./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme --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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:50:46,458 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:50:46,554 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:50:46,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:50:46,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:50:46,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:50:46,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:50:46,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:50:46,589 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:50:46,589 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:50:46,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:50:46,590 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:50:46,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:50:46,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:50:46,592 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:50:46,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:50:46,594 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:50:46,594 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:50:46,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:50:46,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:50:46,596 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:50:46,602 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:50:46,602 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:50:46,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:50:46,603 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:50:46,603 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:50:46,604 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:50:46,604 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:50:46,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:50:46,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:50:46,606 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:50:46,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:50:46,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:46,608 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:50:46,608 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:50:46,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:50:46,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:50:46,609 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:50:46,609 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:50:46,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:50:46,610 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:50:46,610 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_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2023-11-26 11:50:46,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:50:46,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:50:46,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:50:46,924 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:50:46,924 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:50:46,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-26 11:50:50,195 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:50:50,589 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:50:50,590 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-26 11:50:50,617 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/data/4fe56bbd0/8fe82d4cad1048889d26787cfb2c252a/FLAG78b492446 [2023-11-26 11:50:50,637 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/data/4fe56bbd0/8fe82d4cad1048889d26787cfb2c252a [2023-11-26 11:50:50,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:50:50,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:50:50,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:50,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:50:50,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:50:50,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:50" (1/1) ... [2023-11-26 11:50:50,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2af422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:50, skipping insertion in model container [2023-11-26 11:50:50,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:50" (1/1) ... [2023-11-26 11:50:50,733 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:50:51,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:51,391 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:50:51,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:51,584 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:50:51,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51 WrapperNode [2023-11-26 11:50:51,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:51,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:51,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:50:51,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:50:51,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,682 INFO L138 Inliner]: procedures = 365, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2023-11-26 11:50:51,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:51,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:50:51,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:50:51,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:50:51,697 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,720 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,751 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2023-11-26 11:50:51,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:50:51,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:50:51,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:50:51,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:50:51,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51" (1/1) ... [2023-11-26 11:50:51,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:51,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:51,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:50:51,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:50:51,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:50:51,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:50:51,872 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:50:51,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:50:51,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:50:51,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:50:51,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:50:51,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:50:51,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:50:51,874 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:50:51,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:50:51,875 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-11-26 11:50:51,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-11-26 11:50:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:50:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:50:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:50:51,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:50:51,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:50:51,881 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:50:52,086 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:50:52,089 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:50:52,335 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:50:52,560 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:50:52,564 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:50:52,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:52 BoogieIcfgContainer [2023-11-26 11:50:52,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:50:52,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:50:52,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:50:52,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:50:52,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:50:50" (1/3) ... [2023-11-26 11:50:52,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4245439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:52, skipping insertion in model container [2023-11-26 11:50:52,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:51" (2/3) ... [2023-11-26 11:50:52,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4245439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:52, skipping insertion in model container [2023-11-26 11:50:52,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:52" (3/3) ... [2023-11-26 11:50:52,581 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-11-26 11:50:52,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:50:52,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-26 11:50:52,603 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:50:52,648 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 11:50:52,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 35 transitions, 77 flow [2023-11-26 11:50:52,727 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2023-11-26 11:50:52,727 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:50:52,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 34 events. 4/34 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 63 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-11-26 11:50:52,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 35 transitions, 77 flow [2023-11-26 11:50:52,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 33 transitions, 72 flow [2023-11-26 11:50:52,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:50:52,756 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;@2a6a9365, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:50:52,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 11:50:52,761 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:50:52,761 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 11:50:52,762 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:50:52,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:52,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:50:52,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-26 11:50:52,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:52,772 INFO L85 PathProgramCache]: Analyzing trace with hash 9036, now seen corresponding path program 1 times [2023-11-26 11:50:52,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:52,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324785392] [2023-11-26 11:50:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:52,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:53,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:53,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324785392] [2023-11-26 11:50:53,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324785392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:53,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:53,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:50:53,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108238563] [2023-11-26 11:50:53,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:53,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:53,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:53,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:53,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:53,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2023-11-26 11:50:53,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:53,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2023-11-26 11:50:53,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:53,206 INFO L124 PetriNetUnfolderBase]: 43/102 cut-off events. [2023-11-26 11:50:53,207 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:50:53,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 102 events. 43/102 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 325 event pairs, 30 based on Foata normal form. 3/103 useless extension candidates. Maximal degree in co-relation 176. Up to 90 conditions per place. [2023-11-26 11:50:53,215 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 18 selfloop transitions, 1 changer transitions 1/26 dead transitions. [2023-11-26 11:50:53,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 96 flow [2023-11-26 11:50:53,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:53,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:53,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2023-11-26 11:50:53,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-11-26 11:50:53,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 51 transitions. [2023-11-26 11:50:53,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 51 transitions. [2023-11-26 11:50:53,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:53,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 51 transitions. [2023-11-26 11:50:53,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,243 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 72 flow. Second operand 3 states and 51 transitions. [2023-11-26 11:50:53,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 96 flow [2023-11-26 11:50:53,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:50:53,249 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 54 flow [2023-11-26 11:50:53,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2023-11-26 11:50:53,256 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-11-26 11:50:53,256 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 54 flow [2023-11-26 11:50:53,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:53,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:50:53,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:50:53,258 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-26 11:50:53,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:53,259 INFO L85 PathProgramCache]: Analyzing trace with hash 9037, now seen corresponding path program 1 times [2023-11-26 11:50:53,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:53,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600129681] [2023-11-26 11:50:53,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:53,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:53,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:53,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600129681] [2023-11-26 11:50:53,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600129681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:53,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:53,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:50:53,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633429156] [2023-11-26 11:50:53,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:53,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:53,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:53,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:53,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:53,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-26 11:50:53,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:53,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-26 11:50:53,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:53,503 INFO L124 PetriNetUnfolderBase]: 37/88 cut-off events. [2023-11-26 11:50:53,506 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:50:53,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 88 events. 37/88 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 261 event pairs, 25 based on Foata normal form. 7/93 useless extension candidates. Maximal degree in co-relation 164. Up to 77 conditions per place. [2023-11-26 11:50:53,508 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 16 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-11-26 11:50:53,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 84 flow [2023-11-26 11:50:53,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:53,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:53,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2023-11-26 11:50:53,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2023-11-26 11:50:53,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 52 transitions. [2023-11-26 11:50:53,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 52 transitions. [2023-11-26 11:50:53,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:53,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 52 transitions. [2023-11-26 11:50:53,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,521 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 54 flow. Second operand 3 states and 52 transitions. [2023-11-26 11:50:53,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 84 flow [2023-11-26 11:50:53,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 83 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:53,523 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 51 flow [2023-11-26 11:50:53,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2023-11-26 11:50:53,525 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -7 predicate places. [2023-11-26 11:50:53,526 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 51 flow [2023-11-26 11:50:53,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:53,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:53,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:50:53,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-26 11:50:53,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:53,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1582458589, now seen corresponding path program 1 times [2023-11-26 11:50:53,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:53,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282458489] [2023-11-26 11:50:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:53,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:53,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:53,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:53,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282458489] [2023-11-26 11:50:53,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282458489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:53,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:53,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:53,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384032379] [2023-11-26 11:50:53,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:53,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:53,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:53,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:53,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:53,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-26 11:50:53,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:53,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-26 11:50:53,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:53,784 INFO L124 PetriNetUnfolderBase]: 61/141 cut-off events. [2023-11-26 11:50:53,784 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:50:53,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 141 events. 61/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 457 event pairs, 25 based on Foata normal form. 6/146 useless extension candidates. Maximal degree in co-relation 265. Up to 78 conditions per place. [2023-11-26 11:50:53,787 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 25 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-26 11:50:53,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 125 flow [2023-11-26 11:50:53,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2023-11-26 11:50:53,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2023-11-26 11:50:53,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 67 transitions. [2023-11-26 11:50:53,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 67 transitions. [2023-11-26 11:50:53,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:53,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 67 transitions. [2023-11-26 11:50:53,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,805 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 51 flow. Second operand 3 states and 67 transitions. [2023-11-26 11:50:53,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 125 flow [2023-11-26 11:50:53,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:53,811 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 62 flow [2023-11-26 11:50:53,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-11-26 11:50:53,813 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-11-26 11:50:53,813 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 62 flow [2023-11-26 11:50:53,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:53,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:53,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:50:53,815 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-26 11:50:53,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:53,816 INFO L85 PathProgramCache]: Analyzing trace with hash -720349234, now seen corresponding path program 1 times [2023-11-26 11:50:53,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:53,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802577875] [2023-11-26 11:50:53,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:53,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:54,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:54,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802577875] [2023-11-26 11:50:54,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802577875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:54,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:54,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:54,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104514696] [2023-11-26 11:50:54,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:54,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:54,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:54,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:54,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:54,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-26 11:50:54,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:54,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-26 11:50:54,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:54,257 INFO L124 PetriNetUnfolderBase]: 101/235 cut-off events. [2023-11-26 11:50:54,257 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-26 11:50:54,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 235 events. 101/235 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 900 event pairs, 45 based on Foata normal form. 10/245 useless extension candidates. Maximal degree in co-relation 489. Up to 126 conditions per place. [2023-11-26 11:50:54,264 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 27 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-26 11:50:54,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 152 flow [2023-11-26 11:50:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:54,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2023-11-26 11:50:54,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2023-11-26 11:50:54,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 67 transitions. [2023-11-26 11:50:54,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 67 transitions. [2023-11-26 11:50:54,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:54,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 67 transitions. [2023-11-26 11:50:54,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,271 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,271 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 62 flow. Second operand 3 states and 67 transitions. [2023-11-26 11:50:54,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 152 flow [2023-11-26 11:50:54,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:54,274 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 72 flow [2023-11-26 11:50:54,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-26 11:50:54,277 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2023-11-26 11:50:54,277 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 72 flow [2023-11-26 11:50:54,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:54,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:54,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:50:54,279 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-26 11:50:54,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1469131688, now seen corresponding path program 1 times [2023-11-26 11:50:54,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:54,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569048354] [2023-11-26 11:50:54,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:54,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:54,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:54,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569048354] [2023-11-26 11:50:54,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569048354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:54,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:54,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:54,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160328805] [2023-11-26 11:50:54,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:54,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:54,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:54,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:54,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:54,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-26 11:50:54,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:54,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-26 11:50:54,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:54,570 INFO L124 PetriNetUnfolderBase]: 69/177 cut-off events. [2023-11-26 11:50:54,570 INFO L125 PetriNetUnfolderBase]: For 78/79 co-relation queries the response was YES. [2023-11-26 11:50:54,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 177 events. 69/177 cut-off events. For 78/79 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 566 event pairs, 25 based on Foata normal form. 16/192 useless extension candidates. Maximal degree in co-relation 423. Up to 80 conditions per place. [2023-11-26 11:50:54,580 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 23 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2023-11-26 11:50:54,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 160 flow [2023-11-26 11:50:54,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:54,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2023-11-26 11:50:54,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2023-11-26 11:50:54,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 64 transitions. [2023-11-26 11:50:54,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 64 transitions. [2023-11-26 11:50:54,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:54,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 64 transitions. [2023-11-26 11:50:54,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,589 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,589 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 72 flow. Second operand 3 states and 64 transitions. [2023-11-26 11:50:54,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 160 flow [2023-11-26 11:50:54,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:54,592 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 78 flow [2023-11-26 11:50:54,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-11-26 11:50:54,595 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-11-26 11:50:54,596 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 78 flow [2023-11-26 11:50:54,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:54,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:54,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:50:54,597 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-26 11:50:54,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:54,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1349169948, now seen corresponding path program 2 times [2023-11-26 11:50:54,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:54,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219577734] [2023-11-26 11:50:54,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:54,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:54,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:54,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219577734] [2023-11-26 11:50:54,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219577734] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:54,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057109383] [2023-11-26 11:50:54,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:50:54,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:54,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:54,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:54,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:50:54,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:50:54,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:54,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:50:54,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:54,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:54,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057109383] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:54,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:54,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-26 11:50:54,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543337971] [2023-11-26 11:50:54,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:54,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:50:54,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:54,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:50:54,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:54,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-26 11:50:54,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:54,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-26 11:50:54,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:55,149 INFO L124 PetriNetUnfolderBase]: 167/386 cut-off events. [2023-11-26 11:50:55,150 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2023-11-26 11:50:55,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 386 events. 167/386 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1349 event pairs, 14 based on Foata normal form. 30/416 useless extension candidates. Maximal degree in co-relation 1014. Up to 86 conditions per place. [2023-11-26 11:50:55,154 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 57 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-11-26 11:50:55,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 68 transitions, 354 flow [2023-11-26 11:50:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:50:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2023-11-26 11:50:55,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2023-11-26 11:50:55,157 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 133 transitions. [2023-11-26 11:50:55,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 133 transitions. [2023-11-26 11:50:55,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:55,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 133 transitions. [2023-11-26 11:50:55,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:55,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:55,162 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:55,162 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 78 flow. Second operand 6 states and 133 transitions. [2023-11-26 11:50:55,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 68 transitions, 354 flow [2023-11-26 11:50:55,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 68 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:55,167 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 114 flow [2023-11-26 11:50:55,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-11-26 11:50:55,170 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-11-26 11:50:55,171 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 114 flow [2023-11-26 11:50:55,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:55,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:55,171 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:55,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:50:55,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:50:55,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-26 11:50:55,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:55,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1669768458, now seen corresponding path program 3 times [2023-11-26 11:50:55,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:55,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988816947] [2023-11-26 11:50:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:55,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 11:50:55,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:55,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988816947] [2023-11-26 11:50:55,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988816947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:55,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456433919] [2023-11-26 11:50:55,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:50:55,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:55,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:55,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:55,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:50:55,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-26 11:50:55,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:55,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:50:55,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 11:50:55,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 11:50:55,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456433919] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:55,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:55,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-26 11:50:55,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412783750] [2023-11-26 11:50:55,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:55,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:50:55,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:55,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:50:55,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:55,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-26 11:50:55,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:55,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:55,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-26 11:50:55,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:55,998 INFO L124 PetriNetUnfolderBase]: 294/703 cut-off events. [2023-11-26 11:50:55,998 INFO L125 PetriNetUnfolderBase]: For 865/866 co-relation queries the response was YES. [2023-11-26 11:50:56,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2047 conditions, 703 events. 294/703 cut-off events. For 865/866 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2939 event pairs, 51 based on Foata normal form. 57/760 useless extension candidates. Maximal degree in co-relation 2034. Up to 156 conditions per place. [2023-11-26 11:50:56,008 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 67 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2023-11-26 11:50:56,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 79 transitions, 524 flow [2023-11-26 11:50:56,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:50:56,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2023-11-26 11:50:56,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2023-11-26 11:50:56,010 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 133 transitions. [2023-11-26 11:50:56,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 133 transitions. [2023-11-26 11:50:56,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:56,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 133 transitions. [2023-11-26 11:50:56,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,014 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,014 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 114 flow. Second operand 6 states and 133 transitions. [2023-11-26 11:50:56,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 79 transitions, 524 flow [2023-11-26 11:50:56,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 79 transitions, 484 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:56,023 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 146 flow [2023-11-26 11:50:56,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2023-11-26 11:50:56,025 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-11-26 11:50:56,025 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 146 flow [2023-11-26 11:50:56,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:56,026 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:56,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:56,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:56,232 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-26 11:50:56,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:56,233 INFO L85 PathProgramCache]: Analyzing trace with hash -118672207, now seen corresponding path program 4 times [2023-11-26 11:50:56,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:56,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111299335] [2023-11-26 11:50:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:56,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 11:50:56,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:56,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111299335] [2023-11-26 11:50:56,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111299335] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:56,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816838065] [2023-11-26 11:50:56,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 11:50:56,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:56,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:56,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:56,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:50:56,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 11:50:56,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:56,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:50:56,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-26 11:50:56,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-26 11:50:56,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816838065] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:56,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:56,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-26 11:50:56,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777308639] [2023-11-26 11:50:56,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:56,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-26 11:50:56,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:56,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-26 11:50:56,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:50:56,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-26 11:50:56,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 146 flow. Second operand has 17 states, 17 states have (on average 17.352941176470587) internal successors, (295), 17 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:56,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-26 11:50:56,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:58,846 INFO L124 PetriNetUnfolderBase]: 899/2082 cut-off events. [2023-11-26 11:50:58,846 INFO L125 PetriNetUnfolderBase]: For 3912/3912 co-relation queries the response was YES. [2023-11-26 11:50:58,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6880 conditions, 2082 events. 899/2082 cut-off events. For 3912/3912 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10201 event pairs, 10 based on Foata normal form. 209/2291 useless extension candidates. Maximal degree in co-relation 6863. Up to 371 conditions per place. [2023-11-26 11:50:58,873 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 471 selfloop transitions, 138 changer transitions 0/615 dead transitions. [2023-11-26 11:50:58,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 615 transitions, 3754 flow [2023-11-26 11:50:58,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-26 11:50:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-11-26 11:50:58,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1460 transitions. [2023-11-26 11:50:58,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226012793176973 [2023-11-26 11:50:58,882 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 1460 transitions. [2023-11-26 11:50:58,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 1460 transitions. [2023-11-26 11:50:58,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:58,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 1460 transitions. [2023-11-26 11:50:58,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 21.791044776119403) internal successors, (1460), 67 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:58,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 35.0) internal successors, (2380), 68 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:58,900 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 35.0) internal successors, (2380), 68 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:58,901 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 146 flow. Second operand 67 states and 1460 transitions. [2023-11-26 11:50:58,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 615 transitions, 3754 flow [2023-11-26 11:50:58,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 615 transitions, 3634 flow, removed 54 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:58,926 INFO L231 Difference]: Finished difference. Result has 158 places, 170 transitions, 1572 flow [2023-11-26 11:50:58,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=1572, PETRI_PLACES=158, PETRI_TRANSITIONS=170} [2023-11-26 11:50:58,927 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 125 predicate places. [2023-11-26 11:50:58,927 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 170 transitions, 1572 flow [2023-11-26 11:50:58,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.352941176470587) internal successors, (295), 17 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:58,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:58,928 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:58,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:59,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:59,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-26 11:50:59,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:59,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1783250311, now seen corresponding path program 5 times [2023-11-26 11:50:59,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:59,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336867711] [2023-11-26 11:50:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:59,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-26 11:50:59,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:59,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336867711] [2023-11-26 11:50:59,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336867711] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:59,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388940373] [2023-11-26 11:50:59,578 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-26 11:50:59,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:59,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:59,579 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:59,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:50:59,818 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-26 11:50:59,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:59,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:50:59,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-26 11:50:59,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:00,173 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-26 11:51:00,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388940373] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:00,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:00,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-26 11:51:00,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651397278] [2023-11-26 11:51:00,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:00,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 11:51:00,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:00,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 11:51:00,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:51:00,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-26 11:51:00,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 170 transitions, 1572 flow. Second operand has 15 states, 15 states have (on average 17.066666666666666) internal successors, (256), 15 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:00,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:00,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-26 11:51:00,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:01,751 INFO L124 PetriNetUnfolderBase]: 1737/4149 cut-off events. [2023-11-26 11:51:01,752 INFO L125 PetriNetUnfolderBase]: For 97803/97803 co-relation queries the response was YES. [2023-11-26 11:51:01,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18191 conditions, 4149 events. 1737/4149 cut-off events. For 97803/97803 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 23522 event pairs, 166 based on Foata normal form. 301/4440 useless extension candidates. Maximal degree in co-relation 18128. Up to 693 conditions per place. [2023-11-26 11:51:01,850 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 249 selfloop transitions, 144 changer transitions 0/405 dead transitions. [2023-11-26 11:51:01,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 405 transitions, 4828 flow [2023-11-26 11:51:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:51:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 11:51:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 321 transitions. [2023-11-26 11:51:01,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551020408163265 [2023-11-26 11:51:01,853 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 321 transitions. [2023-11-26 11:51:01,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 321 transitions. [2023-11-26 11:51:01,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:01,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 321 transitions. [2023-11-26 11:51:01,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 22.928571428571427) internal successors, (321), 14 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:01,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 35.0) internal successors, (525), 15 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:01,856 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 35.0) internal successors, (525), 15 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:01,857 INFO L175 Difference]: Start difference. First operand has 158 places, 170 transitions, 1572 flow. Second operand 14 states and 321 transitions. [2023-11-26 11:51:01,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 405 transitions, 4828 flow [2023-11-26 11:51:02,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 405 transitions, 4684 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 11:51:02,248 INFO L231 Difference]: Finished difference. Result has 173 places, 237 transitions, 2486 flow [2023-11-26 11:51:02,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2486, PETRI_PLACES=173, PETRI_TRANSITIONS=237} [2023-11-26 11:51:02,249 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 140 predicate places. [2023-11-26 11:51:02,249 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 237 transitions, 2486 flow [2023-11-26 11:51:02,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.066666666666666) internal successors, (256), 15 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:02,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:02,250 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:02,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:02,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:02,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-26 11:51:02,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:02,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1316990335, now seen corresponding path program 6 times [2023-11-26 11:51:02,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:02,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443968695] [2023-11-26 11:51:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:02,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-26 11:51:03,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:03,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443968695] [2023-11-26 11:51:03,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443968695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:03,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613251509] [2023-11-26 11:51:03,236 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-26 11:51:03,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:03,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:03,237 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:03,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:51:03,631 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-11-26 11:51:03,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:51:03,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:51:03,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-11-26 11:51:03,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-11-26 11:51:04,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613251509] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:04,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:04,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 35 [2023-11-26 11:51:04,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031482764] [2023-11-26 11:51:04,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:04,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-26 11:51:04,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:04,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-26 11:51:04,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=855, Unknown=0, NotChecked=0, Total=1190 [2023-11-26 11:51:04,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-26 11:51:04,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 237 transitions, 2486 flow. Second operand has 35 states, 35 states have (on average 16.771428571428572) internal successors, (587), 35 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:04,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:04,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-26 11:51:04,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:23,236 INFO L124 PetriNetUnfolderBase]: 3735/8804 cut-off events. [2023-11-26 11:51:23,237 INFO L125 PetriNetUnfolderBase]: For 539514/539514 co-relation queries the response was YES. [2023-11-26 11:51:23,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41548 conditions, 8804 events. 3735/8804 cut-off events. For 539514/539514 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 54336 event pairs, 10 based on Foata normal form. 683/9487 useless extension candidates. Maximal degree in co-relation 41477. Up to 1545 conditions per place. [2023-11-26 11:51:23,393 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 2073 selfloop transitions, 742 changer transitions 0/2822 dead transitions. [2023-11-26 11:51:23,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 2822 transitions, 23824 flow [2023-11-26 11:51:23,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2023-11-26 11:51:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2023-11-26 11:51:23,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 6366 transitions. [2023-11-26 11:51:23,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6165617433414043 [2023-11-26 11:51:23,422 INFO L72 ComplementDD]: Start complementDD. Operand 295 states and 6366 transitions. [2023-11-26 11:51:23,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 295 states and 6366 transitions. [2023-11-26 11:51:23,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:23,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 295 states and 6366 transitions. [2023-11-26 11:51:23,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 296 states, 295 states have (on average 21.579661016949153) internal successors, (6366), 295 states have internal predecessors, (6366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:23,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 296 states, 296 states have (on average 35.0) internal successors, (10360), 296 states have internal predecessors, (10360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:23,513 INFO L81 ComplementDD]: Finished complementDD. Result has 296 states, 296 states have (on average 35.0) internal successors, (10360), 296 states have internal predecessors, (10360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:23,513 INFO L175 Difference]: Start difference. First operand has 173 places, 237 transitions, 2486 flow. Second operand 295 states and 6366 transitions. [2023-11-26 11:51:23,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 2822 transitions, 23824 flow [2023-11-26 11:51:24,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 2822 transitions, 23514 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 11:51:24,280 INFO L231 Difference]: Finished difference. Result has 626 places, 801 transitions, 11128 flow [2023-11-26 11:51:24,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2376, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=295, PETRI_FLOW=11128, PETRI_PLACES=626, PETRI_TRANSITIONS=801} [2023-11-26 11:51:24,281 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 593 predicate places. [2023-11-26 11:51:24,281 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 801 transitions, 11128 flow [2023-11-26 11:51:24,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 16.771428571428572) internal successors, (587), 35 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:24,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:24,282 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:24,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-26 11:51:24,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:51:24,484 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-26 11:51:24,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:24,485 INFO L85 PathProgramCache]: Analyzing trace with hash 665625489, now seen corresponding path program 7 times [2023-11-26 11:51:24,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:24,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135345138] [2023-11-26 11:51:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:24,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 20 proven. 403 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2023-11-26 11:51:25,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135345138] [2023-11-26 11:51:25,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135345138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612945401] [2023-11-26 11:51:25,417 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-26 11:51:25,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:25,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:25,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:25,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0936c86a-437c-4ef9-abbe-41e482ed2097/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:51:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:25,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 11:51:25,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 20 proven. 403 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2023-11-26 11:51:25,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 20 proven. 403 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2023-11-26 11:51:26,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612945401] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:26,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:26,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 23 [2023-11-26 11:51:26,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64174489] [2023-11-26 11:51:26,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:26,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:51:26,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:51:26,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:51:26,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-26 11:51:26,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 801 transitions, 11128 flow. Second operand has 23 states, 23 states have (on average 17.043478260869566) internal successors, (392), 23 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:26,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:26,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-26 11:51:26,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand