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4453589391860997 [2024-11-28 04:36:26,289 INFO L175 Difference]: Start difference. First operand has 426 places, 1409 transitions, 27587 flow. Second operand 81 states and 974 transitions. [2024-11-28 04:36:26,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 2412 transitions, 50896 flow [2024-11-28 04:36:32,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 2412 transitions, 47684 flow, removed 1550 selfloop flow, removed 28 redundant places. [2024-11-28 04:36:32,945 INFO L231 Difference]: Finished difference. Result has 498 places, 1823 transitions, 37579 flow [2024-11-28 04:36:32,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=25894, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=498, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=788, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=37579, PETRI_PLACES=498, PETRI_TRANSITIONS=1823} [2024-11-28 04:36:32,947 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 469 predicate places. [2024-11-28 04:36:32,947 INFO L471 AbstractCegarLoop]: Abstraction has has 498 places, 1823 transitions, 37579 flow [2024-11-28 04:36:32,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.307692307692308) internal successors, (242), 26 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:32,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:36:32,948 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:32,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:36:33,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:33,148 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:36:33,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:33,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1158197267, now seen corresponding path program 6 times [2024-11-28 04:36:33,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:33,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832194200] [2024-11-28 04:36:33,149 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:36:33,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:33,177 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 04:36:33,177 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:34,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:34,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832194200] [2024-11-28 04:36:34,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832194200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:34,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101921878] [2024-11-28 04:36:34,554 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:36:34,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:34,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:34,556 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:34,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:36:34,649 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 04:36:34,649 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:34,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:36:34,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:36,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:38,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101921878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:38,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:38,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2024-11-28 04:36:38,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258769216] [2024-11-28 04:36:38,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:38,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 04:36:38,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:38,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 04:36:38,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:36:38,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-28 04:36:38,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 1823 transitions, 37579 flow. Second operand has 32 states, 32 states have (on average 7.96875) internal successors, (255), 32 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:38,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:36:38,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-28 04:36:38,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:39:24,973 WARN L286 SmtUtils]: Spent 26.07s on a formula simplification. DAG size of input: 107 DAG size of output: 46 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:40:03,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:40:07,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:40:12,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:40:16,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:40:21,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:40:25,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:40:28,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:40:32,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:40:47,616 INFO L124 PetriNetUnfolderBase]: 12705/21686 cut-off events. [2024-11-28 04:40:47,616 INFO L125 PetriNetUnfolderBase]: For 772030/772030 co-relation queries the response was YES. [2024-11-28 04:40:48,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207965 conditions, 21686 events. 12705/21686 cut-off events. For 772030/772030 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 167046 event pairs, 126 based on Foata normal form. 26/21711 useless extension candidates. Maximal degree in co-relation 207754. Up to 10598 conditions per place. [2024-11-28 04:40:48,452 INFO L140 encePairwiseOnDemand]: 14/27 looper letters, 1700 selfloop transitions, 1049 changer transitions 159/2911 dead transitions. [2024-11-28 04:40:48,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 2911 transitions, 63480 flow [2024-11-28 04:40:48,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-28 04:40:48,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2024-11-28 04:40:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 1244 transitions. [2024-11-28 04:40:48,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4150817484150818 [2024-11-28 04:40:48,456 INFO L175 Difference]: Start difference. First operand has 498 places, 1823 transitions, 37579 flow. Second operand 111 states and 1244 transitions. [2024-11-28 04:40:48,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 2911 transitions, 63480 flow [2024-11-28 04:40:57,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 2911 transitions, 61883 flow, removed 707 selfloop flow, removed 37 redundant places. [2024-11-28 04:40:57,628 INFO L231 Difference]: Finished difference. Result has 600 places, 2282 transitions, 50909 flow [2024-11-28 04:40:57,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=36435, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=673, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1035, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=50909, PETRI_PLACES=600, PETRI_TRANSITIONS=2282} [2024-11-28 04:40:57,631 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 571 predicate places. [2024-11-28 04:40:57,631 INFO L471 AbstractCegarLoop]: Abstraction has has 600 places, 2282 transitions, 50909 flow [2024-11-28 04:40:57,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.96875) internal successors, (255), 32 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:40:57,631 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:40:57,631 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:57,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:40:57,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:40:57,832 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 04:40:57,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:57,832 INFO L85 PathProgramCache]: Analyzing trace with hash -753410837, now seen corresponding path program 7 times [2024-11-28 04:40:57,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:57,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900952646] [2024-11-28 04:40:57,832 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:40:57,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:40:58,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:58,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900952646] [2024-11-28 04:40:58,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900952646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:58,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369218050] [2024-11-28 04:40:58,952 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:40:58,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:58,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:58,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:58,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26893162-0453-4fe2-8386-5064f9cdbea0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:40:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:59,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:40:59,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:00,192 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:02,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369218050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:41:02,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:41:02,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2024-11-28 04:41:02,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245075838] [2024-11-28 04:41:02,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:41:02,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:41:02,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:02,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:41:02,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:41:02,378 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-28 04:41:02,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 2282 transitions, 50909 flow. Second operand has 24 states, 24 states have (on average 11.25) internal successors, (270), 24 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:41:02,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:41:02,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-28 04:41:02,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand