./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe012_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe012_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:40,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:40,524 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 08:04:40,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:40,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:40,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:40,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:40,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:40,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:04:40,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:04:40,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:40,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:40,583 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:40,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:40,586 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:04:40,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:04:40,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:04:40,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:40,587 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:04:40,588 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:04:40,588 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:04:40,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:04:40,590 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:04:40,590 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:04:40,591 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:04:40,591 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:40,592 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:40,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:40,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:04:40,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:40,595 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:40,595 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:04:40,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:04:40,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:04:40,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:04:40,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:04:40,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:04:40,597 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:04:40,598 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_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd [2023-11-19 08:04:40,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:40,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:40,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:40,967 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:40,967 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:40,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe012_tso.i [2023-11-19 08:04:44,056 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:44,401 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:44,402 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/sv-benchmarks/c/pthread-wmm/safe012_tso.i [2023-11-19 08:04:44,433 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/data/0014eb259/7f4ae0378cd145e0a813ee0752a35690/FLAG87dcfa761 [2023-11-19 08:04:44,456 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/data/0014eb259/7f4ae0378cd145e0a813ee0752a35690 [2023-11-19 08:04:44,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:44,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:44,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:44,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:44,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:44,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:44,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f14966c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44, skipping insertion in model container [2023-11-19 08:04:44,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:44,537 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:44,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:44,945 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:44,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:45,022 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:45,023 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:45,031 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:45,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:45 WrapperNode [2023-11-19 08:04:45,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:45,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:45,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:45,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:45,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:45" (1/1) ... [2023-11-19 08:04:45,056 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:45" (1/1) ... [2023-11-19 08:04:45,084 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-11-19 08:04:45,084 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:45,085 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:45,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:45,086 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:45,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:45" (1/1) ... [2023-11-19 08:04:45,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:45" (1/1) ... [2023-11-19 08:04:45,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:45" (1/1) ... [2023-11-19 08:04:45,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:45" (1/1) ... [2023-11-19 08:04:45,120 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:45" (1/1) ... [2023-11-19 08:04:45,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:45" (1/1) ... [2023-11-19 08:04:45,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:45" (1/1) ... [2023-11-19 08:04:45,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:45" (1/1) ... [2023-11-19 08:04:45,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:45,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:45,148 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:45,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:45,150 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:45" (1/1) ... [2023-11-19 08:04:45,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:45,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:45,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:45,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:04:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:04:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:04:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:04:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:04:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 08:04:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 08:04:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 08:04:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 08:04:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 08:04:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 08:04:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:04:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:04:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:45,235 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:04:45,451 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:45,454 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:45,759 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:45,772 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:45,772 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:04:45,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:45 BoogieIcfgContainer [2023-11-19 08:04:45,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:45,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:45,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:45,784 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:45,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:44" (1/3) ... [2023-11-19 08:04:45,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653a343f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:45, skipping insertion in model container [2023-11-19 08:04:45,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:45" (2/3) ... [2023-11-19 08:04:45,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653a343f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:45, skipping insertion in model container [2023-11-19 08:04:45,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:45" (3/3) ... [2023-11-19 08:04:45,788 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2023-11-19 08:04:45,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:45,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 08:04:45,810 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:04:45,906 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:04:45,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 108 transitions, 228 flow [2023-11-19 08:04:46,041 INFO L124 PetriNetUnfolderBase]: 3/105 cut-off events. [2023-11-19 08:04:46,042 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:04:46,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 105 events. 3/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-11-19 08:04:46,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 108 transitions, 228 flow [2023-11-19 08:04:46,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 100 transitions, 209 flow [2023-11-19 08:04:46,077 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:04:46,088 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 100 transitions, 209 flow [2023-11-19 08:04:46,092 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 100 transitions, 209 flow [2023-11-19 08:04:46,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 100 transitions, 209 flow [2023-11-19 08:04:46,122 INFO L124 PetriNetUnfolderBase]: 3/100 cut-off events. [2023-11-19 08:04:46,122 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:04:46,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 100 events. 3/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-11-19 08:04:46,126 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-11-19 08:04:49,251 INFO L134 LiptonReduction]: Checked pairs total: 3115 [2023-11-19 08:04:49,251 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-11-19 08:04:49,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:49,274 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;@106d44ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:49,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-19 08:04:49,277 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:04:49,277 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 08:04:49,277 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:04:49,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:49,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:04:49,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:04:49,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:49,284 INFO L85 PathProgramCache]: Analyzing trace with hash 382, now seen corresponding path program 1 times [2023-11-19 08:04:49,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:49,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640033529] [2023-11-19 08:04:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:49,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:49,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:49,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640033529] [2023-11-19 08:04:49,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640033529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:49,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:49,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:04:49,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770922325] [2023-11-19 08:04:49,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:49,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:04:49,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:49,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:04:49,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:04:49,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 211 [2023-11-19 08:04:49,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:49,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:49,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 211 [2023-11-19 08:04:49,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:49,617 INFO L124 PetriNetUnfolderBase]: 513/789 cut-off events. [2023-11-19 08:04:49,617 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:04:49,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1614 conditions, 789 events. 513/789 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3207 event pairs, 513 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 1603. Up to 787 conditions per place. [2023-11-19 08:04:49,628 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 18 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-11-19 08:04:49,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 83 flow [2023-11-19 08:04:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:04:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:04:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 227 transitions. [2023-11-19 08:04:49,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379146919431279 [2023-11-19 08:04:49,643 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 227 transitions. [2023-11-19 08:04:49,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 227 transitions. [2023-11-19 08:04:49,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:49,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 227 transitions. [2023-11-19 08:04:49,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 113.5) internal successors, (227), 2 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) [2023-11-19 08:04:49,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:49,658 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:49,660 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 227 transitions. [2023-11-19 08:04:49,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 83 flow [2023-11-19 08:04:49,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:04:49,664 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2023-11-19 08:04:49,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-11-19 08:04:49,670 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-11-19 08:04:49,670 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2023-11-19 08:04:49,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:49,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:49,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:49,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:04:49,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:04:49,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:49,673 INFO L85 PathProgramCache]: Analyzing trace with hash 174275315, now seen corresponding path program 1 times [2023-11-19 08:04:49,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:49,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33893004] [2023-11-19 08:04:49,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:49,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:50,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:50,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33893004] [2023-11-19 08:04:50,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33893004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:50,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:50,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:50,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578147750] [2023-11-19 08:04:50,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:50,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:50,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:50,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:50,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:50,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 211 [2023-11-19 08:04:50,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:50,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:50,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 211 [2023-11-19 08:04:50,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:50,703 INFO L124 PetriNetUnfolderBase]: 409/638 cut-off events. [2023-11-19 08:04:50,703 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:04:50,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 638 events. 409/638 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2520 event pairs, 108 based on Foata normal form. 0/638 useless extension candidates. Maximal degree in co-relation 1306. Up to 601 conditions per place. [2023-11-19 08:04:50,710 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 22 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-11-19 08:04:50,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 108 flow [2023-11-19 08:04:50,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:04:50,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:04:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 451 transitions. [2023-11-19 08:04:50,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42748815165876775 [2023-11-19 08:04:50,714 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 451 transitions. [2023-11-19 08:04:50,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 451 transitions. [2023-11-19 08:04:50,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:50,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 451 transitions. [2023-11-19 08:04:50,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:50,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:50,723 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:50,723 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 5 states and 451 transitions. [2023-11-19 08:04:50,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 108 flow [2023-11-19 08:04:50,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:04:50,725 INFO L231 Difference]: Finished difference. Result has 30 places, 18 transitions, 48 flow [2023-11-19 08:04:50,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=48, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2023-11-19 08:04:50,726 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2023-11-19 08:04:50,726 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 48 flow [2023-11-19 08:04:50,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:50,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:50,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:50,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:04:50,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:04:50,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:50,728 INFO L85 PathProgramCache]: Analyzing trace with hash 174275297, now seen corresponding path program 1 times [2023-11-19 08:04:50,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:50,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76384308] [2023-11-19 08:04:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:50,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:50,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:50,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76384308] [2023-11-19 08:04:50,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76384308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:50,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:50,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:50,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225413183] [2023-11-19 08:04:50,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:50,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:50,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 211 [2023-11-19 08:04:50,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:50,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:50,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 211 [2023-11-19 08:04:50,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:51,082 INFO L124 PetriNetUnfolderBase]: 452/720 cut-off events. [2023-11-19 08:04:51,082 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-19 08:04:51,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 720 events. 452/720 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3129 event pairs, 174 based on Foata normal form. 48/767 useless extension candidates. Maximal degree in co-relation 1490. Up to 592 conditions per place. [2023-11-19 08:04:51,089 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 23 selfloop transitions, 3 changer transitions 13/40 dead transitions. [2023-11-19 08:04:51,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 178 flow [2023-11-19 08:04:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:04:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:04:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2023-11-19 08:04:51,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654028436018957 [2023-11-19 08:04:51,093 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2023-11-19 08:04:51,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2023-11-19 08:04:51,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:51,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2023-11-19 08:04:51,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,100 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,100 INFO L175 Difference]: Start difference. First operand has 30 places, 18 transitions, 48 flow. Second operand 5 states and 491 transitions. [2023-11-19 08:04:51,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 178 flow [2023-11-19 08:04:51,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 40 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:04:51,102 INFO L231 Difference]: Finished difference. Result has 34 places, 20 transitions, 70 flow [2023-11-19 08:04:51,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2023-11-19 08:04:51,104 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-11-19 08:04:51,104 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 70 flow [2023-11-19 08:04:51,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:51,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:51,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:04:51,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:04:51,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1107519012, now seen corresponding path program 1 times [2023-11-19 08:04:51,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:51,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386877037] [2023-11-19 08:04:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:51,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:51,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:51,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386877037] [2023-11-19 08:04:51,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386877037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:51,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:51,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:51,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595494456] [2023-11-19 08:04:51,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:51,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:51,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:51,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:51,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:51,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 211 [2023-11-19 08:04:51,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:51,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 211 [2023-11-19 08:04:51,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:51,463 INFO L124 PetriNetUnfolderBase]: 399/640 cut-off events. [2023-11-19 08:04:51,464 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2023-11-19 08:04:51,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 640 events. 399/640 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2625 event pairs, 111 based on Foata normal form. 36/672 useless extension candidates. Maximal degree in co-relation 1606. Up to 433 conditions per place. [2023-11-19 08:04:51,470 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 21 selfloop transitions, 3 changer transitions 12/37 dead transitions. [2023-11-19 08:04:51,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 182 flow [2023-11-19 08:04:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:04:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:04:51,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2023-11-19 08:04:51,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46161137440758293 [2023-11-19 08:04:51,495 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2023-11-19 08:04:51,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2023-11-19 08:04:51,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:51,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2023-11-19 08:04:51,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,501 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,502 INFO L175 Difference]: Start difference. First operand has 34 places, 20 transitions, 70 flow. Second operand 5 states and 487 transitions. [2023-11-19 08:04:51,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 182 flow [2023-11-19 08:04:51,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 173 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 08:04:51,506 INFO L231 Difference]: Finished difference. Result has 37 places, 20 transitions, 78 flow [2023-11-19 08:04:51,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=20} [2023-11-19 08:04:51,507 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-11-19 08:04:51,508 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 20 transitions, 78 flow [2023-11-19 08:04:51,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:51,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:51,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:04:51,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:04:51,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:51,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1107520934, now seen corresponding path program 1 times [2023-11-19 08:04:51,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:51,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484618219] [2023-11-19 08:04:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:51,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:51,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:51,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484618219] [2023-11-19 08:04:51,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484618219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:51,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:51,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:51,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300660764] [2023-11-19 08:04:51,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:51,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:51,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:51,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:51,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:51,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 211 [2023-11-19 08:04:51,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 20 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:51,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 211 [2023-11-19 08:04:51,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:51,791 INFO L124 PetriNetUnfolderBase]: 357/577 cut-off events. [2023-11-19 08:04:51,791 INFO L125 PetriNetUnfolderBase]: For 464/464 co-relation queries the response was YES. [2023-11-19 08:04:51,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1503 conditions, 577 events. 357/577 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2342 event pairs, 179 based on Foata normal form. 36/612 useless extension candidates. Maximal degree in co-relation 1494. Up to 433 conditions per place. [2023-11-19 08:04:51,797 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 25 selfloop transitions, 3 changer transitions 12/41 dead transitions. [2023-11-19 08:04:51,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 213 flow [2023-11-19 08:04:51,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:04:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:04:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2023-11-19 08:04:51,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654028436018957 [2023-11-19 08:04:51,800 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2023-11-19 08:04:51,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2023-11-19 08:04:51,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:51,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2023-11-19 08:04:51,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,806 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,807 INFO L175 Difference]: Start difference. First operand has 37 places, 20 transitions, 78 flow. Second operand 5 states and 491 transitions. [2023-11-19 08:04:51,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 213 flow [2023-11-19 08:04:51,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 199 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-19 08:04:51,810 INFO L231 Difference]: Finished difference. Result has 38 places, 20 transitions, 81 flow [2023-11-19 08:04:51,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=81, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2023-11-19 08:04:51,811 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-11-19 08:04:51,812 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 81 flow [2023-11-19 08:04:51,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:51,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:51,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:04:51,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:04:51,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:51,814 INFO L85 PathProgramCache]: Analyzing trace with hash -26694973, now seen corresponding path program 1 times [2023-11-19 08:04:51,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:51,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071636662] [2023-11-19 08:04:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:51,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071636662] [2023-11-19 08:04:51,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071636662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:51,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:51,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:51,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739367919] [2023-11-19 08:04:51,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:51,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:51,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:51,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:51,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:51,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 211 [2023-11-19 08:04:51,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:51,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:51,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 211 [2023-11-19 08:04:51,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:52,123 INFO L124 PetriNetUnfolderBase]: 369/600 cut-off events. [2023-11-19 08:04:52,123 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2023-11-19 08:04:52,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 600 events. 369/600 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2434 event pairs, 127 based on Foata normal form. 27/623 useless extension candidates. Maximal degree in co-relation 1578. Up to 199 conditions per place. [2023-11-19 08:04:52,128 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 21 selfloop transitions, 3 changer transitions 19/44 dead transitions. [2023-11-19 08:04:52,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 232 flow [2023-11-19 08:04:52,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:04:52,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:04:52,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 595 transitions. [2023-11-19 08:04:52,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46998420221169035 [2023-11-19 08:04:52,133 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 595 transitions. [2023-11-19 08:04:52,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 595 transitions. [2023-11-19 08:04:52,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:52,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 595 transitions. [2023-11-19 08:04:52,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.16666666666667) internal successors, (595), 6 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,140 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,140 INFO L175 Difference]: Start difference. First operand has 38 places, 20 transitions, 81 flow. Second operand 6 states and 595 transitions. [2023-11-19 08:04:52,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 232 flow [2023-11-19 08:04:52,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 218 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-19 08:04:52,146 INFO L231 Difference]: Finished difference. Result has 40 places, 18 transitions, 77 flow [2023-11-19 08:04:52,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=40, PETRI_TRANSITIONS=18} [2023-11-19 08:04:52,147 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-11-19 08:04:52,148 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 18 transitions, 77 flow [2023-11-19 08:04:52,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:52,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:52,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:04:52,149 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:04:52,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:52,150 INFO L85 PathProgramCache]: Analyzing trace with hash -826251467, now seen corresponding path program 1 times [2023-11-19 08:04:52,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:52,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473816668] [2023-11-19 08:04:52,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:52,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:52,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:52,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473816668] [2023-11-19 08:04:52,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473816668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:52,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:52,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:52,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690840333] [2023-11-19 08:04:52,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:52,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:52,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:52,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:52,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:52,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 211 [2023-11-19 08:04:52,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 18 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:52,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 211 [2023-11-19 08:04:52,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:52,461 INFO L124 PetriNetUnfolderBase]: 253/428 cut-off events. [2023-11-19 08:04:52,461 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2023-11-19 08:04:52,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1225 conditions, 428 events. 253/428 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1602 event pairs, 91 based on Foata normal form. 24/452 useless extension candidates. Maximal degree in co-relation 1214. Up to 149 conditions per place. [2023-11-19 08:04:52,465 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 20 selfloop transitions, 3 changer transitions 22/45 dead transitions. [2023-11-19 08:04:52,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 267 flow [2023-11-19 08:04:52,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:04:52,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:04:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 599 transitions. [2023-11-19 08:04:52,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731437598736177 [2023-11-19 08:04:52,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 599 transitions. [2023-11-19 08:04:52,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 599 transitions. [2023-11-19 08:04:52,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:52,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 599 transitions. [2023-11-19 08:04:52,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.83333333333333) internal successors, (599), 6 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,475 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,475 INFO L175 Difference]: Start difference. First operand has 40 places, 18 transitions, 77 flow. Second operand 6 states and 599 transitions. [2023-11-19 08:04:52,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 267 flow [2023-11-19 08:04:52,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 202 flow, removed 17 selfloop flow, removed 10 redundant places. [2023-11-19 08:04:52,480 INFO L231 Difference]: Finished difference. Result has 37 places, 18 transitions, 65 flow [2023-11-19 08:04:52,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=65, PETRI_PLACES=37, PETRI_TRANSITIONS=18} [2023-11-19 08:04:52,481 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-11-19 08:04:52,481 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 65 flow [2023-11-19 08:04:52,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:52,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:52,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:04:52,482 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:04:52,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:52,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1191510542, now seen corresponding path program 1 times [2023-11-19 08:04:52,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:52,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546868352] [2023-11-19 08:04:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:52,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:52,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:52,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546868352] [2023-11-19 08:04:52,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546868352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:52,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:52,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:52,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402924002] [2023-11-19 08:04:52,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:52,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:52,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:52,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:52,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:52,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2023-11-19 08:04:52,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 18 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:52,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2023-11-19 08:04:52,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:52,646 INFO L124 PetriNetUnfolderBase]: 68/134 cut-off events. [2023-11-19 08:04:52,646 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-19 08:04:52,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 134 events. 68/134 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 358 event pairs, 22 based on Foata normal form. 6/139 useless extension candidates. Maximal degree in co-relation 348. Up to 119 conditions per place. [2023-11-19 08:04:52,648 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 22 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-11-19 08:04:52,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 143 flow [2023-11-19 08:04:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-11-19 08:04:52,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023696682464455 [2023-11-19 08:04:52,650 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-11-19 08:04:52,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-11-19 08:04:52,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:52,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-11-19 08:04:52,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,655 INFO L175 Difference]: Start difference. First operand has 37 places, 18 transitions, 65 flow. Second operand 3 states and 318 transitions. [2023-11-19 08:04:52,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 143 flow [2023-11-19 08:04:52,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 125 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-19 08:04:52,657 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 75 flow [2023-11-19 08:04:52,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-11-19 08:04:52,658 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2023-11-19 08:04:52,658 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 75 flow [2023-11-19 08:04:52,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:52,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:52,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:04:52,659 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:04:52,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:52,660 INFO L85 PathProgramCache]: Analyzing trace with hash -850687639, now seen corresponding path program 1 times [2023-11-19 08:04:52,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:52,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609279568] [2023-11-19 08:04:52,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:52,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:52,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:52,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609279568] [2023-11-19 08:04:52,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609279568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:52,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:52,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:52,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284281186] [2023-11-19 08:04:52,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:52,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:52,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:52,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:52,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2023-11-19 08:04:52,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:52,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2023-11-19 08:04:52,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:52,824 INFO L124 PetriNetUnfolderBase]: 32/79 cut-off events. [2023-11-19 08:04:52,824 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-19 08:04:52,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 79 events. 32/79 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 167 event pairs, 5 based on Foata normal form. 9/87 useless extension candidates. Maximal degree in co-relation 233. Up to 45 conditions per place. [2023-11-19 08:04:52,825 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 24 selfloop transitions, 7 changer transitions 0/32 dead transitions. [2023-11-19 08:04:52,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 172 flow [2023-11-19 08:04:52,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:04:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 420 transitions. [2023-11-19 08:04:52,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976303317535545 [2023-11-19 08:04:52,828 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 420 transitions. [2023-11-19 08:04:52,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 420 transitions. [2023-11-19 08:04:52,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:52,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 420 transitions. [2023-11-19 08:04:52,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,840 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,841 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 75 flow. Second operand 4 states and 420 transitions. [2023-11-19 08:04:52,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 172 flow [2023-11-19 08:04:52,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:52,842 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 111 flow [2023-11-19 08:04:52,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-11-19 08:04:52,843 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-11-19 08:04:52,844 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 111 flow [2023-11-19 08:04:52,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:52,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:52,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:04:52,845 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:04:52,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash -602576709, now seen corresponding path program 1 times [2023-11-19 08:04:52,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:52,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269136557] [2023-11-19 08:04:52,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:52,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:52,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:52,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269136557] [2023-11-19 08:04:52,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269136557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:52,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:52,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:04:52,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793285708] [2023-11-19 08:04:52,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:52,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:52,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:52,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:52,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:52,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2023-11-19 08:04:52,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:52,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:52,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2023-11-19 08:04:52,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:53,022 INFO L124 PetriNetUnfolderBase]: 19/53 cut-off events. [2023-11-19 08:04:53,023 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-19 08:04:53,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 53 events. 19/53 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 2 based on Foata normal form. 5/57 useless extension candidates. Maximal degree in co-relation 187. Up to 26 conditions per place. [2023-11-19 08:04:53,024 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 21 selfloop transitions, 10 changer transitions 0/32 dead transitions. [2023-11-19 08:04:53,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 196 flow [2023-11-19 08:04:53,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:04:53,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:04:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 517 transitions. [2023-11-19 08:04:53,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4900473933649289 [2023-11-19 08:04:53,027 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 517 transitions. [2023-11-19 08:04:53,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 517 transitions. [2023-11-19 08:04:53,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:53,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 517 transitions. [2023-11-19 08:04:53,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:53,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:53,033 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:53,033 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 111 flow. Second operand 5 states and 517 transitions. [2023-11-19 08:04:53,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 196 flow [2023-11-19 08:04:53,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 176 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-19 08:04:53,035 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 121 flow [2023-11-19 08:04:53,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2023-11-19 08:04:53,036 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-11-19 08:04:53,036 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 121 flow [2023-11-19 08:04:53,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:53,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:53,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:53,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:04:53,038 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:04:53,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:53,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1287853504, now seen corresponding path program 1 times [2023-11-19 08:04:53,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:53,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420212297] [2023-11-19 08:04:53,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:53,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:53,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:53,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420212297] [2023-11-19 08:04:53,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420212297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:53,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:53,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:04:53,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688529560] [2023-11-19 08:04:53,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:53,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:53,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:53,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:53,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:53,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 211 [2023-11-19 08:04:53,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:53,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:53,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 211 [2023-11-19 08:04:53,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:53,257 INFO L124 PetriNetUnfolderBase]: 19/54 cut-off events. [2023-11-19 08:04:53,257 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-19 08:04:53,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 54 events. 19/54 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 5 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 192. Up to 27 conditions per place. [2023-11-19 08:04:53,258 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-11-19 08:04:53,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 29 transitions, 212 flow [2023-11-19 08:04:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:04:53,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:04:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 481 transitions. [2023-11-19 08:04:53,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45592417061611373 [2023-11-19 08:04:53,261 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 481 transitions. [2023-11-19 08:04:53,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 481 transitions. [2023-11-19 08:04:53,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:53,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 481 transitions. [2023-11-19 08:04:53,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:53,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:53,266 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:53,266 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 121 flow. Second operand 5 states and 481 transitions. [2023-11-19 08:04:53,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 29 transitions, 212 flow [2023-11-19 08:04:53,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 180 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-19 08:04:53,268 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-11-19 08:04:53,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-11-19 08:04:53,269 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-11-19 08:04:53,269 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-11-19 08:04:53,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:53,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-19 08:04:53,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-19 08:04:53,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-19 08:04:53,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-19 08:04:53,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-19 08:04:53,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-19 08:04:53,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-19 08:04:53,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-19 08:04:53,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-19 08:04:53,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-19 08:04:53,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-19 08:04:53,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:04:53,276 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:53,279 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 08:04:53,279 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:04:53,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:04:53 BasicIcfg [2023-11-19 08:04:53,283 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:04:53,284 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:04:53,284 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:04:53,284 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:04:53,285 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:45" (3/4) ... [2023-11-19 08:04:53,287 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:04:53,292 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-19 08:04:53,292 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-19 08:04:53,292 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-19 08:04:53,297 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-19 08:04:53,297 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 08:04:53,297 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 08:04:53,298 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:04:53,393 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:04:53,394 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:04:53,394 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:04:53,395 INFO L158 Benchmark]: Toolchain (without parser) took 8928.90ms. Allocated memory was 142.6MB in the beginning and 239.1MB in the end (delta: 96.5MB). Free memory was 98.0MB in the beginning and 117.1MB in the end (delta: -19.1MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. [2023-11-19 08:04:53,395 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory was 115.5MB in the beginning and 115.2MB in the end (delta: 268.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:53,395 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.99ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 77.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 08:04:53,396 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.95ms. Allocated memory is still 142.6MB. Free memory was 77.3MB in the beginning and 75.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:04:53,396 INFO L158 Benchmark]: Boogie Preprocessor took 62.11ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 73.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:04:53,397 INFO L158 Benchmark]: RCFGBuilder took 627.73ms. Allocated memory is still 142.6MB. Free memory was 73.6MB in the beginning and 58.7MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 08:04:53,397 INFO L158 Benchmark]: TraceAbstraction took 7505.33ms. Allocated memory was 142.6MB in the beginning and 239.1MB in the end (delta: 96.5MB). Free memory was 57.8MB in the beginning and 122.3MB in the end (delta: -64.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-19 08:04:53,397 INFO L158 Benchmark]: Witness Printer took 109.92ms. Allocated memory is still 239.1MB. Free memory was 121.3MB in the beginning and 117.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:04:53,401 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory was 115.5MB in the beginning and 115.2MB in the end (delta: 268.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 561.99ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 77.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.95ms. Allocated memory is still 142.6MB. Free memory was 77.3MB in the beginning and 75.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.11ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 73.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 627.73ms. Allocated memory is still 142.6MB. Free memory was 73.6MB in the beginning and 58.7MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7505.33ms. Allocated memory was 142.6MB in the beginning and 239.1MB in the end (delta: 96.5MB). Free memory was 57.8MB in the beginning and 122.3MB in the end (delta: -64.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 109.92ms. Allocated memory is still 239.1MB. Free memory was 121.3MB in the beginning and 117.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 107 PlacesBefore, 35 PlacesAfterwards, 100 TransitionsBefore, 26 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 103 TotalNumberOfCompositions, 3115 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1851, independent: 1781, independent conditional: 0, independent unconditional: 1781, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1196, independent: 1177, independent conditional: 0, independent unconditional: 1177, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1851, independent: 604, independent conditional: 0, independent unconditional: 604, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 1196, unknown conditional: 0, unknown unconditional: 1196] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 41, Positive conditional cache size: 0, Positive unconditional cache size: 41, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 778]: 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, 133 locations, 11 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: 7.3s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 370 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 296 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 801 IncrementalHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 16 mSDtfsCounter, 801 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=10, InterpolantAutomatonStates: 51, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 558 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 08:04:53,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9834929b-85d8-4398-8f16-cd8f79021be3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE