./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx --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 69f73d75edf25d106d657bdc186907312ee3ef2bf4e5da547c0ac3641991b71d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:08:30,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:08:30,531 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:08:30,539 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:08:30,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:08:30,601 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:08:30,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:08:30,603 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:08:30,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:08:30,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:08:30,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:08:30,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:08:30,613 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:08:30,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:08:30,631 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:08:30,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:08:30,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:08:30,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:08:30,633 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:08:30,634 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:08:30,634 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:08:30,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:08:30,636 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:08:30,637 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:08:30,638 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:08:30,639 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:08:30,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:08:30,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:08:30,641 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:08:30,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:08:30,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:08:30,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:08:30,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:08:30,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:08:30,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:08:30,645 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:08:30,645 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:08:30,646 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:08:30,646 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:08:30,647 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_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f73d75edf25d106d657bdc186907312ee3ef2bf4e5da547c0ac3641991b71d [2023-11-21 22:08:30,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:08:30,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:08:30,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:08:30,951 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:08:30,952 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:08:30,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2023-11-21 22:08:34,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:08:34,356 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:08:34,357 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/sv-benchmarks/c/weaver/test-easy6.wvr.c [2023-11-21 22:08:34,365 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/data/5a5c904e7/d231892aa8dc46d88af2fab7cab93920/FLAGdcd5fc8a1 [2023-11-21 22:08:34,379 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/data/5a5c904e7/d231892aa8dc46d88af2fab7cab93920 [2023-11-21 22:08:34,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:08:34,383 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:08:34,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:08:34,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:08:34,390 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:08:34,391 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:08:34" (1/1) ... [2023-11-21 22:08:34,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b105330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34, skipping insertion in model container [2023-11-21 22:08:34,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:08:34" (1/1) ... [2023-11-21 22:08:34,423 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:08:34,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:08:34,605 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:08:34,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:08:34,639 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:08:34,639 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:08:34,647 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:08:34,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34 WrapperNode [2023-11-21 22:08:34,648 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:08:34,649 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:08:34,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:08:34,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:08:34,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34" (1/1) ... [2023-11-21 22:08:34,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34" (1/1) ... [2023-11-21 22:08:34,694 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 126 [2023-11-21 22:08:34,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:08:34,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:08:34,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:08:34,696 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:08:34,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34" (1/1) ... [2023-11-21 22:08:34,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34" (1/1) ... [2023-11-21 22:08:34,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34" (1/1) ... [2023-11-21 22:08:34,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34" (1/1) ... [2023-11-21 22:08:34,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34" (1/1) ... [2023-11-21 22:08:34,724 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34" (1/1) ... [2023-11-21 22:08:34,726 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34" (1/1) ... [2023-11-21 22:08:34,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34" (1/1) ... [2023-11-21 22:08:34,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:08:34,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:08:34,738 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:08:34,738 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:08:34,739 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34" (1/1) ... [2023-11-21 22:08:34,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:08:34,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:08:34,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:08:34,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:08:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:08:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 22:08:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 22:08:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 22:08:34,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 22:08:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:08:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:08:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:08:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:08:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:08:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:08:34,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:08:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:08:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:08:34,839 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:08:35,018 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:08:35,020 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:08:35,296 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:08:35,535 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:08:35,535 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:08:35,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:08:35 BoogieIcfgContainer [2023-11-21 22:08:35,538 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:08:35,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:08:35,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:08:35,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:08:35,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:08:34" (1/3) ... [2023-11-21 22:08:35,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793a54d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:08:35, skipping insertion in model container [2023-11-21 22:08:35,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:34" (2/3) ... [2023-11-21 22:08:35,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793a54d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:08:35, skipping insertion in model container [2023-11-21 22:08:35,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:08:35" (3/3) ... [2023-11-21 22:08:35,551 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-11-21 22:08:35,567 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:08:35,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-21 22:08:35,567 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:08:35,646 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 22:08:35,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 49 transitions, 112 flow [2023-11-21 22:08:35,757 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2023-11-21 22:08:35,757 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:08:35,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 0/47 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-21 22:08:35,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 49 transitions, 112 flow [2023-11-21 22:08:35,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 46 transitions, 104 flow [2023-11-21 22:08:35,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:08:35,797 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;@6af8cc89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:08:35,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-21 22:08:35,804 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:08:35,804 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:08:35,805 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:08:35,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:35,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:08:35,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:08:35,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:35,815 INFO L85 PathProgramCache]: Analyzing trace with hash 8728, now seen corresponding path program 1 times [2023-11-21 22:08:35,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:35,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8649320] [2023-11-21 22:08:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:35,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:36,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8649320] [2023-11-21 22:08:36,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8649320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:36,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:36,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:08:36,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522409508] [2023-11-21 22:08:36,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:36,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:36,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:36,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:36,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:36,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 49 [2023-11-21 22:08:36,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:36,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:36,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 49 [2023-11-21 22:08:36,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:36,398 INFO L124 PetriNetUnfolderBase]: 66/233 cut-off events. [2023-11-21 22:08:36,398 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-21 22:08:36,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 233 events. 66/233 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1049 event pairs, 66 based on Foata normal form. 1/207 useless extension candidates. Maximal degree in co-relation 329. Up to 130 conditions per place. [2023-11-21 22:08:36,411 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 15 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-11-21 22:08:36,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 128 flow [2023-11-21 22:08:36,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:36,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2023-11-21 22:08:36,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7210884353741497 [2023-11-21 22:08:36,428 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 106 transitions. [2023-11-21 22:08:36,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 106 transitions. [2023-11-21 22:08:36,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:36,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 106 transitions. [2023-11-21 22:08:36,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:36,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2023-11-21 22:08:36,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2023-11-21 22:08:36,442 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 104 flow. Second operand 3 states and 106 transitions. [2023-11-21 22:08:36,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 128 flow [2023-11-21 22:08:36,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 120 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:08:36,448 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 90 flow [2023-11-21 22:08:36,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-11-21 22:08:36,455 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2023-11-21 22:08:36,455 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 90 flow [2023-11-21 22:08:36,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:36,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:36,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:08:36,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:08:36,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:08:36,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:36,457 INFO L85 PathProgramCache]: Analyzing trace with hash 8729, now seen corresponding path program 1 times [2023-11-21 22:08:36,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:36,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115843165] [2023-11-21 22:08:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:36,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:36,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:36,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115843165] [2023-11-21 22:08:36,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115843165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:36,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:36,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:08:36,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868904010] [2023-11-21 22:08:36,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:36,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:36,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:36,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:36,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:36,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 49 [2023-11-21 22:08:36,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:36,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:36,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 49 [2023-11-21 22:08:36,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:36,767 INFO L124 PetriNetUnfolderBase]: 42/174 cut-off events. [2023-11-21 22:08:36,768 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-21 22:08:36,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 174 events. 42/174 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 705 event pairs, 42 based on Foata normal form. 17/169 useless extension candidates. Maximal degree in co-relation 266. Up to 89 conditions per place. [2023-11-21 22:08:36,771 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 13 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-11-21 22:08:36,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 114 flow [2023-11-21 22:08:36,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2023-11-21 22:08:36,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7414965986394558 [2023-11-21 22:08:36,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 109 transitions. [2023-11-21 22:08:36,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 109 transitions. [2023-11-21 22:08:36,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:36,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 109 transitions. [2023-11-21 22:08:36,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:36,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2023-11-21 22:08:36,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2023-11-21 22:08:36,779 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 90 flow. Second operand 3 states and 109 transitions. [2023-11-21 22:08:36,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 114 flow [2023-11-21 22:08:36,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 40 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:08:36,782 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 87 flow [2023-11-21 22:08:36,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-11-21 22:08:36,783 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2023-11-21 22:08:36,784 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 87 flow [2023-11-21 22:08:36,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:36,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:36,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:08:36,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:08:36,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:08:36,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:36,786 INFO L85 PathProgramCache]: Analyzing trace with hash 260273947, now seen corresponding path program 1 times [2023-11-21 22:08:36,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:36,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932165233] [2023-11-21 22:08:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:36,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:36,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:36,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:36,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932165233] [2023-11-21 22:08:36,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932165233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:36,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:36,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:08:36,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970930365] [2023-11-21 22:08:36,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:36,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:36,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:36,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:36,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:36,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 49 [2023-11-21 22:08:36,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:36,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:36,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 49 [2023-11-21 22:08:36,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:36,947 INFO L124 PetriNetUnfolderBase]: 48/179 cut-off events. [2023-11-21 22:08:36,947 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:08:36,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 179 events. 48/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 714 event pairs, 48 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 285. Up to 103 conditions per place. [2023-11-21 22:08:36,950 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 15 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-11-21 22:08:36,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 115 flow [2023-11-21 22:08:36,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:36,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:36,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2023-11-21 22:08:36,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-21 22:08:36,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 105 transitions. [2023-11-21 22:08:36,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 105 transitions. [2023-11-21 22:08:36,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:36,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 105 transitions. [2023-11-21 22:08:36,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:36,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2023-11-21 22:08:36,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2023-11-21 22:08:36,957 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 87 flow. Second operand 3 states and 105 transitions. [2023-11-21 22:08:36,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 115 flow [2023-11-21 22:08:36,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:08:36,960 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 84 flow [2023-11-21 22:08:36,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-11-21 22:08:36,961 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -8 predicate places. [2023-11-21 22:08:36,961 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 84 flow [2023-11-21 22:08:36,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:36,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:36,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:08:36,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:08:36,962 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:08:36,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:36,963 INFO L85 PathProgramCache]: Analyzing trace with hash 260273948, now seen corresponding path program 1 times [2023-11-21 22:08:36,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:36,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836400030] [2023-11-21 22:08:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:36,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:37,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:37,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836400030] [2023-11-21 22:08:37,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836400030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:37,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:37,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:08:37,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802643292] [2023-11-21 22:08:37,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:37,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:37,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:37,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:37,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:37,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 49 [2023-11-21 22:08:37,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:37,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:37,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 49 [2023-11-21 22:08:37,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:37,134 INFO L124 PetriNetUnfolderBase]: 42/162 cut-off events. [2023-11-21 22:08:37,134 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-21 22:08:37,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 162 events. 42/162 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 639 event pairs, 42 based on Foata normal form. 8/160 useless extension candidates. Maximal degree in co-relation 254. Up to 89 conditions per place. [2023-11-21 22:08:37,138 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 13 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-11-21 22:08:37,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 108 flow [2023-11-21 22:08:37,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:37,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2023-11-21 22:08:37,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7414965986394558 [2023-11-21 22:08:37,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 109 transitions. [2023-11-21 22:08:37,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 109 transitions. [2023-11-21 22:08:37,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:37,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 109 transitions. [2023-11-21 22:08:37,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:37,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2023-11-21 22:08:37,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2023-11-21 22:08:37,150 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 84 flow. Second operand 3 states and 109 transitions. [2023-11-21 22:08:37,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 108 flow [2023-11-21 22:08:37,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:08:37,154 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 81 flow [2023-11-21 22:08:37,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-11-21 22:08:37,157 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-11-21 22:08:37,157 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 81 flow [2023-11-21 22:08:37,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:37,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:37,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:37,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:08:37,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:08:37,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:37,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1890658547, now seen corresponding path program 1 times [2023-11-21 22:08:37,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:37,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383898964] [2023-11-21 22:08:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:37,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:37,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:37,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383898964] [2023-11-21 22:08:37,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383898964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:37,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:37,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:08:37,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540034698] [2023-11-21 22:08:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:37,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:08:37,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:37,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:08:37,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:08:37,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 49 [2023-11-21 22:08:37,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 81 flow. Second operand has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:37,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:37,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 49 [2023-11-21 22:08:37,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:37,701 INFO L124 PetriNetUnfolderBase]: 124/338 cut-off events. [2023-11-21 22:08:37,702 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-21 22:08:37,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 338 events. 124/338 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1620 event pairs, 39 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 604. Up to 80 conditions per place. [2023-11-21 22:08:37,708 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 31 selfloop transitions, 6 changer transitions 14/69 dead transitions. [2023-11-21 22:08:37,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 257 flow [2023-11-21 22:08:37,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:08:37,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:08:37,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2023-11-21 22:08:37,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7434402332361516 [2023-11-21 22:08:37,718 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 255 transitions. [2023-11-21 22:08:37,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 255 transitions. [2023-11-21 22:08:37,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:37,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 255 transitions. [2023-11-21 22:08:37,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.42857142857143) internal successors, (255), 7 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) [2023-11-21 22:08:37,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:37,722 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:37,722 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 81 flow. Second operand 7 states and 255 transitions. [2023-11-21 22:08:37,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 257 flow [2023-11-21 22:08:37,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:08:37,725 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 115 flow [2023-11-21 22:08:37,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=115, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-11-21 22:08:37,729 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2023-11-21 22:08:37,730 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 115 flow [2023-11-21 22:08:37,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:37,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:37,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:37,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:08:37,732 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:08:37,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:37,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1207324809, now seen corresponding path program 2 times [2023-11-21 22:08:37,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:37,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085357487] [2023-11-21 22:08:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:37,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:38,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:38,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085357487] [2023-11-21 22:08:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085357487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:38,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:38,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:08:38,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91478048] [2023-11-21 22:08:38,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:38,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:08:38,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:38,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:08:38,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:08:38,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 49 [2023-11-21 22:08:38,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 115 flow. Second operand has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:38,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:38,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 49 [2023-11-21 22:08:38,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:38,388 INFO L124 PetriNetUnfolderBase]: 307/774 cut-off events. [2023-11-21 22:08:38,388 INFO L125 PetriNetUnfolderBase]: For 55/59 co-relation queries the response was YES. [2023-11-21 22:08:38,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 774 events. 307/774 cut-off events. For 55/59 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4384 event pairs, 51 based on Foata normal form. 8/771 useless extension candidates. Maximal degree in co-relation 1486. Up to 143 conditions per place. [2023-11-21 22:08:38,395 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 44 selfloop transitions, 11 changer transitions 13/88 dead transitions. [2023-11-21 22:08:38,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 354 flow [2023-11-21 22:08:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:08:38,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 22:08:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 312 transitions. [2023-11-21 22:08:38,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7074829931972789 [2023-11-21 22:08:38,399 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 312 transitions. [2023-11-21 22:08:38,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 312 transitions. [2023-11-21 22:08:38,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:38,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 312 transitions. [2023-11-21 22:08:38,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 34.666666666666664) internal successors, (312), 9 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:38,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:38,404 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:38,404 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 115 flow. Second operand 9 states and 312 transitions. [2023-11-21 22:08:38,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 354 flow [2023-11-21 22:08:38,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 88 transitions, 350 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-21 22:08:38,412 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 187 flow [2023-11-21 22:08:38,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=187, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2023-11-21 22:08:38,413 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-11-21 22:08:38,414 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 187 flow [2023-11-21 22:08:38,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:38,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:38,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:38,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:08:38,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:08:38,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:38,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1183686383, now seen corresponding path program 3 times [2023-11-21 22:08:38,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:38,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074917623] [2023-11-21 22:08:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:38,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:38,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:38,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074917623] [2023-11-21 22:08:38,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074917623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:38,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:38,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:08:38,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259233456] [2023-11-21 22:08:38,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:38,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:38,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:38,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:38,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 49 [2023-11-21 22:08:38,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:38,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:38,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 49 [2023-11-21 22:08:38,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:38,693 INFO L124 PetriNetUnfolderBase]: 164/586 cut-off events. [2023-11-21 22:08:38,693 INFO L125 PetriNetUnfolderBase]: For 214/218 co-relation queries the response was YES. [2023-11-21 22:08:38,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1284 conditions, 586 events. 164/586 cut-off events. For 214/218 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3538 event pairs, 117 based on Foata normal form. 9/571 useless extension candidates. Maximal degree in co-relation 1264. Up to 300 conditions per place. [2023-11-21 22:08:38,699 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 19 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-21 22:08:38,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 242 flow [2023-11-21 22:08:38,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:38,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-21 22:08:38,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.782312925170068 [2023-11-21 22:08:38,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-21 22:08:38,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-21 22:08:38,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:38,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-21 22:08:38,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:38,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2023-11-21 22:08:38,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2023-11-21 22:08:38,704 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 187 flow. Second operand 3 states and 115 transitions. [2023-11-21 22:08:38,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 242 flow [2023-11-21 22:08:38,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 240 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-21 22:08:38,712 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 193 flow [2023-11-21 22:08:38,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2023-11-21 22:08:38,713 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-11-21 22:08:38,713 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 193 flow [2023-11-21 22:08:38,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:38,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:38,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:38,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:08:38,714 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:08:38,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:38,715 INFO L85 PathProgramCache]: Analyzing trace with hash 398341711, now seen corresponding path program 4 times [2023-11-21 22:08:38,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:38,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782555595] [2023-11-21 22:08:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:38,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:38,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:38,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782555595] [2023-11-21 22:08:38,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782555595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:38,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:38,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:08:38,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075420859] [2023-11-21 22:08:38,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:38,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:08:38,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:38,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:08:38,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:08:38,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 49 [2023-11-21 22:08:38,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:38,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:38,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 49 [2023-11-21 22:08:38,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:39,213 INFO L124 PetriNetUnfolderBase]: 247/647 cut-off events. [2023-11-21 22:08:39,213 INFO L125 PetriNetUnfolderBase]: For 270/277 co-relation queries the response was YES. [2023-11-21 22:08:39,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 647 events. 247/647 cut-off events. For 270/277 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3618 event pairs, 90 based on Foata normal form. 8/634 useless extension candidates. Maximal degree in co-relation 1533. Up to 159 conditions per place. [2023-11-21 22:08:39,219 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 22 selfloop transitions, 5 changer transitions 15/68 dead transitions. [2023-11-21 22:08:39,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 326 flow [2023-11-21 22:08:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:08:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:08:39,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 246 transitions. [2023-11-21 22:08:39,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.717201166180758 [2023-11-21 22:08:39,221 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 246 transitions. [2023-11-21 22:08:39,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 246 transitions. [2023-11-21 22:08:39,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:39,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 246 transitions. [2023-11-21 22:08:39,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 35.142857142857146) internal successors, (246), 7 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:39,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:39,224 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:39,224 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 193 flow. Second operand 7 states and 246 transitions. [2023-11-21 22:08:39,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 326 flow [2023-11-21 22:08:39,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:39,248 INFO L231 Difference]: Finished difference. Result has 68 places, 46 transitions, 192 flow [2023-11-21 22:08:39,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=192, PETRI_PLACES=68, PETRI_TRANSITIONS=46} [2023-11-21 22:08:39,250 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2023-11-21 22:08:39,251 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 46 transitions, 192 flow [2023-11-21 22:08:39,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:39,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:39,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:39,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:08:39,252 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:08:39,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:39,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1131677463, now seen corresponding path program 5 times [2023-11-21 22:08:39,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:39,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244870544] [2023-11-21 22:08:39,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:39,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:39,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:39,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244870544] [2023-11-21 22:08:39,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244870544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:39,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:39,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:08:39,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22322480] [2023-11-21 22:08:39,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:39,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:08:39,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:39,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:08:39,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:08:39,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 49 [2023-11-21 22:08:39,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 46 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:39,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:39,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 49 [2023-11-21 22:08:39,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:39,754 INFO L124 PetriNetUnfolderBase]: 260/691 cut-off events. [2023-11-21 22:08:39,754 INFO L125 PetriNetUnfolderBase]: For 513/536 co-relation queries the response was YES. [2023-11-21 22:08:39,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 691 events. 260/691 cut-off events. For 513/536 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3791 event pairs, 70 based on Foata normal form. 22/698 useless extension candidates. Maximal degree in co-relation 1707. Up to 196 conditions per place. [2023-11-21 22:08:39,760 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 39 selfloop transitions, 7 changer transitions 13/77 dead transitions. [2023-11-21 22:08:39,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 77 transitions, 402 flow [2023-11-21 22:08:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:08:39,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:08:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 221 transitions. [2023-11-21 22:08:39,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7517006802721088 [2023-11-21 22:08:39,762 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 221 transitions. [2023-11-21 22:08:39,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 221 transitions. [2023-11-21 22:08:39,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:39,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 221 transitions. [2023-11-21 22:08:39,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:39,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:39,766 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:39,766 INFO L175 Difference]: Start difference. First operand has 68 places, 46 transitions, 192 flow. Second operand 6 states and 221 transitions. [2023-11-21 22:08:39,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 77 transitions, 402 flow [2023-11-21 22:08:39,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 385 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-21 22:08:39,772 INFO L231 Difference]: Finished difference. Result has 66 places, 44 transitions, 183 flow [2023-11-21 22:08:39,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=66, PETRI_TRANSITIONS=44} [2023-11-21 22:08:39,774 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2023-11-21 22:08:39,774 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 44 transitions, 183 flow [2023-11-21 22:08:39,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:39,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:39,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:39,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:08:39,775 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:08:39,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:39,776 INFO L85 PathProgramCache]: Analyzing trace with hash 315699359, now seen corresponding path program 6 times [2023-11-21 22:08:39,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:39,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600601661] [2023-11-21 22:08:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:39,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:39,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:39,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600601661] [2023-11-21 22:08:39,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600601661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:39,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:39,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:08:39,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625606425] [2023-11-21 22:08:39,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:39,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:08:39,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:39,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:08:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:08:40,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 49 [2023-11-21 22:08:40,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 44 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:40,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 49 [2023-11-21 22:08:40,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:40,186 INFO L124 PetriNetUnfolderBase]: 139/379 cut-off events. [2023-11-21 22:08:40,187 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2023-11-21 22:08:40,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 379 events. 139/379 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1718 event pairs, 55 based on Foata normal form. 6/374 useless extension candidates. Maximal degree in co-relation 946. Up to 196 conditions per place. [2023-11-21 22:08:40,190 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 21 selfloop transitions, 3 changer transitions 11/53 dead transitions. [2023-11-21 22:08:40,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 53 transitions, 270 flow [2023-11-21 22:08:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:08:40,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:08:40,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2023-11-21 22:08:40,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6979591836734694 [2023-11-21 22:08:40,193 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 171 transitions. [2023-11-21 22:08:40,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 171 transitions. [2023-11-21 22:08:40,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:40,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 171 transitions. [2023-11-21 22:08:40,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,197 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,197 INFO L175 Difference]: Start difference. First operand has 66 places, 44 transitions, 183 flow. Second operand 5 states and 171 transitions. [2023-11-21 22:08:40,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 53 transitions, 270 flow [2023-11-21 22:08:40,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 247 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-21 22:08:40,201 INFO L231 Difference]: Finished difference. Result has 62 places, 38 transitions, 135 flow [2023-11-21 22:08:40,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=62, PETRI_TRANSITIONS=38} [2023-11-21 22:08:40,203 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2023-11-21 22:08:40,203 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 38 transitions, 135 flow [2023-11-21 22:08:40,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:40,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:40,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:08:40,205 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:08:40,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:40,206 INFO L85 PathProgramCache]: Analyzing trace with hash -247086807, now seen corresponding path program 7 times [2023-11-21 22:08:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:40,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526178133] [2023-11-21 22:08:40,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:40,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:40,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:40,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526178133] [2023-11-21 22:08:40,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526178133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:40,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:40,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:08:40,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121994657] [2023-11-21 22:08:40,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:40,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:08:40,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:40,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:08:40,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:08:40,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 49 [2023-11-21 22:08:40,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 38 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:40,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 49 [2023-11-21 22:08:40,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:40,567 INFO L124 PetriNetUnfolderBase]: 41/110 cut-off events. [2023-11-21 22:08:40,568 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-21 22:08:40,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 110 events. 41/110 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 301 event pairs, 5 based on Foata normal form. 6/113 useless extension candidates. Maximal degree in co-relation 288. Up to 28 conditions per place. [2023-11-21 22:08:40,569 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-11-21 22:08:40,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 37 transitions, 182 flow [2023-11-21 22:08:40,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:08:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:08:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2023-11-21 22:08:40,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6297376093294461 [2023-11-21 22:08:40,571 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 216 transitions. [2023-11-21 22:08:40,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 216 transitions. [2023-11-21 22:08:40,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:40,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 216 transitions. [2023-11-21 22:08:40,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 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) [2023-11-21 22:08:40,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,574 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,575 INFO L175 Difference]: Start difference. First operand has 62 places, 38 transitions, 135 flow. Second operand 7 states and 216 transitions. [2023-11-21 22:08:40,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 37 transitions, 182 flow [2023-11-21 22:08:40,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 37 transitions, 147 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-11-21 22:08:40,576 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-11-21 22:08:40,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-11-21 22:08:40,577 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -8 predicate places. [2023-11-21 22:08:40,577 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-11-21 22:08:40,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,581 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-21 22:08:40,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-21 22:08:40,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-21 22:08:40,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-21 22:08:40,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-21 22:08:40,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-21 22:08:40,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-21 22:08:40,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-21 22:08:40,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-21 22:08:40,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-21 22:08:40,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-21 22:08:40,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-21 22:08:40,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:08:40,585 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1] [2023-11-21 22:08:40,592 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:08:40,592 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:08:40,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:08:40 BasicIcfg [2023-11-21 22:08:40,606 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:08:40,607 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:08:40,607 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:08:40,607 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:08:40,608 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:08:35" (3/4) ... [2023-11-21 22:08:40,610 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:08:40,615 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-21 22:08:40,615 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-21 22:08:40,625 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2023-11-21 22:08:40,625 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-21 22:08:40,626 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-21 22:08:40,626 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 22:08:40,768 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:08:40,771 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:08:40,772 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:08:40,772 INFO L158 Benchmark]: Toolchain (without parser) took 6389.30ms. Allocated memory was 136.3MB in the beginning and 237.0MB in the end (delta: 100.7MB). Free memory was 91.8MB in the beginning and 151.4MB in the end (delta: -59.6MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2023-11-21 22:08:40,773 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 136.3MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:08:40,773 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.07ms. Allocated memory is still 136.3MB. Free memory was 91.8MB in the beginning and 80.2MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 22:08:40,774 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.17ms. Allocated memory is still 136.3MB. Free memory was 80.2MB in the beginning and 78.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:08:40,774 INFO L158 Benchmark]: Boogie Preprocessor took 41.48ms. Allocated memory is still 136.3MB. Free memory was 78.6MB in the beginning and 77.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:08:40,774 INFO L158 Benchmark]: RCFGBuilder took 800.14ms. Allocated memory is still 136.3MB. Free memory was 77.1MB in the beginning and 51.3MB in the end (delta: 25.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-21 22:08:40,775 INFO L158 Benchmark]: TraceAbstraction took 5065.26ms. Allocated memory was 136.3MB in the beginning and 237.0MB in the end (delta: 100.7MB). Free memory was 50.8MB in the beginning and 155.6MB in the end (delta: -104.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:08:40,775 INFO L158 Benchmark]: Witness Printer took 164.88ms. Allocated memory is still 237.0MB. Free memory was 155.6MB in the beginning and 151.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:08:40,777 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 136.3MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.07ms. Allocated memory is still 136.3MB. Free memory was 91.8MB in the beginning and 80.2MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.17ms. Allocated memory is still 136.3MB. Free memory was 80.2MB in the beginning and 78.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.48ms. Allocated memory is still 136.3MB. Free memory was 78.6MB in the beginning and 77.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 800.14ms. Allocated memory is still 136.3MB. Free memory was 77.1MB in the beginning and 51.3MB in the end (delta: 25.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5065.26ms. Allocated memory was 136.3MB in the beginning and 237.0MB in the end (delta: 100.7MB). Free memory was 50.8MB in the beginning and 155.6MB in the end (delta: -104.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 164.88ms. Allocated memory is still 237.0MB. Free memory was 155.6MB in the beginning and 151.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 106]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 76 locations, 12 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: 4.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 500 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 414 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1014 IncrementalHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 38 mSDtfsCounter, 1014 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=7, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 873 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-21 22:08:40,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b50f14c-1e46-4855-8c5e-f0381a798531/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE