./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/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_d88f389f-a11d-4e52-94d9-1ea643ae1548/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/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_d88f389f-a11d-4e52-94d9-1ea643ae1548/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 6a1fdac91c77d25a0ff7a4081206e72776b2070a8df670f4d024b55d140add18 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:23:39,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:23:39,438 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:23:39,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:23:39,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:23:39,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:23:39,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:23:39,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:23:39,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:23:39,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:23:39,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:23:39,478 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:23:39,479 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:23:39,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:23:39,480 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:23:39,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:23:39,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:23:39,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:23:39,483 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:23:39,484 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:23:39,485 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:23:39,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:23:39,486 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:23:39,487 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:23:39,487 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:23:39,488 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:23:39,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:23:39,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:23:39,489 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:23:39,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:23:39,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:23:39,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:23:39,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:23:39,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:23:39,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:23:39,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:23:39,494 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:23:39,495 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:23:39,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:23:39,496 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_d88f389f-a11d-4e52-94d9-1ea643ae1548/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a1fdac91c77d25a0ff7a4081206e72776b2070a8df670f4d024b55d140add18 [2023-11-21 22:23:39,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:23:39,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:23:39,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:23:39,865 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:23:39,865 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:23:39,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2023-11-21 22:23:42,995 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:23:43,197 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:23:43,197 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2023-11-21 22:23:43,207 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/bin/uautomizer-verify-bycVGegfSx/data/6143475e6/cc6aa1dcb8be4e169381b6d6f703baf2/FLAG8fe7f8d10 [2023-11-21 22:23:43,224 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/bin/uautomizer-verify-bycVGegfSx/data/6143475e6/cc6aa1dcb8be4e169381b6d6f703baf2 [2023-11-21 22:23:43,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:23:43,234 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:23:43,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:23:43,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:23:43,244 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:23:43,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:23:43" (1/1) ... [2023-11-21 22:23:43,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272fc3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43, skipping insertion in model container [2023-11-21 22:23:43,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:23:43" (1/1) ... [2023-11-21 22:23:43,283 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:23:43,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:23:43,549 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:23:43,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:23:43,585 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:23:43,585 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:23:43,593 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:23:43,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43 WrapperNode [2023-11-21 22:23:43,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:23:43,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:23:43,595 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:23:43,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:23:43,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43" (1/1) ... [2023-11-21 22:23:43,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43" (1/1) ... [2023-11-21 22:23:43,649 INFO L138 Inliner]: procedures = 22, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 169 [2023-11-21 22:23:43,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:23:43,650 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:23:43,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:23:43,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:23:43,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43" (1/1) ... [2023-11-21 22:23:43,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43" (1/1) ... [2023-11-21 22:23:43,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43" (1/1) ... [2023-11-21 22:23:43,663 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43" (1/1) ... [2023-11-21 22:23:43,672 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43" (1/1) ... [2023-11-21 22:23:43,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43" (1/1) ... [2023-11-21 22:23:43,676 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43" (1/1) ... [2023-11-21 22:23:43,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43" (1/1) ... [2023-11-21 22:23:43,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:23:43,682 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:23:43,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:23:43,682 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:23:43,683 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43" (1/1) ... [2023-11-21 22:23:43,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:23:43,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:23:43,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:23:43,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:23:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:23:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 22:23:43,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 22:23:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 22:23:43,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 22:23:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-21 22:23:43,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-21 22:23:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:23:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:23:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:23:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:23:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:23:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:23:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:23:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:23:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:23:43,766 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 22:23:43,870 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:23:43,872 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:23:44,237 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:23:44,635 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:23:44,635 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:23:44,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:23:44 BoogieIcfgContainer [2023-11-21 22:23:44,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:23:44,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:23:44,643 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:23:44,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:23:44,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:23:43" (1/3) ... [2023-11-21 22:23:44,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a42bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:23:44, skipping insertion in model container [2023-11-21 22:23:44,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:23:43" (2/3) ... [2023-11-21 22:23:44,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a42bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:23:44, skipping insertion in model container [2023-11-21 22:23:44,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:23:44" (3/3) ... [2023-11-21 22:23:44,651 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2023-11-21 22:23:44,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:23:44,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-21 22:23:44,675 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:23:44,750 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-21 22:23:44,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 57 transitions, 135 flow [2023-11-21 22:23:44,825 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2023-11-21 22:23:44,826 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-21 22:23:44,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 0/54 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 103 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-21 22:23:44,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 57 transitions, 135 flow [2023-11-21 22:23:44,833 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 53 transitions, 124 flow [2023-11-21 22:23:44,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:23:44,852 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;@38454678, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:23:44,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-21 22:23:44,856 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:23:44,857 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:23:44,857 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:23:44,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:44,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:23:44,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:44,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:44,864 INFO L85 PathProgramCache]: Analyzing trace with hash 12008, now seen corresponding path program 1 times [2023-11-21 22:23:44,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:44,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212451000] [2023-11-21 22:23:44,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:44,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:45,389 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 22:23:45,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:45,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212451000] [2023-11-21 22:23:45,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212451000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:45,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:45,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:23:45,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993793741] [2023-11-21 22:23:45,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:45,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:23:45,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:45,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:23:45,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:23:45,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-21 22:23:45,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 22:23:45,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:45,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-21 22:23:45,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:45,833 INFO L124 PetriNetUnfolderBase]: 908/1679 cut-off events. [2023-11-21 22:23:45,833 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-11-21 22:23:45,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 1679 events. 908/1679 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9607 event pairs, 908 based on Foata normal form. 1/1586 useless extension candidates. Maximal degree in co-relation 2836. Up to 1377 conditions per place. [2023-11-21 22:23:45,861 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 24 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-11-21 22:23:45,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 166 flow [2023-11-21 22:23:45,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:23:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:23:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-21 22:23:45,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6549707602339181 [2023-11-21 22:23:45,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-21 22:23:45,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-21 22:23:45,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:45,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-21 22:23:45,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 22:23:45,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:23:45,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:23:45,895 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 124 flow. Second operand 3 states and 112 transitions. [2023-11-21 22:23:45,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 166 flow [2023-11-21 22:23:45,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 154 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-21 22:23:45,911 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 106 flow [2023-11-21 22:23:45,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2023-11-21 22:23:45,917 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-11-21 22:23:45,918 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 106 flow [2023-11-21 22:23:45,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 22:23:45,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:45,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:23:45,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:23:45,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:45,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:45,920 INFO L85 PathProgramCache]: Analyzing trace with hash 12009, now seen corresponding path program 1 times [2023-11-21 22:23:45,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:45,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767413932] [2023-11-21 22:23:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:45,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:46,174 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 22:23:46,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767413932] [2023-11-21 22:23:46,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767413932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:46,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:46,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:23:46,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504464902] [2023-11-21 22:23:46,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:46,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:23:46,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:23:46,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:23:46,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 57 [2023-11-21 22:23:46,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 22:23:46,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:46,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 57 [2023-11-21 22:23:46,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:46,483 INFO L124 PetriNetUnfolderBase]: 608/1154 cut-off events. [2023-11-21 22:23:46,484 INFO L125 PetriNetUnfolderBase]: For 30/33 co-relation queries the response was YES. [2023-11-21 22:23:46,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2140 conditions, 1154 events. 608/1154 cut-off events. For 30/33 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6359 event pairs, 608 based on Foata normal form. 126/1225 useless extension candidates. Maximal degree in co-relation 2134. Up to 951 conditions per place. [2023-11-21 22:23:46,496 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 22 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-11-21 22:23:46,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 148 flow [2023-11-21 22:23:46,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:23:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:23:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-21 22:23:46,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.672514619883041 [2023-11-21 22:23:46,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-21 22:23:46,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-21 22:23:46,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:46,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-21 22:23:46,508 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 22:23:46,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:23:46,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:23:46,510 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 106 flow. Second operand 3 states and 115 transitions. [2023-11-21 22:23:46,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 148 flow [2023-11-21 22:23:46,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:23:46,514 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 103 flow [2023-11-21 22:23:46,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-11-21 22:23:46,516 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -9 predicate places. [2023-11-21 22:23:46,516 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 103 flow [2023-11-21 22:23:46,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 22:23:46,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:46,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:23:46,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:23:46,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:46,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:46,524 INFO L85 PathProgramCache]: Analyzing trace with hash 358092804, now seen corresponding path program 1 times [2023-11-21 22:23:46,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:46,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908482391] [2023-11-21 22:23:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:46,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:46,610 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 22:23:46,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:46,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908482391] [2023-11-21 22:23:46,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908482391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:46,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:46,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:23:46,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466015937] [2023-11-21 22:23:46,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:46,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:23:46,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:46,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:23:46,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:23:46,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-21 22:23:46,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:46,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:46,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-21 22:23:46,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:46,860 INFO L124 PetriNetUnfolderBase]: 652/1224 cut-off events. [2023-11-21 22:23:46,860 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-21 22:23:46,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2285 conditions, 1224 events. 652/1224 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6676 event pairs, 652 based on Foata normal form. 0/1180 useless extension candidates. Maximal degree in co-relation 2278. Up to 1025 conditions per place. [2023-11-21 22:23:46,873 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 24 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-21 22:23:46,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 149 flow [2023-11-21 22:23:46,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:23:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:23:46,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2023-11-21 22:23:46,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6491228070175439 [2023-11-21 22:23:46,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 111 transitions. [2023-11-21 22:23:46,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 111 transitions. [2023-11-21 22:23:46,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:46,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 111 transitions. [2023-11-21 22:23:46,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 22:23:46,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:23:46,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:23:46,885 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 103 flow. Second operand 3 states and 111 transitions. [2023-11-21 22:23:46,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 149 flow [2023-11-21 22:23:46,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:23:46,888 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 100 flow [2023-11-21 22:23:46,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-11-21 22:23:46,890 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -10 predicate places. [2023-11-21 22:23:46,891 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 100 flow [2023-11-21 22:23:46,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:46,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:46,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:23:46,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:23:46,892 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:46,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:46,893 INFO L85 PathProgramCache]: Analyzing trace with hash 358092805, now seen corresponding path program 1 times [2023-11-21 22:23:46,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:46,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854026023] [2023-11-21 22:23:46,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:46,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:47,021 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 22:23:47,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:47,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854026023] [2023-11-21 22:23:47,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854026023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:47,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:47,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:23:47,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43322350] [2023-11-21 22:23:47,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:47,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:23:47,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:47,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:23:47,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:23:47,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 57 [2023-11-21 22:23:47,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 22:23:47,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:47,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 57 [2023-11-21 22:23:47,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:47,238 INFO L124 PetriNetUnfolderBase]: 608/1134 cut-off events. [2023-11-21 22:23:47,239 INFO L125 PetriNetUnfolderBase]: For 30/33 co-relation queries the response was YES. [2023-11-21 22:23:47,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 1134 events. 608/1134 cut-off events. For 30/33 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6142 event pairs, 608 based on Foata normal form. 24/1123 useless extension candidates. Maximal degree in co-relation 2114. Up to 951 conditions per place. [2023-11-21 22:23:47,250 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 22 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-11-21 22:23:47,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 142 flow [2023-11-21 22:23:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:23:47,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:23:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-21 22:23:47,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.672514619883041 [2023-11-21 22:23:47,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-21 22:23:47,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-21 22:23:47,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:47,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-21 22:23:47,255 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 22:23:47,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:23:47,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:23:47,259 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 100 flow. Second operand 3 states and 115 transitions. [2023-11-21 22:23:47,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 142 flow [2023-11-21 22:23:47,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:23:47,261 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 97 flow [2023-11-21 22:23:47,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-21 22:23:47,264 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -11 predicate places. [2023-11-21 22:23:47,265 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 97 flow [2023-11-21 22:23:47,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 22:23:47,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:47,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:23:47,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:23:47,266 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:47,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:47,267 INFO L85 PathProgramCache]: Analyzing trace with hash -755673256, now seen corresponding path program 1 times [2023-11-21 22:23:47,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:47,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954977331] [2023-11-21 22:23:47,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:47,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:47,352 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 22:23:47,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:47,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954977331] [2023-11-21 22:23:47,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954977331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:47,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:23:47,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453493140] [2023-11-21 22:23:47,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:47,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:23:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:23:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:23:47,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-21 22:23:47,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:23:47,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:47,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-21 22:23:47,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:47,550 INFO L124 PetriNetUnfolderBase]: 652/1193 cut-off events. [2023-11-21 22:23:47,550 INFO L125 PetriNetUnfolderBase]: For 30/33 co-relation queries the response was YES. [2023-11-21 22:23:47,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 1193 events. 652/1193 cut-off events. For 30/33 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6400 event pairs, 652 based on Foata normal form. 0/1176 useless extension candidates. Maximal degree in co-relation 2247. Up to 1025 conditions per place. [2023-11-21 22:23:47,562 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 24 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-11-21 22:23:47,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 41 transitions, 143 flow [2023-11-21 22:23:47,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:23:47,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:23:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2023-11-21 22:23:47,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6491228070175439 [2023-11-21 22:23:47,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 111 transitions. [2023-11-21 22:23:47,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 111 transitions. [2023-11-21 22:23:47,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:47,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 111 transitions. [2023-11-21 22:23:47,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 22:23:47,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:23:47,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:23:47,570 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 97 flow. Second operand 3 states and 111 transitions. [2023-11-21 22:23:47,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 41 transitions, 143 flow [2023-11-21 22:23:47,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 41 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:23:47,572 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 94 flow [2023-11-21 22:23:47,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-11-21 22:23:47,576 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -12 predicate places. [2023-11-21 22:23:47,576 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 94 flow [2023-11-21 22:23:47,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:23:47,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:47,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:23:47,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:23:47,578 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:47,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:47,579 INFO L85 PathProgramCache]: Analyzing trace with hash -755673255, now seen corresponding path program 1 times [2023-11-21 22:23:47,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:47,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773782138] [2023-11-21 22:23:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:47,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:47,714 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 22:23:47,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:47,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773782138] [2023-11-21 22:23:47,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773782138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:47,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:47,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:23:47,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604103331] [2023-11-21 22:23:47,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:47,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:23:47,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:47,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:23:47,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:23:47,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 57 [2023-11-21 22:23:47,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 22:23:47,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:47,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 57 [2023-11-21 22:23:47,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:47,919 INFO L124 PetriNetUnfolderBase]: 608/1114 cut-off events. [2023-11-21 22:23:47,919 INFO L125 PetriNetUnfolderBase]: For 30/33 co-relation queries the response was YES. [2023-11-21 22:23:47,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 1114 events. 608/1114 cut-off events. For 30/33 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5968 event pairs, 608 based on Foata normal form. 29/1128 useless extension candidates. Maximal degree in co-relation 2094. Up to 951 conditions per place. [2023-11-21 22:23:47,929 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 22 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-21 22:23:47,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 136 flow [2023-11-21 22:23:47,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:23:47,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:23:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-21 22:23:47,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.672514619883041 [2023-11-21 22:23:47,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-21 22:23:47,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-21 22:23:47,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:47,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-21 22:23:47,932 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 22:23:47,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:23:47,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:23:47,933 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 94 flow. Second operand 3 states and 115 transitions. [2023-11-21 22:23:47,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 136 flow [2023-11-21 22:23:47,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:23:47,935 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 91 flow [2023-11-21 22:23:47,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-11-21 22:23:47,936 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -13 predicate places. [2023-11-21 22:23:47,936 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 91 flow [2023-11-21 22:23:47,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 22:23:47,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:47,937 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, 1, 1, 1] [2023-11-21 22:23:47,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:23:47,937 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:47,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:47,937 INFO L85 PathProgramCache]: Analyzing trace with hash 141612093, now seen corresponding path program 1 times [2023-11-21 22:23:47,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:47,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531035666] [2023-11-21 22:23:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:47,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:48,423 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 22:23:48,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:48,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531035666] [2023-11-21 22:23:48,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531035666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:48,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:48,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:23:48,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114643239] [2023-11-21 22:23:48,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:48,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:23:48,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:48,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:23:48,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:23:48,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-21 22:23:48,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 91 flow. Second operand has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 22:23:48,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:48,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-21 22:23:48,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:48,891 INFO L124 PetriNetUnfolderBase]: 1711/2781 cut-off events. [2023-11-21 22:23:48,892 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-21 22:23:48,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5484 conditions, 2781 events. 1711/2781 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14693 event pairs, 554 based on Foata normal form. 1/2775 useless extension candidates. Maximal degree in co-relation 5473. Up to 1197 conditions per place. [2023-11-21 22:23:48,909 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 65 selfloop transitions, 9 changer transitions 12/98 dead transitions. [2023-11-21 22:23:48,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 98 transitions, 390 flow [2023-11-21 22:23:48,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:23:48,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:23:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 255 transitions. [2023-11-21 22:23:48,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7456140350877193 [2023-11-21 22:23:48,912 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 255 transitions. [2023-11-21 22:23:48,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 255 transitions. [2023-11-21 22:23:48,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:48,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 255 transitions. [2023-11-21 22:23:48,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 42.5) internal successors, (255), 6 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 22:23:48,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 22:23:48,916 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 22:23:48,916 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 91 flow. Second operand 6 states and 255 transitions. [2023-11-21 22:23:48,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 98 transitions, 390 flow [2023-11-21 22:23:48,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 98 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:23:48,919 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 141 flow [2023-11-21 22:23:48,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-11-21 22:23:48,921 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -6 predicate places. [2023-11-21 22:23:48,921 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 141 flow [2023-11-21 22:23:48,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 22:23:48,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:48,922 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, 1, 1, 1] [2023-11-21 22:23:48,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:23:48,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:48,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:48,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1418270135, now seen corresponding path program 2 times [2023-11-21 22:23:48,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:48,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887038389] [2023-11-21 22:23:48,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:48,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:49,127 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 22:23:49,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:49,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887038389] [2023-11-21 22:23:49,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887038389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:49,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:49,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:23:49,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866942442] [2023-11-21 22:23:49,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:49,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:23:49,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:49,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:23:49,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:23:49,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 57 [2023-11-21 22:23:49,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 22:23:49,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:49,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 57 [2023-11-21 22:23:49,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:49,458 INFO L124 PetriNetUnfolderBase]: 784/1462 cut-off events. [2023-11-21 22:23:49,458 INFO L125 PetriNetUnfolderBase]: For 105/115 co-relation queries the response was YES. [2023-11-21 22:23:49,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2948 conditions, 1462 events. 784/1462 cut-off events. For 105/115 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8155 event pairs, 141 based on Foata normal form. 12/1452 useless extension candidates. Maximal degree in co-relation 2933. Up to 520 conditions per place. [2023-11-21 22:23:49,472 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 51 selfloop transitions, 19 changer transitions 0/93 dead transitions. [2023-11-21 22:23:49,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 386 flow [2023-11-21 22:23:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:23:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:23:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 263 transitions. [2023-11-21 22:23:49,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7690058479532164 [2023-11-21 22:23:49,474 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 263 transitions. [2023-11-21 22:23:49,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 263 transitions. [2023-11-21 22:23:49,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:49,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 263 transitions. [2023-11-21 22:23:49,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 0 states have call successors, (0), 0 states 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 22:23:49,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 22:23:49,477 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 22:23:49,477 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 141 flow. Second operand 6 states and 263 transitions. [2023-11-21 22:23:49,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 386 flow [2023-11-21 22:23:49,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 93 transitions, 379 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-21 22:23:49,481 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 211 flow [2023-11-21 22:23:49,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=56, 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=211, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-11-21 22:23:49,482 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-11-21 22:23:49,482 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 211 flow [2023-11-21 22:23:49,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 22:23:49,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:49,483 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, 1, 1, 1] [2023-11-21 22:23:49,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:23:49,483 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:49,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:49,484 INFO L85 PathProgramCache]: Analyzing trace with hash 520657107, now seen corresponding path program 3 times [2023-11-21 22:23:49,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:49,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200670690] [2023-11-21 22:23:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:49,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:49,595 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 22:23:49,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:49,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200670690] [2023-11-21 22:23:49,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200670690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:49,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:49,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:23:49,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358384670] [2023-11-21 22:23:49,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:49,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:23:49,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:49,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:23:49,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:23:49,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 57 [2023-11-21 22:23:49,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:23:49,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:49,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 57 [2023-11-21 22:23:49,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:49,965 INFO L124 PetriNetUnfolderBase]: 932/1832 cut-off events. [2023-11-21 22:23:49,965 INFO L125 PetriNetUnfolderBase]: For 551/559 co-relation queries the response was YES. [2023-11-21 22:23:49,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4220 conditions, 1832 events. 932/1832 cut-off events. For 551/559 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 11000 event pairs, 255 based on Foata normal form. 32/1859 useless extension candidates. Maximal degree in co-relation 4203. Up to 510 conditions per place. [2023-11-21 22:23:49,983 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 54 selfloop transitions, 21 changer transitions 1/99 dead transitions. [2023-11-21 22:23:49,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 99 transitions, 477 flow [2023-11-21 22:23:49,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:23:49,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:23:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2023-11-21 22:23:49,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7894736842105263 [2023-11-21 22:23:49,985 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 225 transitions. [2023-11-21 22:23:49,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 225 transitions. [2023-11-21 22:23:49,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:49,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 225 transitions. [2023-11-21 22:23:49,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:49,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 22:23:49,989 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 22:23:49,989 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 211 flow. Second operand 5 states and 225 transitions. [2023-11-21 22:23:49,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 99 transitions, 477 flow [2023-11-21 22:23:49,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 99 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:23:49,997 INFO L231 Difference]: Finished difference. Result has 67 places, 71 transitions, 332 flow [2023-11-21 22:23:49,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=67, PETRI_TRANSITIONS=71} [2023-11-21 22:23:49,998 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2023-11-21 22:23:49,998 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 71 transitions, 332 flow [2023-11-21 22:23:49,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:23:49,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:49,999 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, 1, 1, 1] [2023-11-21 22:23:49,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:23:49,999 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:50,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:50,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1481271973, now seen corresponding path program 4 times [2023-11-21 22:23:50,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:50,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174484706] [2023-11-21 22:23:50,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:50,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:23:50,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:50,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174484706] [2023-11-21 22:23:50,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174484706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:50,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:50,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:23:50,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650309946] [2023-11-21 22:23:50,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:50,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:23:50,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:50,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:23:50,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:23:50,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 57 [2023-11-21 22:23:50,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 71 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:23:50,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:50,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 57 [2023-11-21 22:23:50,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:50,499 INFO L124 PetriNetUnfolderBase]: 894/1768 cut-off events. [2023-11-21 22:23:50,499 INFO L125 PetriNetUnfolderBase]: For 1598/1616 co-relation queries the response was YES. [2023-11-21 22:23:50,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4710 conditions, 1768 events. 894/1768 cut-off events. For 1598/1616 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 10576 event pairs, 264 based on Foata normal form. 44/1807 useless extension candidates. Maximal degree in co-relation 4690. Up to 516 conditions per place. [2023-11-21 22:23:50,518 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 51 selfloop transitions, 22 changer transitions 7/103 dead transitions. [2023-11-21 22:23:50,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 103 transitions, 593 flow [2023-11-21 22:23:50,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:23:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:23:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2023-11-21 22:23:50,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7964912280701755 [2023-11-21 22:23:50,520 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 227 transitions. [2023-11-21 22:23:50,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 227 transitions. [2023-11-21 22:23:50,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:50,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 227 transitions. [2023-11-21 22:23:50,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:50,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 22:23:50,522 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 22:23:50,523 INFO L175 Difference]: Start difference. First operand has 67 places, 71 transitions, 332 flow. Second operand 5 states and 227 transitions. [2023-11-21 22:23:50,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 103 transitions, 593 flow [2023-11-21 22:23:50,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 103 transitions, 581 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-21 22:23:50,533 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 384 flow [2023-11-21 22:23:50,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2023-11-21 22:23:50,534 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 8 predicate places. [2023-11-21 22:23:50,535 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 384 flow [2023-11-21 22:23:50,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:23:50,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:50,535 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, 1, 1, 1] [2023-11-21 22:23:50,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:23:50,537 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:50,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:50,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1503892253, now seen corresponding path program 5 times [2023-11-21 22:23:50,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:50,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680689048] [2023-11-21 22:23:50,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:50,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:50,664 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 22:23:50,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:50,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680689048] [2023-11-21 22:23:50,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680689048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:50,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:50,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:23:50,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702994188] [2023-11-21 22:23:50,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:50,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:23:50,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:50,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:23:50,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:23:50,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 57 [2023-11-21 22:23:50,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:23:50,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:50,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 57 [2023-11-21 22:23:50,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:50,886 INFO L124 PetriNetUnfolderBase]: 390/816 cut-off events. [2023-11-21 22:23:50,886 INFO L125 PetriNetUnfolderBase]: For 943/943 co-relation queries the response was YES. [2023-11-21 22:23:50,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 816 events. 390/816 cut-off events. For 943/943 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3888 event pairs, 119 based on Foata normal form. 40/856 useless extension candidates. Maximal degree in co-relation 2276. Up to 230 conditions per place. [2023-11-21 22:23:50,897 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 42 selfloop transitions, 21 changer transitions 4/85 dead transitions. [2023-11-21 22:23:50,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 85 transitions, 533 flow [2023-11-21 22:23:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:23:50,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:23:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2023-11-21 22:23:50,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7649122807017544 [2023-11-21 22:23:50,899 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 218 transitions. [2023-11-21 22:23:50,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 218 transitions. [2023-11-21 22:23:50,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:50,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 218 transitions. [2023-11-21 22:23:50,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 22:23:50,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 22:23:50,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 22:23:50,902 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 384 flow. Second operand 5 states and 218 transitions. [2023-11-21 22:23:50,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 85 transitions, 533 flow [2023-11-21 22:23:50,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 496 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-21 22:23:50,907 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 343 flow [2023-11-21 22:23:50,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-11-21 22:23:50,908 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2023-11-21 22:23:50,908 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 343 flow [2023-11-21 22:23:50,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:23:50,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:50,910 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, 1, 1, 1] [2023-11-21 22:23:50,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:23:50,910 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:50,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:50,911 INFO L85 PathProgramCache]: Analyzing trace with hash -684557273, now seen corresponding path program 6 times [2023-11-21 22:23:50,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:50,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388867470] [2023-11-21 22:23:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:50,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:51,084 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 22:23:51,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:51,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388867470] [2023-11-21 22:23:51,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388867470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:51,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:51,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:23:51,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58301283] [2023-11-21 22:23:51,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:51,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:23:51,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:51,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:23:51,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:23:51,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 57 [2023-11-21 22:23:51,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 22:23:51,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:51,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 57 [2023-11-21 22:23:51,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:51,294 INFO L124 PetriNetUnfolderBase]: 346/746 cut-off events. [2023-11-21 22:23:51,294 INFO L125 PetriNetUnfolderBase]: For 939/943 co-relation queries the response was YES. [2023-11-21 22:23:51,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 746 events. 346/746 cut-off events. For 939/943 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3442 event pairs, 64 based on Foata normal form. 12/754 useless extension candidates. Maximal degree in co-relation 2073. Up to 223 conditions per place. [2023-11-21 22:23:51,300 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 45 selfloop transitions, 24 changer transitions 4/91 dead transitions. [2023-11-21 22:23:51,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 91 transitions, 569 flow [2023-11-21 22:23:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:23:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:23:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 257 transitions. [2023-11-21 22:23:51,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7514619883040936 [2023-11-21 22:23:51,303 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 257 transitions. [2023-11-21 22:23:51,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 257 transitions. [2023-11-21 22:23:51,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:51,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 257 transitions. [2023-11-21 22:23:51,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 22:23:51,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 22:23:51,306 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 22:23:51,306 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 343 flow. Second operand 6 states and 257 transitions. [2023-11-21 22:23:51,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 91 transitions, 569 flow [2023-11-21 22:23:51,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 91 transitions, 546 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:23:51,312 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 356 flow [2023-11-21 22:23:51,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2023-11-21 22:23:51,313 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2023-11-21 22:23:51,313 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 356 flow [2023-11-21 22:23:51,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 22:23:51,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:51,314 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, 1, 1, 1] [2023-11-21 22:23:51,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:23:51,314 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:51,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:51,315 INFO L85 PathProgramCache]: Analyzing trace with hash -997381585, now seen corresponding path program 7 times [2023-11-21 22:23:51,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:51,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140023219] [2023-11-21 22:23:51,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:51,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:51,477 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 22:23:51,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:51,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140023219] [2023-11-21 22:23:51,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140023219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:51,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:51,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:23:51,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387972713] [2023-11-21 22:23:51,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:51,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:23:51,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:51,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:23:51,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:23:51,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 57 [2023-11-21 22:23:51,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 22:23:51,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:51,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 57 [2023-11-21 22:23:51,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:51,721 INFO L124 PetriNetUnfolderBase]: 322/704 cut-off events. [2023-11-21 22:23:51,721 INFO L125 PetriNetUnfolderBase]: For 1179/1179 co-relation queries the response was YES. [2023-11-21 22:23:51,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2059 conditions, 704 events. 322/704 cut-off events. For 1179/1179 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3214 event pairs, 62 based on Foata normal form. 8/708 useless extension candidates. Maximal degree in co-relation 2038. Up to 189 conditions per place. [2023-11-21 22:23:51,727 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 43 selfloop transitions, 22 changer transitions 9/92 dead transitions. [2023-11-21 22:23:51,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 92 transitions, 594 flow [2023-11-21 22:23:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:23:51,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 22:23:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 325 transitions. [2023-11-21 22:23:51,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7127192982456141 [2023-11-21 22:23:51,729 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 325 transitions. [2023-11-21 22:23:51,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 325 transitions. [2023-11-21 22:23:51,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:51,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 325 transitions. [2023-11-21 22:23:51,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.625) internal successors, (325), 8 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 22:23:51,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:51,733 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:51,733 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 356 flow. Second operand 8 states and 325 transitions. [2023-11-21 22:23:51,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 92 transitions, 594 flow [2023-11-21 22:23:51,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 92 transitions, 548 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-21 22:23:51,739 INFO L231 Difference]: Finished difference. Result has 76 places, 58 transitions, 339 flow [2023-11-21 22:23:51,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=339, PETRI_PLACES=76, PETRI_TRANSITIONS=58} [2023-11-21 22:23:51,740 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2023-11-21 22:23:51,740 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 58 transitions, 339 flow [2023-11-21 22:23:51,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 22:23:51,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:51,740 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, 1, 1, 1] [2023-11-21 22:23:51,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:23:51,741 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:51,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:51,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1172880481, now seen corresponding path program 8 times [2023-11-21 22:23:51,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:51,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298373669] [2023-11-21 22:23:51,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:51,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:23:51,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:51,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298373669] [2023-11-21 22:23:51,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298373669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:51,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:51,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:23:51,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527741087] [2023-11-21 22:23:51,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:51,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:23:51,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:51,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:23:51,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:23:51,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 57 [2023-11-21 22:23:51,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 58 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 22:23:51,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:51,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 57 [2023-11-21 22:23:51,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:52,126 INFO L124 PetriNetUnfolderBase]: 250/556 cut-off events. [2023-11-21 22:23:52,126 INFO L125 PetriNetUnfolderBase]: For 924/928 co-relation queries the response was YES. [2023-11-21 22:23:52,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1681 conditions, 556 events. 250/556 cut-off events. For 924/928 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2365 event pairs, 45 based on Foata normal form. 36/592 useless extension candidates. Maximal degree in co-relation 1660. Up to 131 conditions per place. [2023-11-21 22:23:52,131 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 36 selfloop transitions, 12 changer transitions 26/90 dead transitions. [2023-11-21 22:23:52,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 90 transitions, 572 flow [2023-11-21 22:23:52,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:23:52,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 22:23:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 327 transitions. [2023-11-21 22:23:52,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7171052631578947 [2023-11-21 22:23:52,134 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 327 transitions. [2023-11-21 22:23:52,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 327 transitions. [2023-11-21 22:23:52,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:52,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 327 transitions. [2023-11-21 22:23:52,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.875) internal successors, (327), 8 states have internal predecessors, (327), 0 states have call successors, (0), 0 states 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 22:23:52,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:52,138 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:52,138 INFO L175 Difference]: Start difference. First operand has 76 places, 58 transitions, 339 flow. Second operand 8 states and 327 transitions. [2023-11-21 22:23:52,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 90 transitions, 572 flow [2023-11-21 22:23:52,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 522 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-21 22:23:52,144 INFO L231 Difference]: Finished difference. Result has 76 places, 45 transitions, 223 flow [2023-11-21 22:23:52,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=223, PETRI_PLACES=76, PETRI_TRANSITIONS=45} [2023-11-21 22:23:52,145 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2023-11-21 22:23:52,146 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 45 transitions, 223 flow [2023-11-21 22:23:52,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 22:23:52,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:23:52,148 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, 1, 1, 1] [2023-11-21 22:23:52,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:23:52,149 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:23:52,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:52,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1035920627, now seen corresponding path program 9 times [2023-11-21 22:23:52,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:52,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5887831] [2023-11-21 22:23:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:52,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:52,337 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 22:23:52,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:52,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5887831] [2023-11-21 22:23:52,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5887831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:52,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:52,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:23:52,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746442172] [2023-11-21 22:23:52,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:52,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:23:52,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:52,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:23:52,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:23:52,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 57 [2023-11-21 22:23:52,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 45 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 22:23:52,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:23:52,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 57 [2023-11-21 22:23:52,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:23:52,465 INFO L124 PetriNetUnfolderBase]: 34/94 cut-off events. [2023-11-21 22:23:52,465 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2023-11-21 22:23:52,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 94 events. 34/94 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 243 event pairs, 4 based on Foata normal form. 16/110 useless extension candidates. Maximal degree in co-relation 340. Up to 20 conditions per place. [2023-11-21 22:23:52,466 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2023-11-21 22:23:52,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 36 transitions, 228 flow [2023-11-21 22:23:52,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:23:52,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 22:23:52,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 285 transitions. [2023-11-21 22:23:52,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-21 22:23:52,469 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 285 transitions. [2023-11-21 22:23:52,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 285 transitions. [2023-11-21 22:23:52,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:23:52,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 285 transitions. [2023-11-21 22:23:52,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.625) internal successors, (285), 8 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 22:23:52,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:52,472 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:23:52,472 INFO L175 Difference]: Start difference. First operand has 76 places, 45 transitions, 223 flow. Second operand 8 states and 285 transitions. [2023-11-21 22:23:52,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 36 transitions, 228 flow [2023-11-21 22:23:52,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 36 transitions, 174 flow, removed 10 selfloop flow, removed 14 redundant places. [2023-11-21 22:23:52,475 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-11-21 22:23:52,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-11-21 22:23:52,475 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -13 predicate places. [2023-11-21 22:23:52,476 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-11-21 22:23:52,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 22:23:52,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-21 22:23:52,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-21 22:23:52,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-21 22:23:52,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-21 22:23:52,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-21 22:23:52,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-21 22:23:52,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-21 22:23:52,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-21 22:23:52,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-21 22:23:52,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-21 22:23:52,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-21 22:23:52,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-21 22:23:52,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-11-21 22:23:52,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-11-21 22:23:52,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-11-21 22:23:52,483 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-11-21 22:23:52,483 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-11-21 22:23:52,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:23:52,484 INFO L445 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1, 1] [2023-11-21 22:23:52,488 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:23:52,488 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:23:52,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:23:52 BasicIcfg [2023-11-21 22:23:52,494 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:23:52,495 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:23:52,495 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:23:52,495 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:23:52,496 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:23:44" (3/4) ... [2023-11-21 22:23:52,498 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:23:52,501 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-21 22:23:52,502 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-21 22:23:52,502 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-21 22:23:52,513 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 87 nodes and edges [2023-11-21 22:23:52,514 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-21 22:23:52,514 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-21 22:23:52,514 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 22:23:52,628 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:23:52,628 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:23:52,628 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:23:52,629 INFO L158 Benchmark]: Toolchain (without parser) took 9395.63ms. Allocated memory was 138.4MB in the beginning and 270.5MB in the end (delta: 132.1MB). Free memory was 76.9MB in the beginning and 113.8MB in the end (delta: -36.9MB). Peak memory consumption was 96.9MB. Max. memory is 16.1GB. [2023-11-21 22:23:52,630 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 138.4MB. Free memory was 111.5MB in the beginning and 111.4MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:23:52,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.15ms. Allocated memory was 138.4MB in the beginning and 186.6MB in the end (delta: 48.2MB). Free memory was 76.8MB in the beginning and 154.2MB in the end (delta: -77.4MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2023-11-21 22:23:52,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.17ms. Allocated memory is still 186.6MB. Free memory was 154.1MB in the beginning and 156.2MB in the end (delta: -2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:23:52,631 INFO L158 Benchmark]: Boogie Preprocessor took 31.22ms. Allocated memory is still 186.6MB. Free memory was 156.2MB in the beginning and 154.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:23:52,632 INFO L158 Benchmark]: RCFGBuilder took 956.90ms. Allocated memory is still 186.6MB. Free memory was 154.1MB in the beginning and 101.7MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2023-11-21 22:23:52,633 INFO L158 Benchmark]: TraceAbstraction took 7852.05ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 100.5MB in the beginning and 120.1MB in the end (delta: -19.6MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2023-11-21 22:23:52,633 INFO L158 Benchmark]: Witness Printer took 133.83ms. Allocated memory is still 270.5MB. Free memory was 120.1MB in the beginning and 113.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 22:23:52,637 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 138.4MB. Free memory was 111.5MB in the beginning and 111.4MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.15ms. Allocated memory was 138.4MB in the beginning and 186.6MB in the end (delta: 48.2MB). Free memory was 76.8MB in the beginning and 154.2MB in the end (delta: -77.4MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.17ms. Allocated memory is still 186.6MB. Free memory was 154.1MB in the beginning and 156.2MB in the end (delta: -2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.22ms. Allocated memory is still 186.6MB. Free memory was 156.2MB in the beginning and 154.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 956.90ms. Allocated memory is still 186.6MB. Free memory was 154.1MB in the beginning and 101.7MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7852.05ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 100.5MB in the beginning and 120.1MB in the end (delta: -19.6MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. * Witness Printer took 133.83ms. Allocated memory is still 270.5MB. Free memory was 120.1MB in the beginning and 113.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. 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: -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: 101]: 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 7 procedures, 83 locations, 17 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: 7.7s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 657 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 504 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1458 IncrementalHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 32 mSDtfsCounter, 1458 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=384occurred in iteration=10, InterpolantAutomatonStates: 75, 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, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 381 NumberOfCodeBlocks, 381 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 366 ConstructedInterpolants, 0 QuantifiedInterpolants, 1274 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-21 22:23:52,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f389f-a11d-4e52-94d9-1ea643ae1548/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