./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:17:43,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:17:43,315 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 04:17:43,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:17:43,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:17:43,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:17:43,347 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:17:43,348 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:17:43,349 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:17:43,350 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:17:43,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:17:43,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:17:43,352 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:17:43,352 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:17:43,353 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:17:43,353 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:17:43,354 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:17:43,354 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:17:43,355 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:17:43,355 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:17:43,356 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:17:43,356 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:17:43,357 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:17:43,357 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:17:43,358 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:17:43,358 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:17:43,359 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:17:43,359 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:17:43,359 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:17:43,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:17:43,360 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:17:43,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:17:43,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:17:43,377 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:17:43,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:17:43,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:17:43,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:17:43,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:17:43,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:17:43,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:17:43,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:17:43,380 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2023-11-29 04:17:43,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:17:43,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:17:43,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:17:43,672 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:17:43,673 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:17:43,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-29 04:17:46,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:17:47,062 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:17:47,063 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-29 04:17:47,084 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/data/f24e6d458/08e1296ff3d6438c88e663c08bd98fd5/FLAG519e0be6a [2023-11-29 04:17:47,098 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/data/f24e6d458/08e1296ff3d6438c88e663c08bd98fd5 [2023-11-29 04:17:47,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:17:47,103 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:17:47,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:17:47,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:17:47,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:17:47,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589bd723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47, skipping insertion in model container [2023-11-29 04:17:47,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,170 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:17:47,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:17:47,519 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:17:47,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:17:47,594 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:17:47,594 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:17:47,601 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:17:47,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47 WrapperNode [2023-11-29 04:17:47,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:17:47,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:17:47,603 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:17:47,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:17:47,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,646 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-29 04:17:47,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:17:47,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:17:47,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:17:47,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:17:47,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,661 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,679 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 04:17:47,679 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,680 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:17:47,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:17:47,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:17:47,701 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:17:47,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47" (1/1) ... [2023-11-29 04:17:47,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:17:47,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:17:47,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:17:47,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:17:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 04:17:47,784 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 04:17:47,784 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 04:17:47,784 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 04:17:47,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:17:47,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:17:47,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:17:47,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 04:17:47,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:17:47,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:17:47,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:17:47,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:17:47,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:17:47,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:17:47,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 04:17:47,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:17:47,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:17:47,789 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:17:47,950 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:17:47,953 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:17:48,132 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:17:48,253 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:17:48,253 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 04:17:48,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:17:48 BoogieIcfgContainer [2023-11-29 04:17:48,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:17:48,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:17:48,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:17:48,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:17:48,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:17:47" (1/3) ... [2023-11-29 04:17:48,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269441f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:17:48, skipping insertion in model container [2023-11-29 04:17:48,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:17:47" (2/3) ... [2023-11-29 04:17:48,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269441f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:17:48, skipping insertion in model container [2023-11-29 04:17:48,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:17:48" (3/3) ... [2023-11-29 04:17:48,264 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-11-29 04:17:48,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:17:48,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 04:17:48,282 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:17:48,326 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 04:17:48,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 78 flow [2023-11-29 04:17:48,393 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-11-29 04:17:48,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:17:48,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-29 04:17:48,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 78 flow [2023-11-29 04:17:48,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 33 transitions, 72 flow [2023-11-29 04:17:48,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:17:48,419 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b077dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:17:48,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-29 04:17:48,424 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:17:48,424 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 04:17:48,425 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:17:48,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:48,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 04:17:48,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:48,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:48,432 INFO L85 PathProgramCache]: Analyzing trace with hash 6737, now seen corresponding path program 1 times [2023-11-29 04:17:48,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:48,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039329294] [2023-11-29 04:17:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:48,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:17:48,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:48,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039329294] [2023-11-29 04:17:48,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039329294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:17:48,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:17:48,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:17:48,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472679091] [2023-11-29 04:17:48,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:17:48,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:17:48,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:17:48,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:17:48,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-29 04:17:48,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:48,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:48,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-29 04:17:48,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:49,021 INFO L124 PetriNetUnfolderBase]: 88/193 cut-off events. [2023-11-29 04:17:49,021 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 04:17:49,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 193 events. 88/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 711 event pairs, 32 based on Foata normal form. 15/191 useless extension candidates. Maximal degree in co-relation 333. Up to 87 conditions per place. [2023-11-29 04:17:49,028 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 18 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-11-29 04:17:49,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 118 flow [2023-11-29 04:17:49,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:17:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:17:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-29 04:17:49,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-29 04:17:49,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-29 04:17:49,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-29 04:17:49,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:49,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-29 04:17:49,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,062 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 72 flow. Second operand 3 states and 72 transitions. [2023-11-29 04:17:49,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 118 flow [2023-11-29 04:17:49,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:17:49,070 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2023-11-29 04:17:49,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-29 04:17:49,077 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-29 04:17:49,077 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2023-11-29 04:17:49,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:49,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 04:17:49,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:17:49,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:49,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:49,080 INFO L85 PathProgramCache]: Analyzing trace with hash 6738, now seen corresponding path program 1 times [2023-11-29 04:17:49,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:49,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323316627] [2023-11-29 04:17:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:49,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:49,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:17:49,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:49,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323316627] [2023-11-29 04:17:49,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323316627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:17:49,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:17:49,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:17:49,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982196892] [2023-11-29 04:17:49,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:17:49,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:17:49,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:17:49,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:17:49,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 04:17:49,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:49,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 04:17:49,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:49,332 INFO L124 PetriNetUnfolderBase]: 70/165 cut-off events. [2023-11-29 04:17:49,333 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 04:17:49,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 165 events. 70/165 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 624 event pairs, 32 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 288. Up to 86 conditions per place. [2023-11-29 04:17:49,336 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-29 04:17:49,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 112 flow [2023-11-29 04:17:49,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:17:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:17:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-29 04:17:49,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-29 04:17:49,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-29 04:17:49,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-29 04:17:49,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:49,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-29 04:17:49,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,344 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 71 transitions. [2023-11-29 04:17:49,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 112 flow [2023-11-29 04:17:49,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:17:49,347 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 62 flow [2023-11-29 04:17:49,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-29 04:17:49,349 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-29 04:17:49,349 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 62 flow [2023-11-29 04:17:49,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:49,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 04:17:49,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:17:49,350 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:49,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:49,351 INFO L85 PathProgramCache]: Analyzing trace with hash 200868327, now seen corresponding path program 1 times [2023-11-29 04:17:49,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:49,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434619606] [2023-11-29 04:17:49,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:49,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:17:49,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434619606] [2023-11-29 04:17:49,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434619606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:17:49,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:17:49,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:17:49,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794700948] [2023-11-29 04:17:49,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:17:49,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:17:49,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:17:49,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:17:49,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 04:17:49,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:49,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 04:17:49,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:49,545 INFO L124 PetriNetUnfolderBase]: 70/164 cut-off events. [2023-11-29 04:17:49,545 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 04:17:49,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 164 events. 70/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 618 event pairs, 32 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 287. Up to 86 conditions per place. [2023-11-29 04:17:49,549 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-29 04:17:49,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 110 flow [2023-11-29 04:17:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:17:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:17:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-29 04:17:49,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-29 04:17:49,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-29 04:17:49,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-29 04:17:49,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:49,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-29 04:17:49,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,556 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 62 flow. Second operand 3 states and 71 transitions. [2023-11-29 04:17:49,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 110 flow [2023-11-29 04:17:49,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:17:49,559 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 60 flow [2023-11-29 04:17:49,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-29 04:17:49,560 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-29 04:17:49,561 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 60 flow [2023-11-29 04:17:49,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:49,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 04:17:49,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:17:49,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:49,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:49,563 INFO L85 PathProgramCache]: Analyzing trace with hash 200868326, now seen corresponding path program 1 times [2023-11-29 04:17:49,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:49,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819171134] [2023-11-29 04:17:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:49,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:17:49,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:49,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819171134] [2023-11-29 04:17:49,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819171134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:17:49,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:17:49,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:17:49,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444777489] [2023-11-29 04:17:49,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:17:49,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:17:49,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:49,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:17:49,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:17:49,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-29 04:17:49,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:49,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-29 04:17:49,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:49,699 INFO L124 PetriNetUnfolderBase]: 73/166 cut-off events. [2023-11-29 04:17:49,700 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 04:17:49,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 166 events. 73/166 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 600 event pairs, 34 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 295. Up to 92 conditions per place. [2023-11-29 04:17:49,702 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-29 04:17:49,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 110 flow [2023-11-29 04:17:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:17:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:17:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-29 04:17:49,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2023-11-29 04:17:49,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-29 04:17:49,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-29 04:17:49,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:49,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-29 04:17:49,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,708 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 60 flow. Second operand 3 states and 69 transitions. [2023-11-29 04:17:49,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 110 flow [2023-11-29 04:17:49,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:17:49,709 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 58 flow [2023-11-29 04:17:49,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-29 04:17:49,711 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-29 04:17:49,711 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 58 flow [2023-11-29 04:17:49,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:49,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:49,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:17:49,712 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:49,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:49,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1605654404, now seen corresponding path program 1 times [2023-11-29 04:17:49,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:49,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115921242] [2023-11-29 04:17:49,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:49,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:17:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:49,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115921242] [2023-11-29 04:17:49,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115921242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:17:49,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:17:49,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:17:49,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367187531] [2023-11-29 04:17:49,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:17:49,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:17:49,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:49,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:17:49,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:17:49,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 04:17:49,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:49,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:49,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 04:17:49,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:50,003 INFO L124 PetriNetUnfolderBase]: 70/154 cut-off events. [2023-11-29 04:17:50,003 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 04:17:50,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 154 events. 70/154 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 550 event pairs, 32 based on Foata normal form. 9/148 useless extension candidates. Maximal degree in co-relation 277. Up to 86 conditions per place. [2023-11-29 04:17:50,006 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 11 selfloop transitions, 1 changer transitions 7/30 dead transitions. [2023-11-29 04:17:50,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 106 flow [2023-11-29 04:17:50,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:17:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:17:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2023-11-29 04:17:50,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2023-11-29 04:17:50,008 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 88 transitions. [2023-11-29 04:17:50,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 88 transitions. [2023-11-29 04:17:50,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:50,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 88 transitions. [2023-11-29 04:17:50,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,010 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,011 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 58 flow. Second operand 4 states and 88 transitions. [2023-11-29 04:17:50,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 106 flow [2023-11-29 04:17:50,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:17:50,012 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 52 flow [2023-11-29 04:17:50,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-11-29 04:17:50,014 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-29 04:17:50,014 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 52 flow [2023-11-29 04:17:50,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:50,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:50,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:17:50,015 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:50,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:50,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1605653309, now seen corresponding path program 1 times [2023-11-29 04:17:50,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:50,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709749876] [2023-11-29 04:17:50,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:50,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:17:50,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:50,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709749876] [2023-11-29 04:17:50,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709749876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:17:50,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:17:50,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:17:50,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663330371] [2023-11-29 04:17:50,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:17:50,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:17:50,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:50,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:17:50,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:17:50,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:17:50,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:50,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:17:50,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:50,347 INFO L124 PetriNetUnfolderBase]: 273/483 cut-off events. [2023-11-29 04:17:50,347 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:17:50,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 483 events. 273/483 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1906 event pairs, 45 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 917. Up to 181 conditions per place. [2023-11-29 04:17:50,351 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 25 selfloop transitions, 4 changer transitions 20/55 dead transitions. [2023-11-29 04:17:50,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 55 transitions, 214 flow [2023-11-29 04:17:50,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:17:50,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:17:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2023-11-29 04:17:50,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2023-11-29 04:17:50,355 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 129 transitions. [2023-11-29 04:17:50,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 129 transitions. [2023-11-29 04:17:50,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:50,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 129 transitions. [2023-11-29 04:17:50,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,358 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,359 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 6 states and 129 transitions. [2023-11-29 04:17:50,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 55 transitions, 214 flow [2023-11-29 04:17:50,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 55 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:17:50,361 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 78 flow [2023-11-29 04:17:50,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-11-29 04:17:50,362 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-11-29 04:17:50,362 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 78 flow [2023-11-29 04:17:50,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:50,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:50,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:17:50,364 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:50,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:50,364 INFO L85 PathProgramCache]: Analyzing trace with hash -204762607, now seen corresponding path program 1 times [2023-11-29 04:17:50,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:50,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264866299] [2023-11-29 04:17:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:50,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:17:50,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:50,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264866299] [2023-11-29 04:17:50,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264866299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:17:50,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:17:50,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:17:50,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067556387] [2023-11-29 04:17:50,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:17:50,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:17:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:50,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:17:50,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:17:50,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:17:50,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:50,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:17:50,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:50,728 INFO L124 PetriNetUnfolderBase]: 382/711 cut-off events. [2023-11-29 04:17:50,729 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2023-11-29 04:17:50,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 711 events. 382/711 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3123 event pairs, 65 based on Foata normal form. 33/743 useless extension candidates. Maximal degree in co-relation 1598. Up to 246 conditions per place. [2023-11-29 04:17:50,735 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 9 changer transitions 20/81 dead transitions. [2023-11-29 04:17:50,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 81 transitions, 386 flow [2023-11-29 04:17:50,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:17:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:17:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2023-11-29 04:17:50,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-29 04:17:50,737 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 189 transitions. [2023-11-29 04:17:50,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 189 transitions. [2023-11-29 04:17:50,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:50,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 189 transitions. [2023-11-29 04:17:50,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.0) internal successors, (189), 9 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,742 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,742 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 78 flow. Second operand 9 states and 189 transitions. [2023-11-29 04:17:50,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 81 transitions, 386 flow [2023-11-29 04:17:50,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 81 transitions, 370 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-29 04:17:50,749 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 163 flow [2023-11-29 04:17:50,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=163, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2023-11-29 04:17:50,751 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-11-29 04:17:50,751 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 163 flow [2023-11-29 04:17:50,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:50,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:50,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:17:50,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:50,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:50,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1564829837, now seen corresponding path program 2 times [2023-11-29 04:17:50,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:50,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251884974] [2023-11-29 04:17:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:50,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:50,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:17:50,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:50,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251884974] [2023-11-29 04:17:50,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251884974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:17:50,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:17:50,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:17:50,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425808649] [2023-11-29 04:17:50,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:17:50,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:17:50,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:50,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:17:50,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:17:50,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:17:50,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:50,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:50,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:17:50,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:51,175 INFO L124 PetriNetUnfolderBase]: 373/699 cut-off events. [2023-11-29 04:17:51,175 INFO L125 PetriNetUnfolderBase]: For 1121/1133 co-relation queries the response was YES. [2023-11-29 04:17:51,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1967 conditions, 699 events. 373/699 cut-off events. For 1121/1133 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3080 event pairs, 80 based on Foata normal form. 48/746 useless extension candidates. Maximal degree in co-relation 1949. Up to 237 conditions per place. [2023-11-29 04:17:51,181 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 42 selfloop transitions, 15 changer transitions 32/95 dead transitions. [2023-11-29 04:17:51,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 95 transitions, 585 flow [2023-11-29 04:17:51,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:17:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:17:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2023-11-29 04:17:51,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5885714285714285 [2023-11-29 04:17:51,183 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 206 transitions. [2023-11-29 04:17:51,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 206 transitions. [2023-11-29 04:17:51,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:51,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 206 transitions. [2023-11-29 04:17:51,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:51,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:51,187 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:51,187 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 163 flow. Second operand 10 states and 206 transitions. [2023-11-29 04:17:51,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 95 transitions, 585 flow [2023-11-29 04:17:51,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 95 transitions, 575 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-29 04:17:51,197 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 277 flow [2023-11-29 04:17:51,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=277, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-11-29 04:17:51,198 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-11-29 04:17:51,198 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 277 flow [2023-11-29 04:17:51,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:51,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:51,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:51,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:17:51,199 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:51,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:51,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1757896090, now seen corresponding path program 1 times [2023-11-29 04:17:51,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:51,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089318448] [2023-11-29 04:17:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:51,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:17:51,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:51,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089318448] [2023-11-29 04:17:51,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089318448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:17:51,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:17:51,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:17:51,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920582459] [2023-11-29 04:17:51,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:17:51,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:17:51,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:51,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:17:51,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:17:51,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:17:51,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 277 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:51,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:51,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:17:51,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:51,687 INFO L124 PetriNetUnfolderBase]: 508/942 cut-off events. [2023-11-29 04:17:51,687 INFO L125 PetriNetUnfolderBase]: For 3595/3607 co-relation queries the response was YES. [2023-11-29 04:17:51,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3145 conditions, 942 events. 508/942 cut-off events. For 3595/3607 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4360 event pairs, 53 based on Foata normal form. 39/978 useless extension candidates. Maximal degree in co-relation 3120. Up to 238 conditions per place. [2023-11-29 04:17:51,697 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 56 selfloop transitions, 21 changer transitions 23/106 dead transitions. [2023-11-29 04:17:51,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 106 transitions, 781 flow [2023-11-29 04:17:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:17:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:17:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2023-11-29 04:17:51,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5948051948051948 [2023-11-29 04:17:51,701 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 229 transitions. [2023-11-29 04:17:51,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 229 transitions. [2023-11-29 04:17:51,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:51,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 229 transitions. [2023-11-29 04:17:51,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:51,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:51,705 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:51,705 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 277 flow. Second operand 11 states and 229 transitions. [2023-11-29 04:17:51,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 106 transitions, 781 flow [2023-11-29 04:17:51,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 106 transitions, 716 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-11-29 04:17:51,719 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 385 flow [2023-11-29 04:17:51,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=385, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2023-11-29 04:17:51,720 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-11-29 04:17:51,721 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 385 flow [2023-11-29 04:17:51,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:51,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:51,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:51,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:17:51,722 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:51,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:51,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1152289066, now seen corresponding path program 2 times [2023-11-29 04:17:51,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:51,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808629626] [2023-11-29 04:17:51,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:51,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:17:51,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:51,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808629626] [2023-11-29 04:17:51,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808629626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:17:51,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:17:51,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:17:51,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112804778] [2023-11-29 04:17:51,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:17:51,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:17:51,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:51,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:17:51,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:17:51,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:17:51,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 385 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:51,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:51,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:17:51,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:52,167 INFO L124 PetriNetUnfolderBase]: 454/861 cut-off events. [2023-11-29 04:17:52,167 INFO L125 PetriNetUnfolderBase]: For 5137/5149 co-relation queries the response was YES. [2023-11-29 04:17:52,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3240 conditions, 861 events. 454/861 cut-off events. For 5137/5149 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3970 event pairs, 71 based on Foata normal form. 57/915 useless extension candidates. Maximal degree in co-relation 3210. Up to 226 conditions per place. [2023-11-29 04:17:52,176 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 44 selfloop transitions, 21 changer transitions 31/102 dead transitions. [2023-11-29 04:17:52,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 102 transitions, 917 flow [2023-11-29 04:17:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:17:52,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:17:52,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2023-11-29 04:17:52,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2023-11-29 04:17:52,178 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 205 transitions. [2023-11-29 04:17:52,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 205 transitions. [2023-11-29 04:17:52,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:52,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 205 transitions. [2023-11-29 04:17:52,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.5) internal successors, (205), 10 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:52,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:52,182 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:52,182 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 385 flow. Second operand 10 states and 205 transitions. [2023-11-29 04:17:52,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 102 transitions, 917 flow [2023-11-29 04:17:52,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 102 transitions, 842 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-11-29 04:17:52,198 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 441 flow [2023-11-29 04:17:52,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=441, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2023-11-29 04:17:52,199 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-11-29 04:17:52,200 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 441 flow [2023-11-29 04:17:52,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:52,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:52,200 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:52,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:17:52,201 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:52,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:52,201 INFO L85 PathProgramCache]: Analyzing trace with hash 427582615, now seen corresponding path program 1 times [2023-11-29 04:17:52,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:52,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359494687] [2023-11-29 04:17:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:52,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:17:52,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:52,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359494687] [2023-11-29 04:17:52,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359494687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:17:52,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975222822] [2023-11-29 04:17:52,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:52,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:17:52,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:17:52,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:17:52,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:17:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:52,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:17:52,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:17:52,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:17:52,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:17:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:17:52,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975222822] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:17:52,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:17:52,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 04:17:52,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421435637] [2023-11-29 04:17:52,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:17:52,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:17:52,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:52,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:17:52,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:17:52,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:17:52,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 441 flow. Second operand has 13 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:52,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:52,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:17:52,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:53,508 INFO L124 PetriNetUnfolderBase]: 652/1200 cut-off events. [2023-11-29 04:17:53,509 INFO L125 PetriNetUnfolderBase]: For 9432/9444 co-relation queries the response was YES. [2023-11-29 04:17:53,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4865 conditions, 1200 events. 652/1200 cut-off events. For 9432/9444 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5296 event pairs, 59 based on Foata normal form. 57/1254 useless extension candidates. Maximal degree in co-relation 4833. Up to 198 conditions per place. [2023-11-29 04:17:53,522 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 66 selfloop transitions, 36 changer transitions 56/164 dead transitions. [2023-11-29 04:17:53,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 164 transitions, 1531 flow [2023-11-29 04:17:53,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 04:17:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 04:17:53,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 388 transitions. [2023-11-29 04:17:53,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5834586466165413 [2023-11-29 04:17:53,526 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 388 transitions. [2023-11-29 04:17:53,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 388 transitions. [2023-11-29 04:17:53,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:53,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 388 transitions. [2023-11-29 04:17:53,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 20.42105263157895) internal successors, (388), 19 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:53,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 35.0) internal successors, (700), 20 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:53,555 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 35.0) internal successors, (700), 20 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:53,555 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 441 flow. Second operand 19 states and 388 transitions. [2023-11-29 04:17:53,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 164 transitions, 1531 flow [2023-11-29 04:17:53,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 164 transitions, 1396 flow, removed 50 selfloop flow, removed 9 redundant places. [2023-11-29 04:17:53,575 INFO L231 Difference]: Finished difference. Result has 88 places, 66 transitions, 766 flow [2023-11-29 04:17:53,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=766, PETRI_PLACES=88, PETRI_TRANSITIONS=66} [2023-11-29 04:17:53,576 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 52 predicate places. [2023-11-29 04:17:53,576 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 66 transitions, 766 flow [2023-11-29 04:17:53,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:53,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:53,577 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:53,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:17:53,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:17:53,778 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:53,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:53,778 INFO L85 PathProgramCache]: Analyzing trace with hash 465565817, now seen corresponding path program 1 times [2023-11-29 04:17:53,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:53,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364645911] [2023-11-29 04:17:53,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:53,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:17:54,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:54,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364645911] [2023-11-29 04:17:54,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364645911] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:17:54,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17557203] [2023-11-29 04:17:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:54,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:17:54,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:17:54,025 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:17:54,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:17:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:54,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:17:54,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:17:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:17:54,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:17:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:17:54,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17557203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:17:54,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:17:54,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-29 04:17:54,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585785514] [2023-11-29 04:17:54,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:17:54,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:17:54,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:54,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:17:54,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:17:54,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:17:54,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 66 transitions, 766 flow. Second operand has 17 states, 17 states have (on average 15.294117647058824) internal successors, (260), 17 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:54,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:54,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:17:54,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:55,463 INFO L124 PetriNetUnfolderBase]: 850/1611 cut-off events. [2023-11-29 04:17:55,463 INFO L125 PetriNetUnfolderBase]: For 18938/18950 co-relation queries the response was YES. [2023-11-29 04:17:55,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7316 conditions, 1611 events. 850/1611 cut-off events. For 18938/18950 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7230 event pairs, 215 based on Foata normal form. 93/1703 useless extension candidates. Maximal degree in co-relation 7278. Up to 738 conditions per place. [2023-11-29 04:17:55,480 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 94 selfloop transitions, 27 changer transitions 89/216 dead transitions. [2023-11-29 04:17:55,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 216 transitions, 2436 flow [2023-11-29 04:17:55,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 04:17:55,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 04:17:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 501 transitions. [2023-11-29 04:17:55,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725714285714286 [2023-11-29 04:17:55,485 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 501 transitions. [2023-11-29 04:17:55,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 501 transitions. [2023-11-29 04:17:55,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:55,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 501 transitions. [2023-11-29 04:17:55,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 20.04) internal successors, (501), 25 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:55,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 35.0) internal successors, (910), 26 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:55,491 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 35.0) internal successors, (910), 26 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:55,492 INFO L175 Difference]: Start difference. First operand has 88 places, 66 transitions, 766 flow. Second operand 25 states and 501 transitions. [2023-11-29 04:17:55,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 216 transitions, 2436 flow [2023-11-29 04:17:55,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 216 transitions, 1929 flow, removed 241 selfloop flow, removed 10 redundant places. [2023-11-29 04:17:55,537 INFO L231 Difference]: Finished difference. Result has 116 places, 80 transitions, 862 flow [2023-11-29 04:17:55,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=862, PETRI_PLACES=116, PETRI_TRANSITIONS=80} [2023-11-29 04:17:55,538 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 80 predicate places. [2023-11-29 04:17:55,538 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 80 transitions, 862 flow [2023-11-29 04:17:55,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.294117647058824) internal successors, (260), 17 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:55,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:55,539 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:55,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:17:55,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 04:17:55,740 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:55,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:55,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1043555207, now seen corresponding path program 2 times [2023-11-29 04:17:55,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:55,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759490617] [2023-11-29 04:17:55,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:55,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:17:55,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:55,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759490617] [2023-11-29 04:17:55,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759490617] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:17:55,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659402107] [2023-11-29 04:17:55,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:17:55,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:17:55,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:17:55,958 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:17:55,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:17:56,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:17:56,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:17:56,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:17:56,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:17:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:17:56,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:17:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:17:56,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659402107] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:17:56,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:17:56,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-29 04:17:56,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614763780] [2023-11-29 04:17:56,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:17:56,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:17:56,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:56,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:17:56,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:17:56,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:17:56,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 80 transitions, 862 flow. Second operand has 17 states, 17 states have (on average 15.352941176470589) internal successors, (261), 17 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:56,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:56,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:17:56,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:57,768 INFO L124 PetriNetUnfolderBase]: 1444/2754 cut-off events. [2023-11-29 04:17:57,768 INFO L125 PetriNetUnfolderBase]: For 62749/62761 co-relation queries the response was YES. [2023-11-29 04:17:57,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14424 conditions, 2754 events. 1444/2754 cut-off events. For 62749/62761 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 14929 event pairs, 136 based on Foata normal form. 93/2846 useless extension candidates. Maximal degree in co-relation 14373. Up to 492 conditions per place. [2023-11-29 04:17:57,806 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 127 selfloop transitions, 81 changer transitions 91/305 dead transitions. [2023-11-29 04:17:57,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 305 transitions, 3900 flow [2023-11-29 04:17:57,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 04:17:57,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-29 04:17:57,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 649 transitions. [2023-11-29 04:17:57,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5794642857142858 [2023-11-29 04:17:57,811 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 649 transitions. [2023-11-29 04:17:57,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 649 transitions. [2023-11-29 04:17:57,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:57,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 649 transitions. [2023-11-29 04:17:57,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 20.28125) internal successors, (649), 32 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:57,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 35.0) internal successors, (1155), 33 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:57,821 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 35.0) internal successors, (1155), 33 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:57,821 INFO L175 Difference]: Start difference. First operand has 116 places, 80 transitions, 862 flow. Second operand 32 states and 649 transitions. [2023-11-29 04:17:57,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 305 transitions, 3900 flow [2023-11-29 04:17:57,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 305 transitions, 3239 flow, removed 321 selfloop flow, removed 13 redundant places. [2023-11-29 04:17:57,932 INFO L231 Difference]: Finished difference. Result has 148 places, 123 transitions, 1649 flow [2023-11-29 04:17:57,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1649, PETRI_PLACES=148, PETRI_TRANSITIONS=123} [2023-11-29 04:17:57,934 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 112 predicate places. [2023-11-29 04:17:57,934 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 123 transitions, 1649 flow [2023-11-29 04:17:57,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.352941176470589) internal successors, (261), 17 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:57,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:57,935 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:57,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:17:58,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 04:17:58,139 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:17:58,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:58,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2005901211, now seen corresponding path program 3 times [2023-11-29 04:17:58,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:58,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833151940] [2023-11-29 04:17:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:58,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:17:58,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:58,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833151940] [2023-11-29 04:17:58,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833151940] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:17:58,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986117070] [2023-11-29 04:17:58,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:17:58,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:17:58,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:17:58,342 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:17:58,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:17:58,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 04:17:58,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:17:58,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:17:58,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:17:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:17:58,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:17:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:17:58,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986117070] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:17:58,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:17:58,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-29 04:17:58,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124512805] [2023-11-29 04:17:58,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:17:58,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:17:58,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:58,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:17:58,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:17:58,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:17:58,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 123 transitions, 1649 flow. Second operand has 17 states, 17 states have (on average 15.352941176470589) internal successors, (261), 17 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:17:58,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:17:58,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:17:58,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:18:00,563 INFO L124 PetriNetUnfolderBase]: 2038/3845 cut-off events. [2023-11-29 04:18:00,563 INFO L125 PetriNetUnfolderBase]: For 151397/151403 co-relation queries the response was YES. [2023-11-29 04:18:00,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23059 conditions, 3845 events. 2038/3845 cut-off events. For 151397/151403 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 22421 event pairs, 96 based on Foata normal form. 123/3967 useless extension candidates. Maximal degree in co-relation 22993. Up to 720 conditions per place. [2023-11-29 04:18:00,604 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 131 selfloop transitions, 128 changer transitions 113/378 dead transitions. [2023-11-29 04:18:00,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 378 transitions, 5876 flow [2023-11-29 04:18:00,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 04:18:00,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-29 04:18:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 710 transitions. [2023-11-29 04:18:00,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5795918367346938 [2023-11-29 04:18:00,608 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 710 transitions. [2023-11-29 04:18:00,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 710 transitions. [2023-11-29 04:18:00,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:18:00,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 710 transitions. [2023-11-29 04:18:00,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 20.285714285714285) internal successors, (710), 35 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:00,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 35.0) internal successors, (1260), 36 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:00,614 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 35.0) internal successors, (1260), 36 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:00,614 INFO L175 Difference]: Start difference. First operand has 148 places, 123 transitions, 1649 flow. Second operand 35 states and 710 transitions. [2023-11-29 04:18:00,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 378 transitions, 5876 flow [2023-11-29 04:18:00,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 378 transitions, 5029 flow, removed 407 selfloop flow, removed 15 redundant places. [2023-11-29 04:18:00,880 INFO L231 Difference]: Finished difference. Result has 180 places, 170 transitions, 2610 flow [2023-11-29 04:18:00,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2610, PETRI_PLACES=180, PETRI_TRANSITIONS=170} [2023-11-29 04:18:00,881 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 144 predicate places. [2023-11-29 04:18:00,881 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 170 transitions, 2610 flow [2023-11-29 04:18:00,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.352941176470589) internal successors, (261), 17 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:00,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:18:00,882 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:18:00,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 04:18:01,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:18:01,086 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:18:01,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:18:01,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1590899430, now seen corresponding path program 4 times [2023-11-29 04:18:01,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:18:01,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376465435] [2023-11-29 04:18:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:18:01,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:18:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:18:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:18:01,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:18:01,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376465435] [2023-11-29 04:18:01,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376465435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:18:01,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551768865] [2023-11-29 04:18:01,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:18:01,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:18:01,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:18:01,357 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:18:01,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:18:01,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:18:01,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:18:01,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:18:01,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:18:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:18:01,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:18:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:18:01,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551768865] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:18:01,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:18:01,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-11-29 04:18:01,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346182193] [2023-11-29 04:18:01,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:18:01,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 04:18:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:18:01,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 04:18:01,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2023-11-29 04:18:01,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:18:01,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 170 transitions, 2610 flow. Second operand has 26 states, 26 states have (on average 15.038461538461538) internal successors, (391), 26 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:01,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:18:01,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:18:01,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:18:04,594 INFO L124 PetriNetUnfolderBase]: 3397/6259 cut-off events. [2023-11-29 04:18:04,595 INFO L125 PetriNetUnfolderBase]: For 387510/387516 co-relation queries the response was YES. [2023-11-29 04:18:04,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45787 conditions, 6259 events. 3397/6259 cut-off events. For 387510/387516 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 36039 event pairs, 89 based on Foata normal form. 123/6379 useless extension candidates. Maximal degree in co-relation 45710. Up to 1242 conditions per place. [2023-11-29 04:18:04,693 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 170 selfloop transitions, 222 changer transitions 160/558 dead transitions. [2023-11-29 04:18:04,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 558 transitions, 11564 flow [2023-11-29 04:18:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-29 04:18:04,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-29 04:18:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 1036 transitions. [2023-11-29 04:18:04,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5803921568627451 [2023-11-29 04:18:04,697 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 1036 transitions. [2023-11-29 04:18:04,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 1036 transitions. [2023-11-29 04:18:04,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:18:04,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 1036 transitions. [2023-11-29 04:18:04,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 20.313725490196077) internal successors, (1036), 51 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:04,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 35.0) internal successors, (1820), 52 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:04,704 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 35.0) internal successors, (1820), 52 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:04,704 INFO L175 Difference]: Start difference. First operand has 180 places, 170 transitions, 2610 flow. Second operand 51 states and 1036 transitions. [2023-11-29 04:18:04,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 558 transitions, 11564 flow [2023-11-29 04:18:05,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 558 transitions, 9403 flow, removed 1050 selfloop flow, removed 19 redundant places. [2023-11-29 04:18:05,429 INFO L231 Difference]: Finished difference. Result has 234 places, 280 transitions, 5492 flow [2023-11-29 04:18:05,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2105, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=5492, PETRI_PLACES=234, PETRI_TRANSITIONS=280} [2023-11-29 04:18:05,430 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 198 predicate places. [2023-11-29 04:18:05,430 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 280 transitions, 5492 flow [2023-11-29 04:18:05,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 15.038461538461538) internal successors, (391), 26 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:05,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:18:05,431 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:18:05,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:18:05,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 04:18:05,631 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:18:05,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:18:05,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1258622615, now seen corresponding path program 5 times [2023-11-29 04:18:05,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:18:05,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411773229] [2023-11-29 04:18:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:18:05,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:18:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:18:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:06,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:18:06,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411773229] [2023-11-29 04:18:06,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411773229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:18:06,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726806306] [2023-11-29 04:18:06,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:18:06,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:18:06,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:18:06,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:18:06,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:18:06,215 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-11-29 04:18:06,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:18:06,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:18:06,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:18:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:06,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:18:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:06,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726806306] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:18:06,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:18:06,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2023-11-29 04:18:06,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037390114] [2023-11-29 04:18:06,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:18:06,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 04:18:06,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:18:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 04:18:06,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 04:18:06,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:18:06,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 280 transitions, 5492 flow. Second operand has 41 states, 41 states have (on average 15.146341463414634) internal successors, (621), 41 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:06,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:18:06,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:18:06,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:18:09,742 INFO L124 PetriNetUnfolderBase]: 3433/6498 cut-off events. [2023-11-29 04:18:09,742 INFO L125 PetriNetUnfolderBase]: For 513772/513778 co-relation queries the response was YES. [2023-11-29 04:18:09,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48038 conditions, 6498 events. 3433/6498 cut-off events. For 513772/513778 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 38955 event pairs, 1349 based on Foata normal form. 69/6566 useless extension candidates. Maximal degree in co-relation 47937. Up to 4770 conditions per place. [2023-11-29 04:18:09,809 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 325 selfloop transitions, 47 changer transitions 95/473 dead transitions. [2023-11-29 04:18:09,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 473 transitions, 10528 flow [2023-11-29 04:18:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 04:18:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 04:18:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 649 transitions. [2023-11-29 04:18:09,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2023-11-29 04:18:09,812 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 649 transitions. [2023-11-29 04:18:09,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 649 transitions. [2023-11-29 04:18:09,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:18:09,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 649 transitions. [2023-11-29 04:18:09,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 19.666666666666668) internal successors, (649), 33 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:09,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 35.0) internal successors, (1190), 34 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:09,819 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 35.0) internal successors, (1190), 34 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:09,819 INFO L175 Difference]: Start difference. First operand has 234 places, 280 transitions, 5492 flow. Second operand 33 states and 649 transitions. [2023-11-29 04:18:09,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 473 transitions, 10528 flow [2023-11-29 04:18:11,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 473 transitions, 7080 flow, removed 1700 selfloop flow, removed 19 redundant places. [2023-11-29 04:18:11,296 INFO L231 Difference]: Finished difference. Result has 249 places, 296 transitions, 4171 flow [2023-11-29 04:18:11,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3628, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4171, PETRI_PLACES=249, PETRI_TRANSITIONS=296} [2023-11-29 04:18:11,297 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 213 predicate places. [2023-11-29 04:18:11,297 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 296 transitions, 4171 flow [2023-11-29 04:18:11,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 15.146341463414634) internal successors, (621), 41 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:11,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:18:11,298 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:18:11,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:18:11,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 04:18:11,499 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:18:11,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:18:11,499 INFO L85 PathProgramCache]: Analyzing trace with hash -360026285, now seen corresponding path program 6 times [2023-11-29 04:18:11,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:18:11,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829936687] [2023-11-29 04:18:11,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:18:11,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:18:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:18:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:12,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:18:12,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829936687] [2023-11-29 04:18:12,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829936687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:18:12,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109541127] [2023-11-29 04:18:12,068 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 04:18:12,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:18:12,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:18:12,069 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:18:12,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:18:12,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-11-29 04:18:12,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:18:12,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:18:12,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:18:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:12,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:18:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:13,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109541127] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:18:13,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:18:13,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2023-11-29 04:18:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343107315] [2023-11-29 04:18:13,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:18:13,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 04:18:13,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:18:13,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 04:18:13,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 04:18:13,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:18:13,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 296 transitions, 4171 flow. Second operand has 41 states, 41 states have (on average 15.146341463414634) internal successors, (621), 41 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:13,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:18:13,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:18:13,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:18:16,698 INFO L124 PetriNetUnfolderBase]: 3937/7651 cut-off events. [2023-11-29 04:18:16,698 INFO L125 PetriNetUnfolderBase]: For 418313/418319 co-relation queries the response was YES. [2023-11-29 04:18:16,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45444 conditions, 7651 events. 3937/7651 cut-off events. For 418313/418319 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 47906 event pairs, 866 based on Foata normal form. 69/7719 useless extension candidates. Maximal degree in co-relation 45340. Up to 3568 conditions per place. [2023-11-29 04:18:16,771 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 343 selfloop transitions, 166 changer transitions 135/650 dead transitions. [2023-11-29 04:18:16,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 650 transitions, 10145 flow [2023-11-29 04:18:16,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 04:18:16,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-11-29 04:18:16,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 1038 transitions. [2023-11-29 04:18:16,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595687331536389 [2023-11-29 04:18:16,775 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 1038 transitions. [2023-11-29 04:18:16,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 1038 transitions. [2023-11-29 04:18:16,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:18:16,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 1038 transitions. [2023-11-29 04:18:16,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 19.58490566037736) internal successors, (1038), 53 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:16,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 35.0) internal successors, (1890), 54 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:16,785 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 35.0) internal successors, (1890), 54 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:16,785 INFO L175 Difference]: Start difference. First operand has 249 places, 296 transitions, 4171 flow. Second operand 53 states and 1038 transitions. [2023-11-29 04:18:16,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 650 transitions, 10145 flow [2023-11-29 04:18:18,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 650 transitions, 9550 flow, removed 270 selfloop flow, removed 21 redundant places. [2023-11-29 04:18:18,056 INFO L231 Difference]: Finished difference. Result has 292 places, 352 transitions, 5370 flow [2023-11-29 04:18:18,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3840, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=5370, PETRI_PLACES=292, PETRI_TRANSITIONS=352} [2023-11-29 04:18:18,057 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 256 predicate places. [2023-11-29 04:18:18,057 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 352 transitions, 5370 flow [2023-11-29 04:18:18,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 15.146341463414634) internal successors, (621), 41 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:18,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:18:18,058 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:18:18,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:18:18,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:18:18,258 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:18:18,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:18:18,259 INFO L85 PathProgramCache]: Analyzing trace with hash 79520023, now seen corresponding path program 7 times [2023-11-29 04:18:18,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:18:18,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117852194] [2023-11-29 04:18:18,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:18:18,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:18:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:18:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:18,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:18:18,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117852194] [2023-11-29 04:18:18,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117852194] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:18:18,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131920343] [2023-11-29 04:18:18,812 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 04:18:18,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:18:18,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:18:18,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:18:18,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:18:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:18:18,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:18:18,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:18:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 1 proven. 200 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:19,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:18:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:19,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131920343] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:18:19,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:18:19,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2023-11-29 04:18:19,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360837744] [2023-11-29 04:18:19,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:18:19,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 04:18:19,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:18:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 04:18:19,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1446, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 04:18:19,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:18:19,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 352 transitions, 5370 flow. Second operand has 42 states, 42 states have (on average 15.166666666666666) internal successors, (637), 42 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:19,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:18:19,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:18:19,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:18:24,845 INFO L124 PetriNetUnfolderBase]: 5242/10531 cut-off events. [2023-11-29 04:18:24,845 INFO L125 PetriNetUnfolderBase]: For 751073/751079 co-relation queries the response was YES. [2023-11-29 04:18:24,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68651 conditions, 10531 events. 5242/10531 cut-off events. For 751073/751079 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 72248 event pairs, 288 based on Foata normal form. 87/10617 useless extension candidates. Maximal degree in co-relation 68534. Up to 1728 conditions per place. [2023-11-29 04:18:24,979 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 279 selfloop transitions, 398 changer transitions 157/840 dead transitions. [2023-11-29 04:18:24,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 840 transitions, 14811 flow [2023-11-29 04:18:24,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-29 04:18:24,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-11-29 04:18:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 1166 transitions. [2023-11-29 04:18:24,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5646489104116222 [2023-11-29 04:18:24,984 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 1166 transitions. [2023-11-29 04:18:24,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 1166 transitions. [2023-11-29 04:18:24,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:18:24,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 1166 transitions. [2023-11-29 04:18:24,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 19.76271186440678) internal successors, (1166), 59 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:24,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 35.0) internal successors, (2100), 60 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:24,992 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 35.0) internal successors, (2100), 60 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:24,992 INFO L175 Difference]: Start difference. First operand has 292 places, 352 transitions, 5370 flow. Second operand 59 states and 1166 transitions. [2023-11-29 04:18:24,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 840 transitions, 14811 flow [2023-11-29 04:18:27,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 840 transitions, 13556 flow, removed 529 selfloop flow, removed 29 redundant places. [2023-11-29 04:18:27,730 INFO L231 Difference]: Finished difference. Result has 340 places, 492 transitions, 8569 flow [2023-11-29 04:18:27,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4697, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=8569, PETRI_PLACES=340, PETRI_TRANSITIONS=492} [2023-11-29 04:18:27,731 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 304 predicate places. [2023-11-29 04:18:27,731 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 492 transitions, 8569 flow [2023-11-29 04:18:27,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 15.166666666666666) internal successors, (637), 42 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:27,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:18:27,731 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:18:27,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:18:27,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:18:27,932 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:18:27,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:18:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1891731103, now seen corresponding path program 8 times [2023-11-29 04:18:27,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:18:27,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950339173] [2023-11-29 04:18:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:18:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:18:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:18:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:28,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:18:28,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950339173] [2023-11-29 04:18:28,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950339173] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:18:28,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961115269] [2023-11-29 04:18:28,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:18:28,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:18:28,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:18:28,294 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:18:28,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:18:28,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:18:28,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:18:28,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:18:28,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:18:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:28,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:18:28,927 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:28,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961115269] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:18:28,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:18:28,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2023-11-29 04:18:28,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910435002] [2023-11-29 04:18:28,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:18:28,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 04:18:28,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:18:28,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 04:18:28,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1383, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 04:18:28,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:18:28,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 492 transitions, 8569 flow. Second operand has 41 states, 41 states have (on average 15.146341463414634) internal successors, (621), 41 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:28,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:18:28,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:18:28,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:18:34,953 INFO L124 PetriNetUnfolderBase]: 6430/12922 cut-off events. [2023-11-29 04:18:34,953 INFO L125 PetriNetUnfolderBase]: For 1270248/1270254 co-relation queries the response was YES. [2023-11-29 04:18:35,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92113 conditions, 12922 events. 6430/12922 cut-off events. For 1270248/1270254 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 92641 event pairs, 150 based on Foata normal form. 87/13008 useless extension candidates. Maximal degree in co-relation 91976. Up to 2052 conditions per place. [2023-11-29 04:18:35,130 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 260 selfloop transitions, 530 changer transitions 157/953 dead transitions. [2023-11-29 04:18:35,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 953 transitions, 18270 flow [2023-11-29 04:18:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-29 04:18:35,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-11-29 04:18:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 1176 transitions. [2023-11-29 04:18:35,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694915254237288 [2023-11-29 04:18:35,132 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 1176 transitions. [2023-11-29 04:18:35,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 1176 transitions. [2023-11-29 04:18:35,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:18:35,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 1176 transitions. [2023-11-29 04:18:35,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 19.93220338983051) internal successors, (1176), 59 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:35,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 35.0) internal successors, (2100), 60 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:35,142 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 35.0) internal successors, (2100), 60 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:35,142 INFO L175 Difference]: Start difference. First operand has 340 places, 492 transitions, 8569 flow. Second operand 59 states and 1176 transitions. [2023-11-29 04:18:35,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 953 transitions, 18270 flow [2023-11-29 04:18:41,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 953 transitions, 15926 flow, removed 1105 selfloop flow, removed 23 redundant places. [2023-11-29 04:18:41,409 INFO L231 Difference]: Finished difference. Result has 392 places, 605 transitions, 10723 flow [2023-11-29 04:18:41,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7217, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=432, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=10723, PETRI_PLACES=392, PETRI_TRANSITIONS=605} [2023-11-29 04:18:41,410 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 356 predicate places. [2023-11-29 04:18:41,410 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 605 transitions, 10723 flow [2023-11-29 04:18:41,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 15.146341463414634) internal successors, (621), 41 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:41,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:18:41,411 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:18:41,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:18:41,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:18:41,612 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:18:41,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:18:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash 206190157, now seen corresponding path program 9 times [2023-11-29 04:18:41,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:18:41,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566163925] [2023-11-29 04:18:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:18:41,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:18:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:18:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:42,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:18:42,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566163925] [2023-11-29 04:18:42,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566163925] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:18:42,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408315008] [2023-11-29 04:18:42,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:18:42,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:18:42,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:18:42,105 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:18:42,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:18:42,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-11-29 04:18:42,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:18:42,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:18:42,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:18:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:42,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:18:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:42,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408315008] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:18:42,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:18:42,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2023-11-29 04:18:42,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058763907] [2023-11-29 04:18:42,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:18:42,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 04:18:42,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:18:42,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 04:18:42,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1407, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 04:18:42,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:18:42,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 605 transitions, 10723 flow. Second operand has 42 states, 42 states have (on average 15.166666666666666) internal successors, (637), 42 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:42,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:18:42,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:18:42,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:18:51,244 INFO L124 PetriNetUnfolderBase]: 7204/14358 cut-off events. [2023-11-29 04:18:51,245 INFO L125 PetriNetUnfolderBase]: For 1642700/1642706 co-relation queries the response was YES. [2023-11-29 04:18:51,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108828 conditions, 14358 events. 7204/14358 cut-off events. For 1642700/1642706 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 104107 event pairs, 66 based on Foata normal form. 96/14453 useless extension candidates. Maximal degree in co-relation 108675. Up to 2244 conditions per place. [2023-11-29 04:18:51,651 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 254 selfloop transitions, 598 changer transitions 162/1020 dead transitions. [2023-11-29 04:18:51,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 1020 transitions, 20836 flow [2023-11-29 04:18:51,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-29 04:18:51,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-11-29 04:18:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 1207 transitions. [2023-11-29 04:18:51,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5747619047619048 [2023-11-29 04:18:51,655 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 1207 transitions. [2023-11-29 04:18:51,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 1207 transitions. [2023-11-29 04:18:51,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:18:51,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 1207 transitions. [2023-11-29 04:18:51,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 20.116666666666667) internal successors, (1207), 60 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:51,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 35.0) internal successors, (2135), 61 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:51,661 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 35.0) internal successors, (2135), 61 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:51,661 INFO L175 Difference]: Start difference. First operand has 392 places, 605 transitions, 10723 flow. Second operand 60 states and 1207 transitions. [2023-11-29 04:18:51,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 1020 transitions, 20836 flow [2023-11-29 04:18:58,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 1020 transitions, 18541 flow, removed 922 selfloop flow, removed 32 redundant places. [2023-11-29 04:18:58,502 INFO L231 Difference]: Finished difference. Result has 434 places, 665 transitions, 12410 flow [2023-11-29 04:18:58,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=9222, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=545, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=12410, PETRI_PLACES=434, PETRI_TRANSITIONS=665} [2023-11-29 04:18:58,503 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 398 predicate places. [2023-11-29 04:18:58,503 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 665 transitions, 12410 flow [2023-11-29 04:18:58,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 15.166666666666666) internal successors, (637), 42 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:58,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:18:58,504 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:18:58,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:18:58,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:18:58,704 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:18:58,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:18:58,705 INFO L85 PathProgramCache]: Analyzing trace with hash -598809404, now seen corresponding path program 10 times [2023-11-29 04:18:58,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:18:58,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720486452] [2023-11-29 04:18:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:18:58,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:18:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:18:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:59,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:18:59,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720486452] [2023-11-29 04:18:59,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720486452] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:18:59,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907327240] [2023-11-29 04:18:59,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:18:59,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:18:59,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:18:59,141 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:18:59,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:18:59,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:18:59,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:18:59,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:18:59,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:18:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:59,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:18:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:18:59,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907327240] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:18:59,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:18:59,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 42 [2023-11-29 04:18:59,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761706690] [2023-11-29 04:18:59,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:18:59,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 04:18:59,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:18:59,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 04:18:59,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 04:18:59,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:18:59,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 665 transitions, 12410 flow. Second operand has 43 states, 43 states have (on average 15.116279069767442) internal successors, (650), 43 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:18:59,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:18:59,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:18:59,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:07,131 INFO L124 PetriNetUnfolderBase]: 7339/14702 cut-off events. [2023-11-29 04:19:07,131 INFO L125 PetriNetUnfolderBase]: For 2035319/2035325 co-relation queries the response was YES. [2023-11-29 04:19:07,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117262 conditions, 14702 events. 7339/14702 cut-off events. For 2035319/2035325 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 107131 event pairs, 203 based on Foata normal form. 33/14732 useless extension candidates. Maximal degree in co-relation 117094. Up to 2328 conditions per place. [2023-11-29 04:19:07,384 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 241 selfloop transitions, 583 changer transitions 87/917 dead transitions. [2023-11-29 04:19:07,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 917 transitions, 19421 flow [2023-11-29 04:19:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-29 04:19:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-11-29 04:19:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 868 transitions. [2023-11-29 04:19:07,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5767441860465117 [2023-11-29 04:19:07,386 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 868 transitions. [2023-11-29 04:19:07,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 868 transitions. [2023-11-29 04:19:07,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:07,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 868 transitions. [2023-11-29 04:19:07,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 20.186046511627907) internal successors, (868), 43 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:07,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 35.0) internal successors, (1540), 44 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:07,391 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 35.0) internal successors, (1540), 44 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:07,391 INFO L175 Difference]: Start difference. First operand has 434 places, 665 transitions, 12410 flow. Second operand 43 states and 868 transitions. [2023-11-29 04:19:07,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 917 transitions, 19421 flow [2023-11-29 04:19:14,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 917 transitions, 16254 flow, removed 1177 selfloop flow, removed 42 redundant places. [2023-11-29 04:19:14,705 INFO L231 Difference]: Finished difference. Result has 431 places, 684 transitions, 12367 flow [2023-11-29 04:19:14,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=10405, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=564, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=12367, PETRI_PLACES=431, PETRI_TRANSITIONS=684} [2023-11-29 04:19:14,707 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 395 predicate places. [2023-11-29 04:19:14,707 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 684 transitions, 12367 flow [2023-11-29 04:19:14,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 15.116279069767442) internal successors, (650), 43 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:14,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:14,707 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:14,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 04:19:14,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:14,908 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:14,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1588024144, now seen corresponding path program 11 times [2023-11-29 04:19:14,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:14,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27555151] [2023-11-29 04:19:14,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:14,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:19:15,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:15,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27555151] [2023-11-29 04:19:15,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27555151] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:19:15,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608514173] [2023-11-29 04:19:15,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:19:15,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:15,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:15,258 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:15,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:19:15,352 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-11-29 04:19:15,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:19:15,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:19:15,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:15,481 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:19:15,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:19:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:19:15,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608514173] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:19:15,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:19:15,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 42 [2023-11-29 04:19:15,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151090139] [2023-11-29 04:19:15,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:19:15,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 04:19:15,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:15,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 04:19:15,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1413, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 04:19:15,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:19:15,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 684 transitions, 12367 flow. Second operand has 43 states, 43 states have (on average 15.13953488372093) internal successors, (651), 43 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:15,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:15,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:19:15,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:23,629 INFO L124 PetriNetUnfolderBase]: 7555/15114 cut-off events. [2023-11-29 04:19:23,629 INFO L125 PetriNetUnfolderBase]: For 1698366/1698372 co-relation queries the response was YES. [2023-11-29 04:19:23,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112924 conditions, 15114 events. 7555/15114 cut-off events. For 1698366/1698372 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 110369 event pairs, 170 based on Foata normal form. 69/15182 useless extension candidates. Maximal degree in co-relation 112758. Up to 2394 conditions per place. [2023-11-29 04:19:23,924 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 245 selfloop transitions, 605 changer transitions 115/971 dead transitions. [2023-11-29 04:19:23,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 971 transitions, 19434 flow [2023-11-29 04:19:23,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 04:19:23,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-11-29 04:19:23,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 986 transitions. [2023-11-29 04:19:23,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574927113702624 [2023-11-29 04:19:23,927 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 986 transitions. [2023-11-29 04:19:23,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 986 transitions. [2023-11-29 04:19:23,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:23,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 986 transitions. [2023-11-29 04:19:23,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 20.122448979591837) internal successors, (986), 49 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:23,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 35.0) internal successors, (1750), 50 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:23,933 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 35.0) internal successors, (1750), 50 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:23,933 INFO L175 Difference]: Start difference. First operand has 431 places, 684 transitions, 12367 flow. Second operand 49 states and 986 transitions. [2023-11-29 04:19:23,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 971 transitions, 19434 flow [2023-11-29 04:19:30,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 971 transitions, 17845 flow, removed 577 selfloop flow, removed 24 redundant places. [2023-11-29 04:19:30,583 INFO L231 Difference]: Finished difference. Result has 462 places, 708 transitions, 13607 flow [2023-11-29 04:19:30,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=11490, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=587, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=13607, PETRI_PLACES=462, PETRI_TRANSITIONS=708} [2023-11-29 04:19:30,585 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 426 predicate places. [2023-11-29 04:19:30,585 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 708 transitions, 13607 flow [2023-11-29 04:19:30,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 15.13953488372093) internal successors, (651), 43 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:30,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:30,585 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:30,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 04:19:30,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 04:19:30,786 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:30,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:30,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1746350625, now seen corresponding path program 12 times [2023-11-29 04:19:30,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:30,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781861563] [2023-11-29 04:19:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:30,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:19:30,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:19:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:19:30,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:19:30,864 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:19:30,865 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-29 04:19:30,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-29 04:19:30,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-29 04:19:30,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-29 04:19:30,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-29 04:19:30,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-29 04:19:30,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-29 04:19:30,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-29 04:19:30,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 04:19:30,869 INFO L445 BasicCegarLoop]: Path program histogram: [12, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:30,875 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 04:19:30,875 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:19:30,943 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-29 04:19:30,947 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-29 04:19:30,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:19:30 BasicIcfg [2023-11-29 04:19:30,983 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:19:30,984 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:19:30,984 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:19:30,984 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:19:30,984 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:17:48" (3/4) ... [2023-11-29 04:19:30,986 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 04:19:30,987 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:19:30,987 INFO L158 Benchmark]: Toolchain (without parser) took 103884.56ms. Allocated memory was 180.4MB in the beginning and 5.0GB in the end (delta: 4.8GB). Free memory was 139.5MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2023-11-29 04:19:30,987 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 180.4MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:19:30,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.12ms. Allocated memory is still 180.4MB. Free memory was 138.9MB in the beginning and 119.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 04:19:30,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.32ms. Allocated memory is still 180.4MB. Free memory was 119.5MB in the beginning and 117.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:19:30,988 INFO L158 Benchmark]: Boogie Preprocessor took 52.10ms. Allocated memory is still 180.4MB. Free memory was 117.4MB in the beginning and 115.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:19:30,988 INFO L158 Benchmark]: RCFGBuilder took 554.20ms. Allocated memory is still 180.4MB. Free memory was 115.3MB in the beginning and 94.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 04:19:30,989 INFO L158 Benchmark]: TraceAbstraction took 102726.17ms. Allocated memory was 180.4MB in the beginning and 5.0GB in the end (delta: 4.8GB). Free memory was 93.3MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2023-11-29 04:19:30,989 INFO L158 Benchmark]: Witness Printer took 2.94ms. Allocated memory is still 5.0GB. Free memory was 2.6GB in the beginning and 2.6GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:19:30,991 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 180.4MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 498.12ms. Allocated memory is still 180.4MB. Free memory was 138.9MB in the beginning and 119.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.32ms. Allocated memory is still 180.4MB. Free memory was 119.5MB in the beginning and 117.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.10ms. Allocated memory is still 180.4MB. Free memory was 117.4MB in the beginning and 115.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 554.20ms. Allocated memory is still 180.4MB. Free memory was 115.3MB in the beginning and 94.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 102726.17ms. Allocated memory was 180.4MB in the beginning and 5.0GB in the end (delta: 4.8GB). Free memory was 93.3MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. * Witness Printer took 2.94ms. Allocated memory is still 5.0GB. Free memory was 2.6GB in the beginning and 2.6GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, condI=0, i=23, id1={5:0}, id2={3:0}, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L719] 0 int condJ = j >= (2*10 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, condI=0, condJ=1, i=25, id1={5:0}, id2={3:0}, j=26, k=9, k=9] [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L693] 0 __assert_fail ("0", "triangular-longer-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 44 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 102.5s, OverallIterations: 23, TraceHistogramMax: 10, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 86.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7905 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7832 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 406 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8503 IncrementalHoareTripleChecker+Invalid, 8909 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 406 mSolverCounterUnsat, 23 mSDtfsCounter, 8503 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1912 GetRequests, 1054 SyntacticMatches, 0 SemanticMatches, 858 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18251 ImplicationChecksByTransitivity, 12.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13607occurred in iteration=22, InterpolantAutomatonStates: 580, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 1412 NumberOfCodeBlocks, 1412 NumberOfCodeBlocksAsserted, 83 NumberOfCheckSat, 1912 ConstructedInterpolants, 0 QuantifiedInterpolants, 8417 SizeOfPredicates, 160 NumberOfNonLiveVariables, 2110 ConjunctsInSsa, 224 ConjunctsInUnsatCore, 46 InterpolantComputations, 10 PerfectInterpolantSequences, 61/4683 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 04:19:31,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:19:33,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:19:33,659 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 04:19:33,675 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:19:33,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:19:33,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:19:33,719 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:19:33,719 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:19:33,720 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:19:33,721 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:19:33,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:19:33,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:19:33,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:19:33,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:19:33,725 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:19:33,726 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:19:33,727 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:19:33,728 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:19:33,728 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:19:33,729 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:19:33,730 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:19:33,733 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:19:33,733 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:19:33,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:19:33,734 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:19:33,735 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:19:33,735 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:19:33,736 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:19:33,736 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:19:33,737 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:19:33,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:19:33,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:19:33,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:19:33,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:19:33,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:19:33,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:19:33,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:19:33,740 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:19:33,740 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:19:33,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:19:33,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:19:33,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:19:33,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:19:33,742 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:19:33,742 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2023-11-29 04:19:34,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:19:34,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:19:34,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:19:34,124 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:19:34,125 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:19:34,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-29 04:19:37,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:19:37,664 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:19:37,665 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-29 04:19:37,683 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/data/c7bb3ffc9/3f63f80d33b9465fbbabe5a49ce62efd/FLAG42d74c3be [2023-11-29 04:19:37,701 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/data/c7bb3ffc9/3f63f80d33b9465fbbabe5a49ce62efd [2023-11-29 04:19:37,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:19:37,707 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:19:37,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:19:37,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:19:37,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:19:37,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:19:37" (1/1) ... [2023-11-29 04:19:37,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec1028e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:37, skipping insertion in model container [2023-11-29 04:19:37,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:19:37" (1/1) ... [2023-11-29 04:19:37,779 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:19:38,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:19:38,184 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:19:38,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:19:38,275 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:19:38,275 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:19:38,285 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:19:38,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38 WrapperNode [2023-11-29 04:19:38,286 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:19:38,287 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:19:38,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:19:38,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:19:38,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38" (1/1) ... [2023-11-29 04:19:38,317 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38" (1/1) ... [2023-11-29 04:19:38,343 INFO L138 Inliner]: procedures = 172, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-11-29 04:19:38,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:19:38,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:19:38,345 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:19:38,345 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:19:38,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38" (1/1) ... [2023-11-29 04:19:38,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38" (1/1) ... [2023-11-29 04:19:38,363 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38" (1/1) ... [2023-11-29 04:19:38,381 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 04:19:38,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38" (1/1) ... [2023-11-29 04:19:38,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38" (1/1) ... [2023-11-29 04:19:38,391 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38" (1/1) ... [2023-11-29 04:19:38,395 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38" (1/1) ... [2023-11-29 04:19:38,398 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38" (1/1) ... [2023-11-29 04:19:38,400 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38" (1/1) ... [2023-11-29 04:19:38,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:19:38,405 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:19:38,405 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:19:38,406 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:19:38,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38" (1/1) ... [2023-11-29 04:19:38,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:19:38,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:38,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:19:38,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:19:38,497 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 04:19:38,497 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 04:19:38,497 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 04:19:38,498 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 04:19:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 04:19:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:19:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:19:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:19:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 04:19:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 04:19:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 04:19:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:19:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 04:19:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 04:19:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 04:19:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:19:38,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:19:38,502 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:19:38,676 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:19:38,679 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:19:38,897 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:19:39,028 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:19:39,028 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 04:19:39,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:19:39 BoogieIcfgContainer [2023-11-29 04:19:39,029 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:19:39,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:19:39,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:19:39,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:19:39,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:19:37" (1/3) ... [2023-11-29 04:19:39,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa6d551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:19:39, skipping insertion in model container [2023-11-29 04:19:39,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:38" (2/3) ... [2023-11-29 04:19:39,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa6d551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:19:39, skipping insertion in model container [2023-11-29 04:19:39,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:19:39" (3/3) ... [2023-11-29 04:19:39,048 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-11-29 04:19:39,072 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:19:39,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 04:19:39,072 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:19:39,134 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 04:19:39,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 78 flow [2023-11-29 04:19:39,237 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-11-29 04:19:39,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:19:39,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-29 04:19:39,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 78 flow [2023-11-29 04:19:39,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 33 transitions, 72 flow [2023-11-29 04:19:39,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:19:39,268 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42c4da36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:19:39,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-29 04:19:39,273 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:19:39,274 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 04:19:39,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:19:39,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:39,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 04:19:39,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:39,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:39,283 INFO L85 PathProgramCache]: Analyzing trace with hash 6801, now seen corresponding path program 1 times [2023-11-29 04:19:39,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:39,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498173153] [2023-11-29 04:19:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:39,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:39,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:39,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:39,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 04:19:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:39,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:19:39,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:39,504 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 04:19:39,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 04:19:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:39,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:39,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:39,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498173153] [2023-11-29 04:19:39,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498173153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:39,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:39,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:19:39,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784372435] [2023-11-29 04:19:39,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:39,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:19:39,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:39,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:19:39,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:19:39,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-29 04:19:39,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:39,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:39,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-29 04:19:39,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:39,769 INFO L124 PetriNetUnfolderBase]: 88/193 cut-off events. [2023-11-29 04:19:39,769 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 04:19:39,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 193 events. 88/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 711 event pairs, 32 based on Foata normal form. 15/191 useless extension candidates. Maximal degree in co-relation 333. Up to 87 conditions per place. [2023-11-29 04:19:39,776 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 18 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-11-29 04:19:39,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 118 flow [2023-11-29 04:19:39,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:19:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:19:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-29 04:19:39,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-29 04:19:39,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-29 04:19:39,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-29 04:19:39,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:39,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-29 04:19:39,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:39,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:39,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:39,801 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 72 flow. Second operand 3 states and 72 transitions. [2023-11-29 04:19:39,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 118 flow [2023-11-29 04:19:39,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:39,807 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2023-11-29 04:19:39,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-29 04:19:39,812 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-29 04:19:39,813 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2023-11-29 04:19:39,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:39,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:39,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 04:19:39,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:19:40,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:40,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:40,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:40,016 INFO L85 PathProgramCache]: Analyzing trace with hash 6802, now seen corresponding path program 1 times [2023-11-29 04:19:40,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:40,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835171429] [2023-11-29 04:19:40,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:40,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:40,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:40,018 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:40,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 04:19:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:40,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:19:40,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:40,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:19:40,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 04:19:40,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 04:19:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:40,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:40,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:40,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835171429] [2023-11-29 04:19:40,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835171429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:40,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:40,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:19:40,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030549361] [2023-11-29 04:19:40,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:40,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:19:40,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:40,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:19:40,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:19:40,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 04:19:40,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:40,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:40,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 04:19:40,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:40,287 INFO L124 PetriNetUnfolderBase]: 70/165 cut-off events. [2023-11-29 04:19:40,288 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 04:19:40,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 165 events. 70/165 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 624 event pairs, 32 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 288. Up to 86 conditions per place. [2023-11-29 04:19:40,292 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-29 04:19:40,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 112 flow [2023-11-29 04:19:40,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:19:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:19:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-29 04:19:40,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-29 04:19:40,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-29 04:19:40,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-29 04:19:40,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:40,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-29 04:19:40,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:40,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:40,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:40,299 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 71 transitions. [2023-11-29 04:19:40,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 112 flow [2023-11-29 04:19:40,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:40,302 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 62 flow [2023-11-29 04:19:40,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-29 04:19:40,304 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-29 04:19:40,304 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 62 flow [2023-11-29 04:19:40,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:40,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:40,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 04:19:40,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 04:19:40,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:40,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:40,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:40,507 INFO L85 PathProgramCache]: Analyzing trace with hash 202776937, now seen corresponding path program 1 times [2023-11-29 04:19:40,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:40,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907052763] [2023-11-29 04:19:40,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:40,508 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:40,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:40,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:40,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 04:19:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:40,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:19:40,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:40,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:19:40,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:19:40,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:19:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:40,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:40,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:40,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907052763] [2023-11-29 04:19:40,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907052763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:40,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:40,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:19:40,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855480963] [2023-11-29 04:19:40,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:40,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:19:40,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:40,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:19:40,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:19:40,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 04:19:40,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:40,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:40,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 04:19:40,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:40,829 INFO L124 PetriNetUnfolderBase]: 70/164 cut-off events. [2023-11-29 04:19:40,829 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 04:19:40,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 164 events. 70/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 618 event pairs, 32 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 287. Up to 86 conditions per place. [2023-11-29 04:19:40,832 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-29 04:19:40,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 110 flow [2023-11-29 04:19:40,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:19:40,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:19:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-29 04:19:40,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-29 04:19:40,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-29 04:19:40,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-29 04:19:40,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:40,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-29 04:19:40,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:40,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:40,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:40,839 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 62 flow. Second operand 3 states and 71 transitions. [2023-11-29 04:19:40,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 110 flow [2023-11-29 04:19:40,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:40,841 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 60 flow [2023-11-29 04:19:40,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-29 04:19:40,843 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-29 04:19:40,843 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 60 flow [2023-11-29 04:19:40,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:40,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:40,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 04:19:40,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 04:19:41,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:41,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:41,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:41,048 INFO L85 PathProgramCache]: Analyzing trace with hash 202776936, now seen corresponding path program 1 times [2023-11-29 04:19:41,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:41,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092338891] [2023-11-29 04:19:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:41,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:41,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:41,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:41,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 04:19:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:41,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:19:41,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:41,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:19:41,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:19:41,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:19:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:41,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:41,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:41,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092338891] [2023-11-29 04:19:41,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092338891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:41,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:41,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:19:41,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225575578] [2023-11-29 04:19:41,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:41,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:19:41,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:19:41,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:19:41,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-29 04:19:41,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:41,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:41,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-29 04:19:41,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:41,292 INFO L124 PetriNetUnfolderBase]: 73/166 cut-off events. [2023-11-29 04:19:41,292 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 04:19:41,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 166 events. 73/166 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 600 event pairs, 34 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 295. Up to 92 conditions per place. [2023-11-29 04:19:41,295 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-29 04:19:41,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 110 flow [2023-11-29 04:19:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:19:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:19:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-29 04:19:41,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2023-11-29 04:19:41,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-29 04:19:41,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-29 04:19:41,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:41,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-29 04:19:41,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:41,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:41,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:41,301 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 60 flow. Second operand 3 states and 69 transitions. [2023-11-29 04:19:41,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 110 flow [2023-11-29 04:19:41,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:41,304 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 58 flow [2023-11-29 04:19:41,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-29 04:19:41,305 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-29 04:19:41,305 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 58 flow [2023-11-29 04:19:41,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:41,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:41,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:41,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 04:19:41,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:41,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:41,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:41,510 INFO L85 PathProgramCache]: Analyzing trace with hash 665434620, now seen corresponding path program 1 times [2023-11-29 04:19:41,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:41,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035814422] [2023-11-29 04:19:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:41,511 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:41,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:41,512 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:41,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 04:19:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:41,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:19:41,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:41,832 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ bv0 1))))) is different from true [2023-11-29 04:19:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:41,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:41,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:41,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035814422] [2023-11-29 04:19:41,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035814422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:41,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:41,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:19:41,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414518455] [2023-11-29 04:19:41,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:41,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:19:41,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:41,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:19:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:19:41,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:19:41,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:41,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:41,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:19:41,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:41,940 INFO L124 PetriNetUnfolderBase]: 97/205 cut-off events. [2023-11-29 04:19:41,941 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 04:19:41,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 205 events. 97/205 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 750 event pairs, 34 based on Foata normal form. 9/196 useless extension candidates. Maximal degree in co-relation 374. Up to 93 conditions per place. [2023-11-29 04:19:41,944 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 20 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2023-11-29 04:19:41,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 138 flow [2023-11-29 04:19:41,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:19:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:19:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:19:41,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:19:41,947 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:19:41,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:19:41,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:41,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:19:41,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:41,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:41,950 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:41,950 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 58 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:19:41,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 138 flow [2023-11-29 04:19:41,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:41,952 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 103 flow [2023-11-29 04:19:41,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2023-11-29 04:19:41,953 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-29 04:19:41,954 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 103 flow [2023-11-29 04:19:41,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:41,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:41,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:41,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 04:19:42,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:42,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:42,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash 665435715, now seen corresponding path program 1 times [2023-11-29 04:19:42,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:42,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934481049] [2023-11-29 04:19:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:42,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:42,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:42,159 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:42,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 04:19:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:42,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:19:42,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:42,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:42,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:42,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:42,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934481049] [2023-11-29 04:19:42,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934481049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:42,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:42,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:19:42,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735427317] [2023-11-29 04:19:42,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:42,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:19:42,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:42,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:19:42,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:19:42,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:19:42,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:42,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:42,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:19:42,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:42,717 INFO L124 PetriNetUnfolderBase]: 476/836 cut-off events. [2023-11-29 04:19:42,717 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-29 04:19:42,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 836 events. 476/836 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3864 event pairs, 49 based on Foata normal form. 0/806 useless extension candidates. Maximal degree in co-relation 2074. Up to 420 conditions per place. [2023-11-29 04:19:42,726 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 68 selfloop transitions, 13 changer transitions 0/88 dead transitions. [2023-11-29 04:19:42,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 88 transitions, 463 flow [2023-11-29 04:19:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:19:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:19:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2023-11-29 04:19:42,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2023-11-29 04:19:42,730 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 174 transitions. [2023-11-29 04:19:42,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 174 transitions. [2023-11-29 04:19:42,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:42,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 174 transitions. [2023-11-29 04:19:42,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:42,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:42,735 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:42,735 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 103 flow. Second operand 8 states and 174 transitions. [2023-11-29 04:19:42,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 88 transitions, 463 flow [2023-11-29 04:19:42,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 88 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:42,741 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 191 flow [2023-11-29 04:19:42,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-11-29 04:19:42,743 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-11-29 04:19:42,743 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 191 flow [2023-11-29 04:19:42,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:42,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:42,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:42,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 04:19:42,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:42,948 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:42,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:42,948 INFO L85 PathProgramCache]: Analyzing trace with hash -846362831, now seen corresponding path program 1 times [2023-11-29 04:19:42,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:42,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660549075] [2023-11-29 04:19:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:42,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:42,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:42,957 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:42,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 04:19:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:43,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:19:43,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:43,273 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44|) (_ bv0 1)))) is different from true [2023-11-29 04:19:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:43,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:43,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:43,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660549075] [2023-11-29 04:19:43,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660549075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:43,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:43,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:19:43,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332361667] [2023-11-29 04:19:43,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:43,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:19:43,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:19:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:19:43,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:19:43,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:43,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:43,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:19:43,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:43,463 INFO L124 PetriNetUnfolderBase]: 292/590 cut-off events. [2023-11-29 04:19:43,463 INFO L125 PetriNetUnfolderBase]: For 341/435 co-relation queries the response was YES. [2023-11-29 04:19:43,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 590 events. 292/590 cut-off events. For 341/435 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3105 event pairs, 81 based on Foata normal form. 8/547 useless extension candidates. Maximal degree in co-relation 1622. Up to 307 conditions per place. [2023-11-29 04:19:43,469 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 21 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2023-11-29 04:19:43,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 301 flow [2023-11-29 04:19:43,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:19:43,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:19:43,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:19:43,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:19:43,471 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:19:43,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:19:43,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:43,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:19:43,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:43,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:43,473 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:43,473 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 191 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:19:43,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 301 flow [2023-11-29 04:19:43,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 301 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:19:43,478 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 258 flow [2023-11-29 04:19:43,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-11-29 04:19:43,479 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2023-11-29 04:19:43,479 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 258 flow [2023-11-29 04:19:43,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:43,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:43,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:43,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 04:19:43,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:43,680 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:43,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash -846362676, now seen corresponding path program 1 times [2023-11-29 04:19:43,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:43,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124272740] [2023-11-29 04:19:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:43,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:43,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:43,683 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:43,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 04:19:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:43,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:19:43,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:43,966 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37|) (_ bv0 1)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ bv0 1))))) is different from true [2023-11-29 04:19:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:43,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:43,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:43,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124272740] [2023-11-29 04:19:43,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124272740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:43,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:43,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:19:43,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321570720] [2023-11-29 04:19:43,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:43,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:19:43,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:43,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:19:43,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:19:44,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:19:44,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:44,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:44,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:19:44,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:44,167 INFO L124 PetriNetUnfolderBase]: 302/616 cut-off events. [2023-11-29 04:19:44,168 INFO L125 PetriNetUnfolderBase]: For 686/882 co-relation queries the response was YES. [2023-11-29 04:19:44,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 616 events. 302/616 cut-off events. For 686/882 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3280 event pairs, 81 based on Foata normal form. 12/577 useless extension candidates. Maximal degree in co-relation 2084. Up to 323 conditions per place. [2023-11-29 04:19:44,176 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 26 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2023-11-29 04:19:44,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 396 flow [2023-11-29 04:19:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:19:44,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:19:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:19:44,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:19:44,189 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:19:44,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:19:44,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:44,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:19:44,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:44,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:44,192 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:44,192 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 258 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:19:44,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 396 flow [2023-11-29 04:19:44,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:44,199 INFO L231 Difference]: Finished difference. Result has 49 places, 54 transitions, 320 flow [2023-11-29 04:19:44,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=49, PETRI_TRANSITIONS=54} [2023-11-29 04:19:44,200 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-11-29 04:19:44,200 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 320 flow [2023-11-29 04:19:44,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:44,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:44,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:44,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 04:19:44,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:44,404 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:44,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:44,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1571463786, now seen corresponding path program 1 times [2023-11-29 04:19:44,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:44,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238314879] [2023-11-29 04:19:44,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:44,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:44,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:44,407 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:44,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 04:19:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:44,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:19:44,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:44,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:44,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:44,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238314879] [2023-11-29 04:19:44,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238314879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:44,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:44,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:19:44,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389343482] [2023-11-29 04:19:44,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:44,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:19:44,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:44,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:19:44,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:19:44,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2023-11-29 04:19:44,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:44,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:44,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2023-11-29 04:19:44,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:44,664 INFO L124 PetriNetUnfolderBase]: 331/649 cut-off events. [2023-11-29 04:19:44,664 INFO L125 PetriNetUnfolderBase]: For 1270/1667 co-relation queries the response was YES. [2023-11-29 04:19:44,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 649 events. 331/649 cut-off events. For 1270/1667 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3400 event pairs, 62 based on Foata normal form. 42/622 useless extension candidates. Maximal degree in co-relation 2601. Up to 358 conditions per place. [2023-11-29 04:19:44,674 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 37 selfloop transitions, 7 changer transitions 0/69 dead transitions. [2023-11-29 04:19:44,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 517 flow [2023-11-29 04:19:44,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:19:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:19:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2023-11-29 04:19:44,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-29 04:19:44,676 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 77 transitions. [2023-11-29 04:19:44,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 77 transitions. [2023-11-29 04:19:44,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:44,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 77 transitions. [2023-11-29 04:19:44,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:44,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:44,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:44,679 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 320 flow. Second operand 3 states and 77 transitions. [2023-11-29 04:19:44,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 517 flow [2023-11-29 04:19:44,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 497 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:44,687 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 358 flow [2023-11-29 04:19:44,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2023-11-29 04:19:44,688 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-11-29 04:19:44,688 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 358 flow [2023-11-29 04:19:44,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:44,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:44,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:44,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 04:19:44,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:44,892 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:44,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash 92591260, now seen corresponding path program 1 times [2023-11-29 04:19:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:44,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299924824] [2023-11-29 04:19:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:44,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:44,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:44,894 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:44,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 04:19:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:44,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:19:44,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:45,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:45,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:45,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299924824] [2023-11-29 04:19:45,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299924824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:45,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:45,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:19:45,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973041261] [2023-11-29 04:19:45,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:45,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:19:45,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:45,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:19:45,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:19:45,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2023-11-29 04:19:45,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:45,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:45,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2023-11-29 04:19:45,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:45,129 INFO L124 PetriNetUnfolderBase]: 347/749 cut-off events. [2023-11-29 04:19:45,129 INFO L125 PetriNetUnfolderBase]: For 1923/2279 co-relation queries the response was YES. [2023-11-29 04:19:45,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3105 conditions, 749 events. 347/749 cut-off events. For 1923/2279 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4468 event pairs, 73 based on Foata normal form. 50/749 useless extension candidates. Maximal degree in co-relation 3083. Up to 380 conditions per place. [2023-11-29 04:19:45,138 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 38 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-11-29 04:19:45,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 569 flow [2023-11-29 04:19:45,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:19:45,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:19:45,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-29 04:19:45,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-29 04:19:45,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-29 04:19:45,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-29 04:19:45,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:45,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-29 04:19:45,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:45,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:45,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:45,141 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 358 flow. Second operand 3 states and 75 transitions. [2023-11-29 04:19:45,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 569 flow [2023-11-29 04:19:45,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:19:45,148 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 398 flow [2023-11-29 04:19:45,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2023-11-29 04:19:45,149 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-11-29 04:19:45,149 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 398 flow [2023-11-29 04:19:45,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:45,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:45,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:45,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 04:19:45,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:45,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:45,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:45,351 INFO L85 PathProgramCache]: Analyzing trace with hash -467443401, now seen corresponding path program 1 times [2023-11-29 04:19:45,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:45,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405265304] [2023-11-29 04:19:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:45,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:45,353 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:45,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 04:19:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:45,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:19:45,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:45,581 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 04:19:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:45,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:45,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:45,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405265304] [2023-11-29 04:19:45,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405265304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:45,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:45,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:19:45,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930632005] [2023-11-29 04:19:45,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:45,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:19:45,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:45,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:19:45,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:19:45,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:19:45,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:45,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:45,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:19:45,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:45,747 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([175] L721-1-->main_returnLabel#1: Formula: (and (= (_ bv0 32) |v_ULTIMATE.start_main_#res#1_32|) (= (store (store |v_#valid_83| |v_ULTIMATE.start_main_~#id1~0#1.base_40| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_32| (_ bv0 1)) |v_#valid_82|)) InVars {ULTIMATE.start_main_~#id2~0#1.base=|v_ULTIMATE.start_main_~#id2~0#1.base_32|, #valid=|v_#valid_83|, ULTIMATE.start_main_~#id1~0#1.base=|v_ULTIMATE.start_main_~#id1~0#1.base_40|} OutVars{ULTIMATE.start_main_~#id2~0#1.offset=|v_ULTIMATE.start_main_~#id2~0#1.offset_28|, ULTIMATE.start_main_~#id1~0#1.offset=|v_ULTIMATE.start_main_~#id1~0#1.offset_32|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_32|, #valid=|v_#valid_82|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#id2~0#1.offset, ULTIMATE.start_main_#res#1, #valid, ULTIMATE.start_main_~#id2~0#1.base, ULTIMATE.start_main_~#id1~0#1.offset, ULTIMATE.start_main_~#id1~0#1.base][27], [33#L707true, t1Thread1of1ForFork0InUse, 29#main_returnLabel#1true, 385#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ BitVec 32))) (and (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46|) (_ bv0 1)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38|)))), t2Thread1of1ForFork1InUse, 157#(and (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), 213#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ BitVec 32))) (and (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44|)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36|)))), Black: 165#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 131#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32))), 331#(= (_ bv0 32) t2Thread1of1ForFork1_~k~1), Black: 169#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 126#true, Black: 167#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 278#(= (_ bv0 32) t1Thread1of1ForFork0_~k~0), 25#L696-5true, 255#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37|)))), 123#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35|))))]) [2023-11-29 04:19:45,747 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is not cut-off event [2023-11-29 04:19:45,747 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is not cut-off event [2023-11-29 04:19:45,748 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is not cut-off event [2023-11-29 04:19:45,748 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is not cut-off event [2023-11-29 04:19:45,756 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([175] L721-1-->main_returnLabel#1: Formula: (and (= (_ bv0 32) |v_ULTIMATE.start_main_#res#1_32|) (= (store (store |v_#valid_83| |v_ULTIMATE.start_main_~#id1~0#1.base_40| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_32| (_ bv0 1)) |v_#valid_82|)) InVars {ULTIMATE.start_main_~#id2~0#1.base=|v_ULTIMATE.start_main_~#id2~0#1.base_32|, #valid=|v_#valid_83|, ULTIMATE.start_main_~#id1~0#1.base=|v_ULTIMATE.start_main_~#id1~0#1.base_40|} OutVars{ULTIMATE.start_main_~#id2~0#1.offset=|v_ULTIMATE.start_main_~#id2~0#1.offset_28|, ULTIMATE.start_main_~#id1~0#1.offset=|v_ULTIMATE.start_main_~#id1~0#1.offset_32|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_32|, #valid=|v_#valid_82|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#id2~0#1.offset, ULTIMATE.start_main_#res#1, #valid, ULTIMATE.start_main_~#id2~0#1.base, ULTIMATE.start_main_~#id1~0#1.offset, ULTIMATE.start_main_~#id1~0#1.base][27], [9#t1EXITtrue, 33#L707true, t1Thread1of1ForFork0InUse, 29#main_returnLabel#1true, 385#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ BitVec 32))) (and (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46|) (_ bv0 1)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38|)))), t2Thread1of1ForFork1InUse, 157#(and (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), 213#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ BitVec 32))) (and (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44|)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36|)))), Black: 165#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 131#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32))), 331#(= (_ bv0 32) t2Thread1of1ForFork1_~k~1), Black: 169#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 126#true, Black: 167#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 278#(= (_ bv0 32) t1Thread1of1ForFork0_~k~0), 255#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37|)))), 123#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35|))))]) [2023-11-29 04:19:45,756 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is not cut-off event [2023-11-29 04:19:45,756 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is not cut-off event [2023-11-29 04:19:45,756 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is not cut-off event [2023-11-29 04:19:45,756 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2023-11-29 04:19:45,777 INFO L124 PetriNetUnfolderBase]: 360/741 cut-off events. [2023-11-29 04:19:45,777 INFO L125 PetriNetUnfolderBase]: For 2171/2616 co-relation queries the response was YES. [2023-11-29 04:19:45,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 741 events. 360/741 cut-off events. For 2171/2616 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4178 event pairs, 106 based on Foata normal form. 7/667 useless extension candidates. Maximal degree in co-relation 3270. Up to 377 conditions per place. [2023-11-29 04:19:45,789 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 28 selfloop transitions, 18 changer transitions 0/68 dead transitions. [2023-11-29 04:19:45,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 68 transitions, 589 flow [2023-11-29 04:19:45,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:19:45,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:19:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:19:45,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:19:45,792 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:19:45,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:19:45,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:45,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:19:45,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:45,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:45,794 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:45,794 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 398 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:19:45,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 68 transitions, 589 flow [2023-11-29 04:19:45,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:19:45,801 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 470 flow [2023-11-29 04:19:45,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=470, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-11-29 04:19:45,802 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2023-11-29 04:19:45,802 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 470 flow [2023-11-29 04:19:45,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:45,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:45,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:45,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-29 04:19:46,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:46,004 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:46,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:46,005 INFO L85 PathProgramCache]: Analyzing trace with hash 626340986, now seen corresponding path program 1 times [2023-11-29 04:19:46,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:46,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657057982] [2023-11-29 04:19:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:46,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:46,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:46,007 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:46,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 04:19:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:46,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:19:46,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:46,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:46,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:46,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657057982] [2023-11-29 04:19:46,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657057982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:46,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:46,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:19:46,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675338775] [2023-11-29 04:19:46,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:46,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:19:46,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:46,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:19:46,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:19:46,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:19:46,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 470 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:46,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:46,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:19:46,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:46,586 INFO L124 PetriNetUnfolderBase]: 711/1258 cut-off events. [2023-11-29 04:19:46,586 INFO L125 PetriNetUnfolderBase]: For 5229/5319 co-relation queries the response was YES. [2023-11-29 04:19:46,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5878 conditions, 1258 events. 711/1258 cut-off events. For 5229/5319 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6528 event pairs, 57 based on Foata normal form. 24/1260 useless extension candidates. Maximal degree in co-relation 5853. Up to 585 conditions per place. [2023-11-29 04:19:46,600 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 90 selfloop transitions, 22 changer transitions 0/119 dead transitions. [2023-11-29 04:19:46,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 119 transitions, 1178 flow [2023-11-29 04:19:46,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:19:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:19:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2023-11-29 04:19:46,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-29 04:19:46,602 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 168 transitions. [2023-11-29 04:19:46,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 168 transitions. [2023-11-29 04:19:46,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:46,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 168 transitions. [2023-11-29 04:19:46,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:46,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:46,605 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:46,605 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 470 flow. Second operand 8 states and 168 transitions. [2023-11-29 04:19:46,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 119 transitions, 1178 flow [2023-11-29 04:19:46,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 119 transitions, 1149 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:46,615 INFO L231 Difference]: Finished difference. Result has 65 places, 73 transitions, 604 flow [2023-11-29 04:19:46,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=604, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2023-11-29 04:19:46,617 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-11-29 04:19:46,617 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 604 flow [2023-11-29 04:19:46,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:46,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:46,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:46,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 04:19:46,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:46,821 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:46,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:46,822 INFO L85 PathProgramCache]: Analyzing trace with hash 43846129, now seen corresponding path program 1 times [2023-11-29 04:19:46,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:46,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918913951] [2023-11-29 04:19:46,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:46,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:46,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:46,824 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:46,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 04:19:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:46,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:19:46,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:46,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:46,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:46,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918913951] [2023-11-29 04:19:46,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918913951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:46,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:46,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:19:46,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763647522] [2023-11-29 04:19:46,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:46,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:19:46,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:46,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:19:46,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:19:46,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:19:46,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 73 transitions, 604 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:46,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:46,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:19:46,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:47,553 INFO L124 PetriNetUnfolderBase]: 1066/1862 cut-off events. [2023-11-29 04:19:47,553 INFO L125 PetriNetUnfolderBase]: For 9510/9640 co-relation queries the response was YES. [2023-11-29 04:19:47,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9535 conditions, 1862 events. 1066/1862 cut-off events. For 9510/9640 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10374 event pairs, 165 based on Foata normal form. 40/1871 useless extension candidates. Maximal degree in co-relation 9505. Up to 895 conditions per place. [2023-11-29 04:19:47,583 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 148 selfloop transitions, 33 changer transitions 0/188 dead transitions. [2023-11-29 04:19:47,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 188 transitions, 2046 flow [2023-11-29 04:19:47,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:19:47,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:19:47,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2023-11-29 04:19:47,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6171428571428571 [2023-11-29 04:19:47,585 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 216 transitions. [2023-11-29 04:19:47,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 216 transitions. [2023-11-29 04:19:47,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:47,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 216 transitions. [2023-11-29 04:19:47,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:47,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:47,589 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:47,589 INFO L175 Difference]: Start difference. First operand has 65 places, 73 transitions, 604 flow. Second operand 10 states and 216 transitions. [2023-11-29 04:19:47,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 188 transitions, 2046 flow [2023-11-29 04:19:47,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 188 transitions, 2040 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-29 04:19:47,615 INFO L231 Difference]: Finished difference. Result has 82 places, 98 transitions, 950 flow [2023-11-29 04:19:47,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=950, PETRI_PLACES=82, PETRI_TRANSITIONS=98} [2023-11-29 04:19:47,617 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2023-11-29 04:19:47,617 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 98 transitions, 950 flow [2023-11-29 04:19:47,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:47,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:47,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:47,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 04:19:47,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:47,818 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:47,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:47,819 INFO L85 PathProgramCache]: Analyzing trace with hash 958131919, now seen corresponding path program 2 times [2023-11-29 04:19:47,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:47,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160121042] [2023-11-29 04:19:47,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:19:47,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:47,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:47,821 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:47,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 04:19:47,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:19:47,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:19:47,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:19:47,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:47,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:47,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:47,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160121042] [2023-11-29 04:19:47,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160121042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:47,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:47,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:19:47,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477785271] [2023-11-29 04:19:47,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:47,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:19:47,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:47,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:19:47,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:19:48,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:19:48,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 98 transitions, 950 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:48,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:48,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:19:48,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:48,643 INFO L124 PetriNetUnfolderBase]: 1367/2362 cut-off events. [2023-11-29 04:19:48,644 INFO L125 PetriNetUnfolderBase]: For 17556/17750 co-relation queries the response was YES. [2023-11-29 04:19:48,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13580 conditions, 2362 events. 1367/2362 cut-off events. For 17556/17750 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13592 event pairs, 182 based on Foata normal form. 54/2371 useless extension candidates. Maximal degree in co-relation 13540. Up to 1195 conditions per place. [2023-11-29 04:19:48,683 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 154 selfloop transitions, 40 changer transitions 0/201 dead transitions. [2023-11-29 04:19:48,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 201 transitions, 2401 flow [2023-11-29 04:19:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:19:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:19:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2023-11-29 04:19:48,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-29 04:19:48,686 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 210 transitions. [2023-11-29 04:19:48,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 210 transitions. [2023-11-29 04:19:48,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:48,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 210 transitions. [2023-11-29 04:19:48,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:48,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:48,690 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:48,690 INFO L175 Difference]: Start difference. First operand has 82 places, 98 transitions, 950 flow. Second operand 10 states and 210 transitions. [2023-11-29 04:19:48,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 201 transitions, 2401 flow [2023-11-29 04:19:48,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 201 transitions, 2273 flow, removed 64 selfloop flow, removed 0 redundant places. [2023-11-29 04:19:48,745 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 1255 flow [2023-11-29 04:19:48,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1255, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2023-11-29 04:19:48,746 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2023-11-29 04:19:48,746 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 1255 flow [2023-11-29 04:19:48,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:48,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:48,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:48,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 04:19:48,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:48,947 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:48,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:48,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1255130824, now seen corresponding path program 1 times [2023-11-29 04:19:48,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:48,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619512198] [2023-11-29 04:19:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:48,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:48,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:48,949 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:48,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 04:19:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:49,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:19:49,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:49,270 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_39| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_47| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_47|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_47| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_39|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_47| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_39| (_ bv0 1))))) is different from true [2023-11-29 04:19:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:49,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:49,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:49,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619512198] [2023-11-29 04:19:49,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619512198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:49,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:49,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:19:49,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088485676] [2023-11-29 04:19:49,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:49,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:19:49,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:19:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:19:49,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:19:49,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 1255 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:49,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:49,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:19:49,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:49,597 INFO L124 PetriNetUnfolderBase]: 747/1569 cut-off events. [2023-11-29 04:19:49,597 INFO L125 PetriNetUnfolderBase]: For 10012/10952 co-relation queries the response was YES. [2023-11-29 04:19:49,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8759 conditions, 1569 events. 747/1569 cut-off events. For 10012/10952 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10394 event pairs, 156 based on Foata normal form. 126/1569 useless extension candidates. Maximal degree in co-relation 8709. Up to 872 conditions per place. [2023-11-29 04:19:49,618 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 39 selfloop transitions, 13 changer transitions 0/131 dead transitions. [2023-11-29 04:19:49,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 131 transitions, 1499 flow [2023-11-29 04:19:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:19:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:19:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:19:49,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:19:49,619 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:19:49,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:19:49,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:49,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:19:49,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:49,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:49,621 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:49,621 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 1255 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:19:49,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 131 transitions, 1499 flow [2023-11-29 04:19:49,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 131 transitions, 1442 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-11-29 04:19:49,646 INFO L231 Difference]: Finished difference. Result has 99 places, 122 transitions, 1298 flow [2023-11-29 04:19:49,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1298, PETRI_PLACES=99, PETRI_TRANSITIONS=122} [2023-11-29 04:19:49,647 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2023-11-29 04:19:49,648 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 122 transitions, 1298 flow [2023-11-29 04:19:49,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:49,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:49,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:49,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-29 04:19:49,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:49,849 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:49,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:49,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1758355290, now seen corresponding path program 2 times [2023-11-29 04:19:49,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:49,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212253551] [2023-11-29 04:19:49,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:19:49,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:49,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:49,851 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:49,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 04:19:49,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:19:49,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:19:49,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:19:49,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:50,140 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_48| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_40| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_48| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_40|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_48| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_40| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_48|) (_ bv0 1)))) is different from true [2023-11-29 04:19:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:50,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:50,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:50,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212253551] [2023-11-29 04:19:50,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212253551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:50,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:50,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:19:50,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880204649] [2023-11-29 04:19:50,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:50,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:19:50,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:50,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:19:50,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:19:50,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:19:50,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 122 transitions, 1298 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:50,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:50,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:19:50,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:50,482 INFO L124 PetriNetUnfolderBase]: 755/1598 cut-off events. [2023-11-29 04:19:50,482 INFO L125 PetriNetUnfolderBase]: For 11368/12437 co-relation queries the response was YES. [2023-11-29 04:19:50,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9545 conditions, 1598 events. 755/1598 cut-off events. For 11368/12437 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10698 event pairs, 156 based on Foata normal form. 135/1610 useless extension candidates. Maximal degree in co-relation 9494. Up to 883 conditions per place. [2023-11-29 04:19:50,500 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 36 selfloop transitions, 21 changer transitions 0/136 dead transitions. [2023-11-29 04:19:50,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 136 transitions, 1572 flow [2023-11-29 04:19:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:19:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:19:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:19:50,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:19:50,502 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:19:50,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:19:50,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:50,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:19:50,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:50,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:50,503 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:50,503 INFO L175 Difference]: Start difference. First operand has 99 places, 122 transitions, 1298 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:19:50,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 136 transitions, 1572 flow [2023-11-29 04:19:50,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 1558 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:50,531 INFO L231 Difference]: Finished difference. Result has 101 places, 127 transitions, 1418 flow [2023-11-29 04:19:50,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1418, PETRI_PLACES=101, PETRI_TRANSITIONS=127} [2023-11-29 04:19:50,532 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2023-11-29 04:19:50,532 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 127 transitions, 1418 flow [2023-11-29 04:19:50,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:50,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:50,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:50,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-29 04:19:50,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:50,734 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:50,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:50,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1986924656, now seen corresponding path program 1 times [2023-11-29 04:19:50,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:50,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298631467] [2023-11-29 04:19:50,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:50,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:50,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:50,737 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:50,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 04:19:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:50,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:19:50,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:51,007 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_49| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_41| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_49|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_49| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_41| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_49| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_41|)))) is different from true [2023-11-29 04:19:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:51,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:51,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:51,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298631467] [2023-11-29 04:19:51,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298631467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:51,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:51,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:19:51,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62503130] [2023-11-29 04:19:51,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:51,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:19:51,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:51,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:19:51,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:19:51,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:19:51,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 127 transitions, 1418 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:51,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:51,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:19:51,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:51,319 INFO L124 PetriNetUnfolderBase]: 779/1648 cut-off events. [2023-11-29 04:19:51,320 INFO L125 PetriNetUnfolderBase]: For 13128/14375 co-relation queries the response was YES. [2023-11-29 04:19:51,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10510 conditions, 1648 events. 779/1648 cut-off events. For 13128/14375 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11075 event pairs, 155 based on Foata normal form. 162/1682 useless extension candidates. Maximal degree in co-relation 10458. Up to 910 conditions per place. [2023-11-29 04:19:51,339 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 49 selfloop transitions, 13 changer transitions 0/141 dead transitions. [2023-11-29 04:19:51,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 141 transitions, 1714 flow [2023-11-29 04:19:51,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:19:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:19:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:19:51,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:19:51,341 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:19:51,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:19:51,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:51,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:19:51,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:51,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:51,342 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:51,343 INFO L175 Difference]: Start difference. First operand has 101 places, 127 transitions, 1418 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:19:51,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 141 transitions, 1714 flow [2023-11-29 04:19:51,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 141 transitions, 1664 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:51,369 INFO L231 Difference]: Finished difference. Result has 103 places, 132 transitions, 1488 flow [2023-11-29 04:19:51,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1488, PETRI_PLACES=103, PETRI_TRANSITIONS=132} [2023-11-29 04:19:51,370 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2023-11-29 04:19:51,370 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 132 transitions, 1488 flow [2023-11-29 04:19:51,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:51,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:51,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:51,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 04:19:51,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:51,571 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:51,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:51,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1763126810, now seen corresponding path program 2 times [2023-11-29 04:19:51,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:51,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835357715] [2023-11-29 04:19:51,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:19:51,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:51,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:51,573 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:51,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 04:19:51,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:19:51,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:19:51,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:19:51,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:51,805 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_50| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_42| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_50|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_50| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_42| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_50| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_42|)))) is different from true [2023-11-29 04:19:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:51,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:51,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:51,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835357715] [2023-11-29 04:19:51,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835357715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:51,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:51,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:19:51,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297915201] [2023-11-29 04:19:51,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:51,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:19:51,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:51,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:19:51,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:19:51,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:19:51,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 132 transitions, 1488 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:51,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:51,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:19:51,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:52,203 INFO L124 PetriNetUnfolderBase]: 787/1671 cut-off events. [2023-11-29 04:19:52,204 INFO L125 PetriNetUnfolderBase]: For 14230/15495 co-relation queries the response was YES. [2023-11-29 04:19:52,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10895 conditions, 1671 events. 787/1671 cut-off events. For 14230/15495 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11354 event pairs, 155 based on Foata normal form. 173/1717 useless extension candidates. Maximal degree in co-relation 10842. Up to 921 conditions per place. [2023-11-29 04:19:52,224 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 46 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2023-11-29 04:19:52,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 146 transitions, 1798 flow [2023-11-29 04:19:52,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:19:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:19:52,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:19:52,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:19:52,226 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:19:52,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:19:52,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:52,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:19:52,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:52,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:52,227 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:52,228 INFO L175 Difference]: Start difference. First operand has 103 places, 132 transitions, 1488 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:19:52,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 146 transitions, 1798 flow [2023-11-29 04:19:52,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 146 transitions, 1784 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:52,261 INFO L231 Difference]: Finished difference. Result has 105 places, 137 transitions, 1612 flow [2023-11-29 04:19:52,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1612, PETRI_PLACES=105, PETRI_TRANSITIONS=137} [2023-11-29 04:19:52,262 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 69 predicate places. [2023-11-29 04:19:52,262 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 137 transitions, 1612 flow [2023-11-29 04:19:52,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:52,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:52,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:52,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-29 04:19:52,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:52,463 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:52,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:52,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1131076429, now seen corresponding path program 1 times [2023-11-29 04:19:52,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:52,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210772779] [2023-11-29 04:19:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:52,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:52,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:52,465 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:52,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 04:19:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:52,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:19:52,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:52,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:19:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:52,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:52,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210772779] [2023-11-29 04:19:52,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210772779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:19:52,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:19:52,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-29 04:19:52,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546236979] [2023-11-29 04:19:52,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:19:52,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:19:52,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:52,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:19:52,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:19:52,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 04:19:52,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 1612 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:52,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:52,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 04:19:52,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:53,424 INFO L124 PetriNetUnfolderBase]: 1950/4041 cut-off events. [2023-11-29 04:19:53,424 INFO L125 PetriNetUnfolderBase]: For 43138/45506 co-relation queries the response was YES. [2023-11-29 04:19:53,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25759 conditions, 4041 events. 1950/4041 cut-off events. For 43138/45506 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 30962 event pairs, 229 based on Foata normal form. 618/4475 useless extension candidates. Maximal degree in co-relation 25706. Up to 1967 conditions per place. [2023-11-29 04:19:53,507 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 130 selfloop transitions, 28 changer transitions 0/239 dead transitions. [2023-11-29 04:19:53,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 239 transitions, 3288 flow [2023-11-29 04:19:53,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:19:53,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:19:53,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2023-11-29 04:19:53,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7523809523809524 [2023-11-29 04:19:53,509 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 158 transitions. [2023-11-29 04:19:53,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 158 transitions. [2023-11-29 04:19:53,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:53,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 158 transitions. [2023-11-29 04:19:53,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:53,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:53,512 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:53,512 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 1612 flow. Second operand 6 states and 158 transitions. [2023-11-29 04:19:53,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 239 transitions, 3288 flow [2023-11-29 04:19:53,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 239 transitions, 3218 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:53,634 INFO L231 Difference]: Finished difference. Result has 112 places, 148 transitions, 1864 flow [2023-11-29 04:19:53,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1864, PETRI_PLACES=112, PETRI_TRANSITIONS=148} [2023-11-29 04:19:53,635 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 76 predicate places. [2023-11-29 04:19:53,635 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 148 transitions, 1864 flow [2023-11-29 04:19:53,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:53,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:53,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:53,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-29 04:19:53,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:53,837 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:53,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:53,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1348439954, now seen corresponding path program 1 times [2023-11-29 04:19:53,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:53,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771518495] [2023-11-29 04:19:53,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:53,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:53,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:53,839 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:53,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 04:19:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:53,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:19:53,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:54,118 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_51| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_43| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_51|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_51| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_43| (_ bv0 1))) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_51| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_43|) (_ bv0 1)))) is different from true [2023-11-29 04:19:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:54,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:54,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:54,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771518495] [2023-11-29 04:19:54,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771518495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:54,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:54,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:19:54,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770808382] [2023-11-29 04:19:54,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:54,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:19:54,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:54,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:19:54,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:19:54,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:19:54,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 148 transitions, 1864 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:54,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:54,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:19:54,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:54,820 INFO L124 PetriNetUnfolderBase]: 1423/3295 cut-off events. [2023-11-29 04:19:54,820 INFO L125 PetriNetUnfolderBase]: For 35973/38320 co-relation queries the response was YES. [2023-11-29 04:19:54,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22480 conditions, 3295 events. 1423/3295 cut-off events. For 35973/38320 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 26758 event pairs, 374 based on Foata normal form. 269/3298 useless extension candidates. Maximal degree in co-relation 22424. Up to 1686 conditions per place. [2023-11-29 04:19:54,869 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 67 selfloop transitions, 16 changer transitions 0/163 dead transitions. [2023-11-29 04:19:54,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 163 transitions, 2260 flow [2023-11-29 04:19:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:19:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:19:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:19:54,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:19:54,871 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:19:54,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:19:54,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:54,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:19:54,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:54,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:54,872 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:54,872 INFO L175 Difference]: Start difference. First operand has 112 places, 148 transitions, 1864 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:19:54,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 163 transitions, 2260 flow [2023-11-29 04:19:54,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 163 transitions, 2204 flow, removed 21 selfloop flow, removed 1 redundant places. [2023-11-29 04:19:54,958 INFO L231 Difference]: Finished difference. Result has 115 places, 150 transitions, 1909 flow [2023-11-29 04:19:54,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1909, PETRI_PLACES=115, PETRI_TRANSITIONS=150} [2023-11-29 04:19:54,959 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 79 predicate places. [2023-11-29 04:19:54,959 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 150 transitions, 1909 flow [2023-11-29 04:19:54,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:54,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:54,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:54,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-29 04:19:55,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:55,160 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:55,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:55,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1183398614, now seen corresponding path program 2 times [2023-11-29 04:19:55,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:55,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705777559] [2023-11-29 04:19:55,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:19:55,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:55,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:55,162 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:55,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 04:19:55,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:19:55,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:19:55,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:19:55,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:55,409 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_52| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_44| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_52|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_52| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_44| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_52| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_44|)))) is different from true [2023-11-29 04:19:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:55,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:55,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:55,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705777559] [2023-11-29 04:19:55,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705777559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:55,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:55,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:19:55,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632455479] [2023-11-29 04:19:55,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:55,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:19:55,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:19:55,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:19:55,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:19:55,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 150 transitions, 1909 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:55,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:55,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:19:55,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:56,110 INFO L124 PetriNetUnfolderBase]: 1407/3271 cut-off events. [2023-11-29 04:19:56,110 INFO L125 PetriNetUnfolderBase]: For 36678/39061 co-relation queries the response was YES. [2023-11-29 04:19:56,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22681 conditions, 3271 events. 1407/3271 cut-off events. For 36678/39061 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 26648 event pairs, 368 based on Foata normal form. 273/3284 useless extension candidates. Maximal degree in co-relation 22622. Up to 1662 conditions per place. [2023-11-29 04:19:56,187 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 61 selfloop transitions, 24 changer transitions 0/165 dead transitions. [2023-11-29 04:19:56,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 165 transitions, 2303 flow [2023-11-29 04:19:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:19:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:19:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:19:56,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:19:56,189 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:19:56,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:19:56,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:56,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:19:56,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:56,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:56,190 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:56,191 INFO L175 Difference]: Start difference. First operand has 115 places, 150 transitions, 1909 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:19:56,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 165 transitions, 2303 flow [2023-11-29 04:19:56,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 165 transitions, 2286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:56,289 INFO L231 Difference]: Finished difference. Result has 117 places, 152 transitions, 2007 flow [2023-11-29 04:19:56,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2007, PETRI_PLACES=117, PETRI_TRANSITIONS=152} [2023-11-29 04:19:56,290 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 81 predicate places. [2023-11-29 04:19:56,290 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 152 transitions, 2007 flow [2023-11-29 04:19:56,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:56,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:56,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:56,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-29 04:19:56,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:56,491 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:56,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:56,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1591410048, now seen corresponding path program 1 times [2023-11-29 04:19:56,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:56,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843717007] [2023-11-29 04:19:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:56,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:56,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:56,493 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:56,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 04:19:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:56,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:19:56,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:56,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:56,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:19:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:56,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:56,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843717007] [2023-11-29 04:19:56,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843717007] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:19:56,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:19:56,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-29 04:19:56,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534528101] [2023-11-29 04:19:56,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:19:56,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:19:56,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:56,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:19:56,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:19:56,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 04:19:56,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 152 transitions, 2007 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:56,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:56,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 04:19:56,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:58,251 INFO L124 PetriNetUnfolderBase]: 3757/8395 cut-off events. [2023-11-29 04:19:58,251 INFO L125 PetriNetUnfolderBase]: For 111492/115784 co-relation queries the response was YES. [2023-11-29 04:19:58,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56502 conditions, 8395 events. 3757/8395 cut-off events. For 111492/115784 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 76925 event pairs, 570 based on Foata normal form. 1169/9183 useless extension candidates. Maximal degree in co-relation 56443. Up to 3874 conditions per place. [2023-11-29 04:19:58,385 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 162 selfloop transitions, 30 changer transitions 0/274 dead transitions. [2023-11-29 04:19:58,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 274 transitions, 4475 flow [2023-11-29 04:19:58,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:19:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:19:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2023-11-29 04:19:58,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-29 04:19:58,387 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 150 transitions. [2023-11-29 04:19:58,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 150 transitions. [2023-11-29 04:19:58,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:58,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 150 transitions. [2023-11-29 04:19:58,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:58,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:58,389 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:58,389 INFO L175 Difference]: Start difference. First operand has 117 places, 152 transitions, 2007 flow. Second operand 6 states and 150 transitions. [2023-11-29 04:19:58,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 274 transitions, 4475 flow [2023-11-29 04:19:58,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 274 transitions, 4412 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:58,755 INFO L231 Difference]: Finished difference. Result has 124 places, 163 transitions, 2288 flow [2023-11-29 04:19:58,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2288, PETRI_PLACES=124, PETRI_TRANSITIONS=163} [2023-11-29 04:19:58,756 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 88 predicate places. [2023-11-29 04:19:58,756 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 163 transitions, 2288 flow [2023-11-29 04:19:58,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:58,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:58,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:58,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-11-29 04:19:58,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:58,957 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:19:58,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:58,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2039135433, now seen corresponding path program 1 times [2023-11-29 04:19:58,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:19:58,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617727814] [2023-11-29 04:19:58,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:58,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:19:58,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:19:58,959 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:19:58,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 04:19:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:59,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:19:59,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:59,195 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_45| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_53| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_53| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_45|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_53| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_45| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_53|) (_ bv0 1)))) is different from true [2023-11-29 04:19:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:59,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:59,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:19:59,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617727814] [2023-11-29 04:19:59,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617727814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:59,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:59,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:19:59,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121284366] [2023-11-29 04:19:59,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:59,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:19:59,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:19:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:19:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:19:59,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:19:59,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 163 transitions, 2288 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:59,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:59,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:19:59,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:00,499 INFO L124 PetriNetUnfolderBase]: 2748/6664 cut-off events. [2023-11-29 04:20:00,499 INFO L125 PetriNetUnfolderBase]: For 89166/94010 co-relation queries the response was YES. [2023-11-29 04:20:00,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48272 conditions, 6664 events. 2748/6664 cut-off events. For 89166/94010 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 61789 event pairs, 806 based on Foata normal form. 607/6666 useless extension candidates. Maximal degree in co-relation 48210. Up to 3171 conditions per place. [2023-11-29 04:20:00,590 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 79 selfloop transitions, 20 changer transitions 0/180 dead transitions. [2023-11-29 04:20:00,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 180 transitions, 2762 flow [2023-11-29 04:20:00,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:20:00,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:20:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:20:00,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:20:00,592 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:20:00,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:20:00,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:00,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:20:00,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:00,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:00,594 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:00,594 INFO L175 Difference]: Start difference. First operand has 124 places, 163 transitions, 2288 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:20:00,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 180 transitions, 2762 flow [2023-11-29 04:20:00,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 180 transitions, 2704 flow, removed 21 selfloop flow, removed 1 redundant places. [2023-11-29 04:20:00,919 INFO L231 Difference]: Finished difference. Result has 127 places, 165 transitions, 2345 flow [2023-11-29 04:20:00,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2345, PETRI_PLACES=127, PETRI_TRANSITIONS=165} [2023-11-29 04:20:00,919 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 91 predicate places. [2023-11-29 04:20:00,919 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 165 transitions, 2345 flow [2023-11-29 04:20:00,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:00,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:00,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:00,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 04:20:01,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:01,120 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:20:01,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:01,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1177651679, now seen corresponding path program 2 times [2023-11-29 04:20:01,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:20:01,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184540734] [2023-11-29 04:20:01,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:20:01,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:01,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:20:01,123 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:20:01,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 04:20:01,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:20:01,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:20:01,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:20:01,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:01,349 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_46| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_54| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_54|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_54| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_46|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_54| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 04:20:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:20:01,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:20:01,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:20:01,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184540734] [2023-11-29 04:20:01,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184540734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:01,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:01,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:20:01,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222050063] [2023-11-29 04:20:01,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:01,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:20:01,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:20:01,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:20:01,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:20:01,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:20:01,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 165 transitions, 2345 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:01,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:01,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:20:01,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:02,914 INFO L124 PetriNetUnfolderBase]: 2729/6637 cut-off events. [2023-11-29 04:20:02,914 INFO L125 PetriNetUnfolderBase]: For 92396/97284 co-relation queries the response was YES. [2023-11-29 04:20:02,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48814 conditions, 6637 events. 2729/6637 cut-off events. For 92396/97284 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 61609 event pairs, 800 based on Foata normal form. 635/6676 useless extension candidates. Maximal degree in co-relation 48749. Up to 3144 conditions per place. [2023-11-29 04:20:03,005 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 69 selfloop transitions, 32 changer transitions 0/182 dead transitions. [2023-11-29 04:20:03,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 2817 flow [2023-11-29 04:20:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:20:03,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:20:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:20:03,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:20:03,006 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:20:03,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:20:03,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:03,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:20:03,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:03,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:03,008 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:03,008 INFO L175 Difference]: Start difference. First operand has 127 places, 165 transitions, 2345 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:20:03,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 2817 flow [2023-11-29 04:20:03,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 182 transitions, 2796 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:20:03,287 INFO L231 Difference]: Finished difference. Result has 129 places, 167 transitions, 2465 flow [2023-11-29 04:20:03,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2465, PETRI_PLACES=129, PETRI_TRANSITIONS=167} [2023-11-29 04:20:03,288 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 93 predicate places. [2023-11-29 04:20:03,288 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 167 transitions, 2465 flow [2023-11-29 04:20:03,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:03,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:03,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:03,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 04:20:03,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:03,489 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:20:03,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:03,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1347854058, now seen corresponding path program 1 times [2023-11-29 04:20:03,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:20:03,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428443033] [2023-11-29 04:20:03,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:03,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:03,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:20:03,491 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:20:03,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 04:20:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:03,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:20:03,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:20:03,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:20:03,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:20:03,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428443033] [2023-11-29 04:20:03,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428443033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:03,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:03,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:20:03,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018287674] [2023-11-29 04:20:03,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:03,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:20:03,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:20:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:20:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:20:03,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:20:03,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 167 transitions, 2465 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:03,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:03,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:20:03,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:07,613 INFO L124 PetriNetUnfolderBase]: 9606/17825 cut-off events. [2023-11-29 04:20:07,613 INFO L125 PetriNetUnfolderBase]: For 298070/298888 co-relation queries the response was YES. [2023-11-29 04:20:07,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134982 conditions, 17825 events. 9606/17825 cut-off events. For 298070/298888 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 149338 event pairs, 1403 based on Foata normal form. 225/17918 useless extension candidates. Maximal degree in co-relation 134917. Up to 7193 conditions per place. [2023-11-29 04:20:08,082 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 384 selfloop transitions, 54 changer transitions 0/447 dead transitions. [2023-11-29 04:20:08,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 447 transitions, 8410 flow [2023-11-29 04:20:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:20:08,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 04:20:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 321 transitions. [2023-11-29 04:20:08,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2023-11-29 04:20:08,086 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 321 transitions. [2023-11-29 04:20:08,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 321 transitions. [2023-11-29 04:20:08,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:08,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 321 transitions. [2023-11-29 04:20:08,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 21.4) internal successors, (321), 15 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:08,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 35.0) internal successors, (560), 16 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:08,091 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 35.0) internal successors, (560), 16 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:08,091 INFO L175 Difference]: Start difference. First operand has 129 places, 167 transitions, 2465 flow. Second operand 15 states and 321 transitions. [2023-11-29 04:20:08,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 447 transitions, 8410 flow [2023-11-29 04:20:09,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 447 transitions, 8267 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-11-29 04:20:09,168 INFO L231 Difference]: Finished difference. Result has 149 places, 190 transitions, 2919 flow [2023-11-29 04:20:09,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2919, PETRI_PLACES=149, PETRI_TRANSITIONS=190} [2023-11-29 04:20:09,169 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 113 predicate places. [2023-11-29 04:20:09,169 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 190 transitions, 2919 flow [2023-11-29 04:20:09,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:09,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:09,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:09,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 04:20:09,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:09,370 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:20:09,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:09,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1682770346, now seen corresponding path program 2 times [2023-11-29 04:20:09,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:20:09,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147452321] [2023-11-29 04:20:09,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:20:09,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:09,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:20:09,372 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:20:09,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 04:20:09,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:20:09,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:20:09,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:20:09,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:20:09,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:20:09,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:20:09,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147452321] [2023-11-29 04:20:09,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147452321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:09,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:09,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:20:09,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603341355] [2023-11-29 04:20:09,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:09,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:20:09,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:20:09,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:20:09,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:20:09,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:20:09,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 190 transitions, 2919 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:09,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:09,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:20:09,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:13,965 INFO L124 PetriNetUnfolderBase]: 10706/19796 cut-off events. [2023-11-29 04:20:13,965 INFO L125 PetriNetUnfolderBase]: For 405707/406665 co-relation queries the response was YES. [2023-11-29 04:20:14,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160634 conditions, 19796 events. 10706/19796 cut-off events. For 405707/406665 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 167805 event pairs, 1772 based on Foata normal form. 331/19972 useless extension candidates. Maximal degree in co-relation 160561. Up to 8087 conditions per place. [2023-11-29 04:20:14,302 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 341 selfloop transitions, 62 changer transitions 0/412 dead transitions. [2023-11-29 04:20:14,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 412 transitions, 7787 flow [2023-11-29 04:20:14,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:20:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 04:20:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 255 transitions. [2023-11-29 04:20:14,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2023-11-29 04:20:14,305 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 255 transitions. [2023-11-29 04:20:14,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 255 transitions. [2023-11-29 04:20:14,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:14,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 255 transitions. [2023-11-29 04:20:14,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.25) internal successors, (255), 12 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:14,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:14,308 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:14,308 INFO L175 Difference]: Start difference. First operand has 149 places, 190 transitions, 2919 flow. Second operand 12 states and 255 transitions. [2023-11-29 04:20:14,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 412 transitions, 7787 flow [2023-11-29 04:20:16,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 412 transitions, 7571 flow, removed 94 selfloop flow, removed 5 redundant places. [2023-11-29 04:20:16,617 INFO L231 Difference]: Finished difference. Result has 162 places, 211 transitions, 3317 flow [2023-11-29 04:20:16,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3317, PETRI_PLACES=162, PETRI_TRANSITIONS=211} [2023-11-29 04:20:16,618 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 126 predicate places. [2023-11-29 04:20:16,618 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 211 transitions, 3317 flow [2023-11-29 04:20:16,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:16,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:16,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:16,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-11-29 04:20:16,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:16,819 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:20:16,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:16,819 INFO L85 PathProgramCache]: Analyzing trace with hash 481426206, now seen corresponding path program 3 times [2023-11-29 04:20:16,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:20:16,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441568062] [2023-11-29 04:20:16,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:20:16,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:16,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:20:16,820 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:20:16,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-29 04:20:16,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 04:20:16,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:20:16,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:20:16,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:20:16,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:20:16,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:20:16,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441568062] [2023-11-29 04:20:16,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441568062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:16,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:16,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:20:16,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432533986] [2023-11-29 04:20:16,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:16,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:20:16,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:20:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:20:16,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:20:16,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:20:16,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 211 transitions, 3317 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:16,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:16,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:20:16,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:23,054 INFO L124 PetriNetUnfolderBase]: 13037/24330 cut-off events. [2023-11-29 04:20:23,054 INFO L125 PetriNetUnfolderBase]: For 532736/534156 co-relation queries the response was YES. [2023-11-29 04:20:23,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204320 conditions, 24330 events. 13037/24330 cut-off events. For 532736/534156 co-relation queries the response was YES. Maximal size of possible extension queue 977. Compared 215360 event pairs, 3113 based on Foata normal form. 403/24526 useless extension candidates. Maximal degree in co-relation 204239. Up to 10246 conditions per place. [2023-11-29 04:20:23,444 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 362 selfloop transitions, 50 changer transitions 0/421 dead transitions. [2023-11-29 04:20:23,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 421 transitions, 8027 flow [2023-11-29 04:20:23,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:20:23,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 04:20:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2023-11-29 04:20:23,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2023-11-29 04:20:23,446 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 248 transitions. [2023-11-29 04:20:23,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 248 transitions. [2023-11-29 04:20:23,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:23,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 248 transitions. [2023-11-29 04:20:23,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:23,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:23,448 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:23,448 INFO L175 Difference]: Start difference. First operand has 162 places, 211 transitions, 3317 flow. Second operand 12 states and 248 transitions. [2023-11-29 04:20:23,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 421 transitions, 8027 flow [2023-11-29 04:20:26,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 421 transitions, 7948 flow, removed 34 selfloop flow, removed 2 redundant places. [2023-11-29 04:20:26,651 INFO L231 Difference]: Finished difference. Result has 176 places, 223 transitions, 3650 flow [2023-11-29 04:20:26,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3650, PETRI_PLACES=176, PETRI_TRANSITIONS=223} [2023-11-29 04:20:26,652 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 140 predicate places. [2023-11-29 04:20:26,653 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 223 transitions, 3650 flow [2023-11-29 04:20:26,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:26,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:26,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:26,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-11-29 04:20:26,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:26,853 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:20:26,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1772587832, now seen corresponding path program 4 times [2023-11-29 04:20:26,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:20:26,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676821660] [2023-11-29 04:20:26,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:20:26,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:26,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:20:26,856 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:20:26,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-29 04:20:26,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:20:26,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:20:26,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:20:26,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:20:26,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:20:26,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:20:26,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676821660] [2023-11-29 04:20:26,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676821660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:26,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:26,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:20:26,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854489374] [2023-11-29 04:20:26,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:26,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:20:26,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:20:26,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:20:26,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:20:26,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:20:26,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 223 transitions, 3650 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:26,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:26,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:20:26,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:33,685 INFO L124 PetriNetUnfolderBase]: 14032/26268 cut-off events. [2023-11-29 04:20:33,685 INFO L125 PetriNetUnfolderBase]: For 642603/643761 co-relation queries the response was YES. [2023-11-29 04:20:33,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226729 conditions, 26268 events. 14032/26268 cut-off events. For 642603/643761 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 236220 event pairs, 3183 based on Foata normal form. 204/26273 useless extension candidates. Maximal degree in co-relation 226642. Up to 11052 conditions per place. [2023-11-29 04:20:34,316 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 312 selfloop transitions, 65 changer transitions 0/386 dead transitions. [2023-11-29 04:20:34,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 386 transitions, 7394 flow [2023-11-29 04:20:34,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:20:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:20:34,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2023-11-29 04:20:34,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6025974025974026 [2023-11-29 04:20:34,319 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 232 transitions. [2023-11-29 04:20:34,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 232 transitions. [2023-11-29 04:20:34,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:34,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 232 transitions. [2023-11-29 04:20:34,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.09090909090909) internal successors, (232), 11 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:34,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:34,321 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:34,321 INFO L175 Difference]: Start difference. First operand has 176 places, 223 transitions, 3650 flow. Second operand 11 states and 232 transitions. [2023-11-29 04:20:34,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 386 transitions, 7394 flow [2023-11-29 04:20:38,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 386 transitions, 7295 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-11-29 04:20:38,729 INFO L231 Difference]: Finished difference. Result has 186 places, 230 transitions, 3975 flow [2023-11-29 04:20:38,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3561, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3975, PETRI_PLACES=186, PETRI_TRANSITIONS=230} [2023-11-29 04:20:38,729 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 150 predicate places. [2023-11-29 04:20:38,730 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 230 transitions, 3975 flow [2023-11-29 04:20:38,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:38,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:38,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:38,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-11-29 04:20:38,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:38,930 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:20:38,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:38,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1053903928, now seen corresponding path program 1 times [2023-11-29 04:20:38,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:20:38,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574450298] [2023-11-29 04:20:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:38,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:38,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:20:38,932 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:20:38,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-29 04:20:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:39,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:20:39,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:39,173 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_47| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_55| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_55|) (_ bv0 1)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_55| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_47|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_55| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_47| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 04:20:39,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:20:39,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:20:39,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:20:39,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574450298] [2023-11-29 04:20:39,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574450298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:39,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:39,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:20:39,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538029565] [2023-11-29 04:20:39,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:39,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:20:39,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:20:39,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:20:39,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:20:39,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:20:39,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 230 transitions, 3975 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:39,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:39,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:20:39,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:43,525 INFO L124 PetriNetUnfolderBase]: 7074/16892 cut-off events. [2023-11-29 04:20:43,525 INFO L125 PetriNetUnfolderBase]: For 390852/406272 co-relation queries the response was YES. [2023-11-29 04:20:43,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143728 conditions, 16892 events. 7074/16892 cut-off events. For 390852/406272 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 182684 event pairs, 2167 based on Foata normal form. 2447/17969 useless extension candidates. Maximal degree in co-relation 143634. Up to 7878 conditions per place. [2023-11-29 04:20:43,831 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 92 selfloop transitions, 14 changer transitions 0/250 dead transitions. [2023-11-29 04:20:43,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 250 transitions, 4503 flow [2023-11-29 04:20:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:20:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:20:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:20:43,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:20:43,833 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:20:43,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:20:43,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:43,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:20:43,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:43,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:43,834 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:43,834 INFO L175 Difference]: Start difference. First operand has 186 places, 230 transitions, 3975 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:20:43,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 250 transitions, 4503 flow [2023-11-29 04:20:45,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 250 transitions, 4381 flow, removed 44 selfloop flow, removed 5 redundant places. [2023-11-29 04:20:45,907 INFO L231 Difference]: Finished difference. Result has 185 places, 232 transitions, 3944 flow [2023-11-29 04:20:45,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3853, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3944, PETRI_PLACES=185, PETRI_TRANSITIONS=232} [2023-11-29 04:20:45,908 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 149 predicate places. [2023-11-29 04:20:45,908 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 232 transitions, 3944 flow [2023-11-29 04:20:45,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:45,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:45,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:45,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-11-29 04:20:46,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:46,109 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:20:46,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1218072722, now seen corresponding path program 2 times [2023-11-29 04:20:46,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:20:46,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646474941] [2023-11-29 04:20:46,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:20:46,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:46,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:20:46,111 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:20:46,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-29 04:20:46,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:20:46,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:20:46,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:20:46,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:46,353 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_48| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_56| (_ BitVec 32))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_56| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_48| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_56|) (_ bv0 1)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_56| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_48|) (_ bv0 1)))) is different from true [2023-11-29 04:20:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:20:46,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:20:46,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:20:46,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646474941] [2023-11-29 04:20:46,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646474941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:46,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:46,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:20:46,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50541885] [2023-11-29 04:20:46,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:46,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:20:46,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:20:46,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:20:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:20:46,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:20:46,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 232 transitions, 3944 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:46,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:46,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:20:46,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:50,895 INFO L124 PetriNetUnfolderBase]: 7150/17135 cut-off events. [2023-11-29 04:20:50,896 INFO L125 PetriNetUnfolderBase]: For 407392/422897 co-relation queries the response was YES. [2023-11-29 04:20:51,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147420 conditions, 17135 events. 7150/17135 cut-off events. For 407392/422897 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 186276 event pairs, 2224 based on Foata normal form. 2247/17986 useless extension candidates. Maximal degree in co-relation 147324. Up to 7912 conditions per place. [2023-11-29 04:20:51,409 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 88 selfloop transitions, 20 changer transitions 0/252 dead transitions. [2023-11-29 04:20:51,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 252 transitions, 4484 flow [2023-11-29 04:20:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:20:51,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:20:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:20:51,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:20:51,410 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:20:51,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:20:51,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:51,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:20:51,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:51,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:51,411 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:51,411 INFO L175 Difference]: Start difference. First operand has 185 places, 232 transitions, 3944 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:20:51,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 252 transitions, 4484 flow [2023-11-29 04:20:53,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 252 transitions, 4463 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 04:20:53,508 INFO L231 Difference]: Finished difference. Result has 187 places, 234 transitions, 4036 flow [2023-11-29 04:20:53,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3923, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4036, PETRI_PLACES=187, PETRI_TRANSITIONS=234} [2023-11-29 04:20:53,509 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 151 predicate places. [2023-11-29 04:20:53,509 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 234 transitions, 4036 flow [2023-11-29 04:20:53,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:53,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:53,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:53,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-11-29 04:20:53,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:53,710 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:20:53,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:53,711 INFO L85 PathProgramCache]: Analyzing trace with hash 642476958, now seen corresponding path program 3 times [2023-11-29 04:20:53,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:20:53,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863909528] [2023-11-29 04:20:53,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:20:53,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:20:53,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:20:53,712 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:20:53,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-29 04:20:53,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 04:20:53,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:20:53,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:20:53,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:54,033 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_49| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_57| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_57| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_49|) (_ bv0 1)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_57| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_49| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_57|) (_ bv0 1)))) is different from true [2023-11-29 04:20:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:20:54,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:20:54,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:20:54,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863909528] [2023-11-29 04:20:54,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863909528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:54,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:54,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:20:54,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851991412] [2023-11-29 04:20:54,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:54,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:20:54,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:20:54,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:20:54,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:20:54,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:20:54,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 234 transitions, 4036 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:54,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:54,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:20:54,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:58,486 INFO L124 PetriNetUnfolderBase]: 7289/17476 cut-off events. [2023-11-29 04:20:58,487 INFO L125 PetriNetUnfolderBase]: For 419385/435448 co-relation queries the response was YES. [2023-11-29 04:20:58,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151811 conditions, 17476 events. 7289/17476 cut-off events. For 419385/435448 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 190579 event pairs, 2312 based on Foata normal form. 2225/18253 useless extension candidates. Maximal degree in co-relation 151714. Up to 8044 conditions per place. [2023-11-29 04:20:58,808 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 90 selfloop transitions, 20 changer transitions 0/254 dead transitions. [2023-11-29 04:20:58,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 254 transitions, 4588 flow [2023-11-29 04:20:58,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:20:58,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:20:58,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:20:58,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:20:58,809 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:20:58,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:20:58,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:58,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:20:58,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:58,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:58,811 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:58,811 INFO L175 Difference]: Start difference. First operand has 187 places, 234 transitions, 4036 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:20:58,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 254 transitions, 4588 flow [2023-11-29 04:21:01,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 254 transitions, 4553 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-29 04:21:01,182 INFO L231 Difference]: Finished difference. Result has 189 places, 236 transitions, 4122 flow [2023-11-29 04:21:01,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4009, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4122, PETRI_PLACES=189, PETRI_TRANSITIONS=236} [2023-11-29 04:21:01,182 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 153 predicate places. [2023-11-29 04:21:01,183 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 236 transitions, 4122 flow [2023-11-29 04:21:01,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:01,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:01,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:01,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-11-29 04:21:01,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:21:01,384 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:21:01,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:01,384 INFO L85 PathProgramCache]: Analyzing trace with hash -681643506, now seen corresponding path program 4 times [2023-11-29 04:21:01,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:21:01,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259838638] [2023-11-29 04:21:01,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:21:01,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:21:01,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:21:01,386 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:21:01,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-29 04:21:01,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:21:01,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:21:01,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:21:01,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:21:01,627 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id1~0#1.base_58| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_50| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_58| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_50| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_58|)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_58| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_50|) (_ bv0 1)))) is different from true [2023-11-29 04:21:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:01,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:21:01,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:21:01,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259838638] [2023-11-29 04:21:01,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259838638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:01,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:01,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:21:01,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188691192] [2023-11-29 04:21:01,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:01,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:21:01,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:21:01,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:21:01,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 04:21:01,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-29 04:21:01,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 236 transitions, 4122 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:01,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:01,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-29 04:21:01,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:06,417 INFO L124 PetriNetUnfolderBase]: 7086/17146 cut-off events. [2023-11-29 04:21:06,417 INFO L125 PetriNetUnfolderBase]: For 431697/447080 co-relation queries the response was YES. [2023-11-29 04:21:06,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150426 conditions, 17146 events. 7086/17146 cut-off events. For 431697/447080 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 187405 event pairs, 2175 based on Foata normal form. 2207/17967 useless extension candidates. Maximal degree in co-relation 150328. Up to 7763 conditions per place. [2023-11-29 04:21:06,887 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 86 selfloop transitions, 26 changer transitions 0/256 dead transitions. [2023-11-29 04:21:06,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 256 transitions, 4678 flow [2023-11-29 04:21:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:21:06,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:21:06,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-29 04:21:06,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-29 04:21:06,888 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-29 04:21:06,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-29 04:21:06,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:06,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-29 04:21:06,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:06,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:06,890 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:06,890 INFO L175 Difference]: Start difference. First operand has 189 places, 236 transitions, 4122 flow. Second operand 4 states and 73 transitions. [2023-11-29 04:21:06,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 256 transitions, 4678 flow [2023-11-29 04:21:08,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 256 transitions, 4657 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:21:08,978 INFO L231 Difference]: Finished difference. Result has 191 places, 238 transitions, 4236 flow [2023-11-29 04:21:08,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4101, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4236, PETRI_PLACES=191, PETRI_TRANSITIONS=238} [2023-11-29 04:21:08,979 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 155 predicate places. [2023-11-29 04:21:08,979 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 238 transitions, 4236 flow [2023-11-29 04:21:08,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:08,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:08,980 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:08,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-11-29 04:21:09,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:21:09,180 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:21:09,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:09,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1140934613, now seen corresponding path program 1 times [2023-11-29 04:21:09,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:21:09,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118166587] [2023-11-29 04:21:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:09,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:21:09,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:21:09,182 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:21:09,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-29 04:21:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:09,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:21:09,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:21:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:09,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:21:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:09,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:21:09,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118166587] [2023-11-29 04:21:09,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118166587] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:21:09,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:21:09,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 04:21:09,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997687274] [2023-11-29 04:21:09,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:21:09,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:21:09,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:21:09,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:21:09,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:21:09,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:21:09,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 238 transitions, 4236 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:09,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:09,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:21:09,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:19,121 INFO L124 PetriNetUnfolderBase]: 16921/31855 cut-off events. [2023-11-29 04:21:19,121 INFO L125 PetriNetUnfolderBase]: For 1032332/1032568 co-relation queries the response was YES. [2023-11-29 04:21:19,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299707 conditions, 31855 events. 16921/31855 cut-off events. For 1032332/1032568 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 297737 event pairs, 617 based on Foata normal form. 191/32009 useless extension candidates. Maximal degree in co-relation 299609. Up to 13344 conditions per place. [2023-11-29 04:21:19,867 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 603 selfloop transitions, 121 changer transitions 0/733 dead transitions. [2023-11-29 04:21:19,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 733 transitions, 16410 flow [2023-11-29 04:21:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 04:21:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 04:21:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 497 transitions. [2023-11-29 04:21:19,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2023-11-29 04:21:19,870 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 497 transitions. [2023-11-29 04:21:19,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 497 transitions. [2023-11-29 04:21:19,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:19,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 497 transitions. [2023-11-29 04:21:19,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 20.708333333333332) internal successors, (497), 24 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:19,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 35.0) internal successors, (875), 25 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:19,873 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 35.0) internal successors, (875), 25 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:19,873 INFO L175 Difference]: Start difference. First operand has 191 places, 238 transitions, 4236 flow. Second operand 24 states and 497 transitions. [2023-11-29 04:21:19,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 733 transitions, 16410 flow [2023-11-29 04:21:28,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 733 transitions, 16129 flow, removed 76 selfloop flow, removed 2 redundant places. [2023-11-29 04:21:28,021 INFO L231 Difference]: Finished difference. Result has 220 places, 273 transitions, 5481 flow [2023-11-29 04:21:28,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4197, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=5481, PETRI_PLACES=220, PETRI_TRANSITIONS=273} [2023-11-29 04:21:28,022 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 184 predicate places. [2023-11-29 04:21:28,022 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 273 transitions, 5481 flow [2023-11-29 04:21:28,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:28,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:28,023 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:28,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-11-29 04:21:28,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:21:28,223 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:21:28,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:28,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1871951362, now seen corresponding path program 1 times [2023-11-29 04:21:28,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:21:28,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759523506] [2023-11-29 04:21:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:28,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:21:28,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:21:28,225 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:21:28,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-11-29 04:21:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:28,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:21:28,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:21:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:28,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:21:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:28,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:21:28,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759523506] [2023-11-29 04:21:28,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759523506] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:21:28,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:21:28,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 04:21:28,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669896724] [2023-11-29 04:21:28,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:21:28,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:21:28,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:21:28,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:21:28,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:21:28,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:21:28,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 273 transitions, 5481 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:28,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:28,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:21:28,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:40,962 INFO L124 PetriNetUnfolderBase]: 20670/38631 cut-off events. [2023-11-29 04:21:40,962 INFO L125 PetriNetUnfolderBase]: For 1415167/1415403 co-relation queries the response was YES. [2023-11-29 04:21:41,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377592 conditions, 38631 events. 20670/38631 cut-off events. For 1415167/1415403 co-relation queries the response was YES. Maximal size of possible extension queue 1665. Compared 368349 event pairs, 4469 based on Foata normal form. 291/38871 useless extension candidates. Maximal degree in co-relation 377486. Up to 16141 conditions per place. [2023-11-29 04:21:41,905 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 659 selfloop transitions, 107 changer transitions 0/775 dead transitions. [2023-11-29 04:21:41,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 775 transitions, 18885 flow [2023-11-29 04:21:41,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 04:21:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 04:21:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 469 transitions. [2023-11-29 04:21:41,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090909090909091 [2023-11-29 04:21:41,907 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 469 transitions. [2023-11-29 04:21:41,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 469 transitions. [2023-11-29 04:21:41,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:41,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 469 transitions. [2023-11-29 04:21:41,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 21.318181818181817) internal successors, (469), 22 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:41,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 35.0) internal successors, (805), 23 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:41,910 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 35.0) internal successors, (805), 23 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:41,910 INFO L175 Difference]: Start difference. First operand has 220 places, 273 transitions, 5481 flow. Second operand 22 states and 469 transitions. [2023-11-29 04:21:41,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 775 transitions, 18885 flow [2023-11-29 04:21:55,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 775 transitions, 17552 flow, removed 639 selfloop flow, removed 9 redundant places. [2023-11-29 04:21:55,322 INFO L231 Difference]: Finished difference. Result has 246 places, 319 transitions, 6189 flow [2023-11-29 04:21:55,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4810, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6189, PETRI_PLACES=246, PETRI_TRANSITIONS=319} [2023-11-29 04:21:55,322 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 210 predicate places. [2023-11-29 04:21:55,322 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 319 transitions, 6189 flow [2023-11-29 04:21:55,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:55,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:55,323 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:55,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-11-29 04:21:55,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:21:55,523 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:21:55,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash 446770328, now seen corresponding path program 2 times [2023-11-29 04:21:55,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:21:55,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153361228] [2023-11-29 04:21:55,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:21:55,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:21:55,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:21:55,525 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:21:55,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-11-29 04:21:55,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:21:55,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:21:55,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:21:55,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:21:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:55,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:21:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:55,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:21:55,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153361228] [2023-11-29 04:21:55,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153361228] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:21:55,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:21:55,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 04:21:55,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134399343] [2023-11-29 04:21:55,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:21:55,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:21:55,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:21:55,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:21:55,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:21:55,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:21:55,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 319 transitions, 6189 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:55,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:55,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:21:55,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:22:13,407 INFO L124 PetriNetUnfolderBase]: 24915/46641 cut-off events. [2023-11-29 04:22:13,407 INFO L125 PetriNetUnfolderBase]: For 2181012/2181398 co-relation queries the response was YES. [2023-11-29 04:22:13,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484846 conditions, 46641 events. 24915/46641 cut-off events. For 2181012/2181398 co-relation queries the response was YES. Maximal size of possible extension queue 2052. Compared 457679 event pairs, 1246 based on Foata normal form. 251/46816 useless extension candidates. Maximal degree in co-relation 484729. Up to 19942 conditions per place. [2023-11-29 04:22:14,248 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 875 selfloop transitions, 202 changer transitions 0/1086 dead transitions. [2023-11-29 04:22:14,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1086 transitions, 26317 flow [2023-11-29 04:22:14,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 04:22:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 04:22:14,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 700 transitions. [2023-11-29 04:22:14,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2023-11-29 04:22:14,251 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 700 transitions. [2023-11-29 04:22:14,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 700 transitions. [2023-11-29 04:22:14,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:22:14,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 700 transitions. [2023-11-29 04:22:14,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 21.21212121212121) internal successors, (700), 33 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:22:14,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 35.0) internal successors, (1190), 34 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:22:14,255 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 35.0) internal successors, (1190), 34 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:22:14,255 INFO L175 Difference]: Start difference. First operand has 246 places, 319 transitions, 6189 flow. Second operand 33 states and 700 transitions. [2023-11-29 04:22:14,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1086 transitions, 26317 flow [2023-11-29 04:22:46,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 1086 transitions, 25814 flow, removed 225 selfloop flow, removed 6 redundant places. [2023-11-29 04:22:46,632 INFO L231 Difference]: Finished difference. Result has 294 places, 390 transitions, 8479 flow [2023-11-29 04:22:46,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5741, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=8479, PETRI_PLACES=294, PETRI_TRANSITIONS=390} [2023-11-29 04:22:46,633 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 258 predicate places. [2023-11-29 04:22:46,633 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 390 transitions, 8479 flow [2023-11-29 04:22:46,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:22:46,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:22:46,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:22:46,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-11-29 04:22:46,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:22:46,834 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:22:46,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:22:46,834 INFO L85 PathProgramCache]: Analyzing trace with hash -84139368, now seen corresponding path program 3 times [2023-11-29 04:22:46,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:22:46,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762522059] [2023-11-29 04:22:46,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:22:46,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:22:46,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:22:46,836 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:22:46,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-11-29 04:22:46,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 04:22:46,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:22:46,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:22:46,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:22:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:22:46,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:22:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:22:47,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:22:47,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762522059] [2023-11-29 04:22:47,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762522059] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:22:47,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:22:47,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 04:22:47,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644398366] [2023-11-29 04:22:47,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:22:47,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:22:47,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:22:47,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:22:47,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:22:47,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-29 04:22:47,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 390 transitions, 8479 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:22:47,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:22:47,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-29 04:22:47,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:07,004 INFO L124 PetriNetUnfolderBase]: 26417/49302 cut-off events. [2023-11-29 04:23:07,004 INFO L125 PetriNetUnfolderBase]: For 3085433/3085843 co-relation queries the response was YES. [2023-11-29 04:23:07,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551692 conditions, 49302 events. 26417/49302 cut-off events. For 3085433/3085843 co-relation queries the response was YES. Maximal size of possible extension queue 2121. Compared 484966 event pairs, 1328 based on Foata normal form. 540/49756 useless extension candidates. Maximal degree in co-relation 551552. Up to 21362 conditions per place. [2023-11-29 04:23:08,304 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 803 selfloop transitions, 231 changer transitions 0/1043 dead transitions. [2023-11-29 04:23:08,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 1043 transitions, 26476 flow [2023-11-29 04:23:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 04:23:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 04:23:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 581 transitions. [2023-11-29 04:23:08,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2023-11-29 04:23:08,306 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 581 transitions. [2023-11-29 04:23:08,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 581 transitions. [2023-11-29 04:23:08,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:08,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 581 transitions. [2023-11-29 04:23:08,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 20.75) internal successors, (581), 28 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:08,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 35.0) internal successors, (1015), 29 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:08,310 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 35.0) internal successors, (1015), 29 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:08,310 INFO L175 Difference]: Start difference. First operand has 294 places, 390 transitions, 8479 flow. Second operand 28 states and 581 transitions. [2023-11-29 04:23:08,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 1043 transitions, 26476 flow [2023-11-29 04:24:04,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 1043 transitions, 24895 flow, removed 766 selfloop flow, removed 6 redundant places. [2023-11-29 04:24:04,735 INFO L231 Difference]: Finished difference. Result has 330 places, 449 transitions, 9809 flow [2023-11-29 04:24:04,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7656, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=9809, PETRI_PLACES=330, PETRI_TRANSITIONS=449} [2023-11-29 04:24:04,737 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 294 predicate places. [2023-11-29 04:24:04,737 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 449 transitions, 9809 flow [2023-11-29 04:24:04,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:24:04,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:24:04,737 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:24:04,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2023-11-29 04:24:04,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:24:04,938 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:24:04,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:24:04,938 INFO L85 PathProgramCache]: Analyzing trace with hash -410622792, now seen corresponding path program 2 times [2023-11-29 04:24:04,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:24:04,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534505341] [2023-11-29 04:24:04,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:24:04,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:24:04,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:24:04,940 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:24:04,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-11-29 04:24:05,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:24:05,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:24:05,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:24:05,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:24:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:24:05,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:24:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:24:05,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:24:05,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534505341] [2023-11-29 04:24:05,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534505341] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:24:05,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:24:05,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 04:24:05,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643871459] [2023-11-29 04:24:05,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:24:05,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:24:05,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:24:05,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:24:05,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:24:05,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 04:24:05,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 449 transitions, 9809 flow. Second operand has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:24:05,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:24:05,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 04:24:05,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:24:59,051 INFO L124 PetriNetUnfolderBase]: 54252/116868 cut-off events. [2023-11-29 04:24:59,051 INFO L125 PetriNetUnfolderBase]: For 7386813/7449710 co-relation queries the response was YES. [2023-11-29 04:25:01,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1251963 conditions, 116868 events. 54252/116868 cut-off events. For 7386813/7449710 co-relation queries the response was YES. Maximal size of possible extension queue 3419. Compared 1443974 event pairs, 7485 based on Foata normal form. 21681/135410 useless extension candidates. Maximal degree in co-relation 1251809. Up to 48781 conditions per place. [2023-11-29 04:25:02,909 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 432 selfloop transitions, 60 changer transitions 0/848 dead transitions. [2023-11-29 04:25:02,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 848 transitions, 19447 flow [2023-11-29 04:25:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:25:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 04:25:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 321 transitions. [2023-11-29 04:25:02,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2023-11-29 04:25:02,911 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 321 transitions. [2023-11-29 04:25:02,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 321 transitions. [2023-11-29 04:25:02,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:25:02,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 321 transitions. [2023-11-29 04:25:02,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:25:02,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:25:02,913 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 35.0) internal successors, (455), 13 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:25:02,913 INFO L175 Difference]: Start difference. First operand has 330 places, 449 transitions, 9809 flow. Second operand 12 states and 321 transitions. [2023-11-29 04:25:02,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 848 transitions, 19447 flow [2023-11-29 04:27:17,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 848 transitions, 18642 flow, removed 386 selfloop flow, removed 6 redundant places. [2023-11-29 04:27:17,757 INFO L231 Difference]: Finished difference. Result has 342 places, 480 transitions, 10056 flow [2023-11-29 04:27:17,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=9148, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10056, PETRI_PLACES=342, PETRI_TRANSITIONS=480} [2023-11-29 04:27:17,759 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 306 predicate places. [2023-11-29 04:27:17,759 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 480 transitions, 10056 flow [2023-11-29 04:27:17,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:27:17,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:27:17,759 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:27:17,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2023-11-29 04:27:17,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:27:17,960 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-29 04:27:17,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:27:17,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1475675144, now seen corresponding path program 2 times [2023-11-29 04:27:17,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:27:17,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075009877] [2023-11-29 04:27:17,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:27:17,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:27:17,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:27:17,961 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:27:17,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_733b13dc-d114-446f-9927-f1abb7198e6f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-11-29 04:27:18,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:27:18,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:27:18,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:27:18,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:27:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:27:18,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:27:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:27:18,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:27:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075009877] [2023-11-29 04:27:18,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075009877] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:27:18,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:27:18,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 04:27:18,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669219502] [2023-11-29 04:27:18,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:27:18,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:27:18,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:27:18,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:27:18,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:27:18,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-29 04:27:18,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 480 transitions, 10056 flow. Second operand has 12 states, 12 states have (on average 19.25) internal successors, (231), 12 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:27:18,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:27:18,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-29 04:27:18,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand