./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 cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/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_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl --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 0.2.3-dev-cf1a783 [2023-11-12 02:11:07,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:11:07,628 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:11:07,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:11:07,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:11:07,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:11:07,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:11:07,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:11:07,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:11:07,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:11:07,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:11:07,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:11:07,688 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:11:07,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:11:07,691 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:11:07,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:11:07,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:11:07,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:11:07,693 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:11:07,694 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:11:07,694 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:11:07,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:11:07,695 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:11:07,696 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:11:07,697 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:11:07,697 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:11:07,698 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:11:07,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:11:07,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:11:07,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:07,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:11:07,702 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:11:07,702 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:11:07,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:11:07,703 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:11:07,703 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:11:07,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:11:07,704 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:11:07,704 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_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2023-11-12 02:11:08,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:11:08,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:11:08,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:11:08,123 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:11:08,124 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:11:08,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-12 02:11:11,283 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:11:11,676 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:11:11,676 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-12 02:11:11,695 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/data/cbd1b10e2/2c33aa042c2e41fea8fc0d76004fd6bb/FLAG3ae7a242d [2023-11-12 02:11:11,709 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/data/cbd1b10e2/2c33aa042c2e41fea8fc0d76004fd6bb [2023-11-12 02:11:11,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:11:11,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:11:11,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:11,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:11:11,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:11:11,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:11" (1/1) ... [2023-11-12 02:11:11,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ddf9669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:11, skipping insertion in model container [2023-11-12 02:11:11,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:11" (1/1) ... [2023-11-12 02:11:11,803 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:11:12,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:12,412 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:11:12,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:12,671 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:11:12,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:12 WrapperNode [2023-11-12 02:11:12,672 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:12,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:12,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:11:12,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:11:12,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:12" (1/1) ... [2023-11-12 02:11:12,718 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:12" (1/1) ... [2023-11-12 02:11:12,760 INFO L138 Inliner]: procedures = 364, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2023-11-12 02:11:12,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:12,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:11:12,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:11:12,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:11:12,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:12" (1/1) ... [2023-11-12 02:11:12,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:12" (1/1) ... [2023-11-12 02:11:12,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:12" (1/1) ... [2023-11-12 02:11:12,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:12" (1/1) ... [2023-11-12 02:11:12,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:12" (1/1) ... [2023-11-12 02:11:12,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:12" (1/1) ... [2023-11-12 02:11:12,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:12" (1/1) ... [2023-11-12 02:11:12,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:12" (1/1) ... [2023-11-12 02:11:12,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:11:12,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:11:12,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:11:12,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:11:12,821 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:12" (1/1) ... [2023-11-12 02:11:12,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:12,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:12,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:11:12,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:11:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:11:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:11:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:11:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:11:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:11:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:11:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-11-12 02:11:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-11-12 02:11:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:11:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:11:12,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:11:12,913 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:11:13,083 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:11:13,085 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:11:13,282 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:11:13,291 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:11:13,291 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:11:13,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:13 BoogieIcfgContainer [2023-11-12 02:11:13,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:11:13,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:11:13,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:11:13,300 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:11:13,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:11:11" (1/3) ... [2023-11-12 02:11:13,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4fb9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:13, skipping insertion in model container [2023-11-12 02:11:13,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:12" (2/3) ... [2023-11-12 02:11:13,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4fb9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:13, skipping insertion in model container [2023-11-12 02:11:13,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:13" (3/3) ... [2023-11-12 02:11:13,304 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-11-12 02:11:13,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:11:13,322 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-12 02:11:13,323 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:11:13,403 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:11:13,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 101 transitions, 209 flow [2023-11-12 02:11:13,501 INFO L124 PetriNetUnfolderBase]: 8/100 cut-off events. [2023-11-12 02:11:13,502 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:11:13,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 100 events. 8/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-11-12 02:11:13,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 101 transitions, 209 flow [2023-11-12 02:11:13,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 95 transitions, 196 flow [2023-11-12 02:11:13,517 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:11:13,533 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 95 transitions, 196 flow [2023-11-12 02:11:13,536 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 95 transitions, 196 flow [2023-11-12 02:11:13,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 95 transitions, 196 flow [2023-11-12 02:11:13,564 INFO L124 PetriNetUnfolderBase]: 8/95 cut-off events. [2023-11-12 02:11:13,564 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:11:13,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 8/95 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 115 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-11-12 02:11:13,567 INFO L119 LiptonReduction]: Number of co-enabled transitions 798 [2023-11-12 02:11:16,426 INFO L134 LiptonReduction]: Checked pairs total: 1137 [2023-11-12 02:11:16,426 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-11-12 02:11:16,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:11:16,450 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;@29902025, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:11:16,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-12 02:11:16,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:11:16,453 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-12 02:11:16,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:11:16,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:16,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:11:16,455 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)] === [2023-11-12 02:11:16,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:16,460 INFO L85 PathProgramCache]: Analyzing trace with hash 385, now seen corresponding path program 1 times [2023-11-12 02:11:16,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:16,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840063686] [2023-11-12 02:11:16,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:16,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:16,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:16,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840063686] [2023-11-12 02:11:16,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840063686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:16,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:16,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:11:16,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036137353] [2023-11-12 02:11:16,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:16,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:11:16,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:16,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:11:16,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:11:16,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 200 [2023-11-12 02:11:16,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:16,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:16,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 200 [2023-11-12 02:11:16,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:16,690 INFO L124 PetriNetUnfolderBase]: 37/80 cut-off events. [2023-11-12 02:11:16,690 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:11:16,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 80 events. 37/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 244 event pairs, 25 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 148. Up to 77 conditions per place. [2023-11-12 02:11:16,692 INFO L140 encePairwiseOnDemand]: 197/200 looper letters, 16 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-11-12 02:11:16,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 17 transitions, 72 flow [2023-11-12 02:11:16,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:11:16,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:11:16,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 199 transitions. [2023-11-12 02:11:16,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975 [2023-11-12 02:11:16,709 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 199 transitions. [2023-11-12 02:11:16,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 199 transitions. [2023-11-12 02:11:16,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:16,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 199 transitions. [2023-11-12 02:11:16,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:16,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:16,723 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:16,725 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 46 flow. Second operand 2 states and 199 transitions. [2023-11-12 02:11:16,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 17 transitions, 72 flow [2023-11-12 02:11:16,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 68 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:11:16,730 INFO L231 Difference]: Finished difference. Result has 18 places, 17 transitions, 36 flow [2023-11-12 02:11:16,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=18, PETRI_TRANSITIONS=17} [2023-11-12 02:11:16,736 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -4 predicate places. [2023-11-12 02:11:16,737 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 17 transitions, 36 flow [2023-11-12 02:11:16,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:16,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:16,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:11:16,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:11:16,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-12 02:11:16,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:16,739 INFO L85 PathProgramCache]: Analyzing trace with hash 11758035, now seen corresponding path program 1 times [2023-11-12 02:11:16,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:16,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211974632] [2023-11-12 02:11:16,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:16,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:16,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:16,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211974632] [2023-11-12 02:11:16,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211974632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:16,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:16,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:11:16,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206361797] [2023-11-12 02:11:16,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:16,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:16,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:16,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:16,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:11:16,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 200 [2023-11-12 02:11:16,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 17 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 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) [2023-11-12 02:11:16,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:16,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 200 [2023-11-12 02:11:16,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:16,991 INFO L124 PetriNetUnfolderBase]: 49/112 cut-off events. [2023-11-12 02:11:16,991 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:11:16,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 112 events. 49/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 367 event pairs, 25 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 213. Up to 77 conditions per place. [2023-11-12 02:11:16,993 INFO L140 encePairwiseOnDemand]: 195/200 looper letters, 22 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-12 02:11:16,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 25 transitions, 100 flow [2023-11-12 02:11:16,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2023-11-12 02:11:16,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465 [2023-11-12 02:11:16,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2023-11-12 02:11:16,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2023-11-12 02:11:16,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:16,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2023-11-12 02:11:17,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:17,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:17,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:17,004 INFO L175 Difference]: Start difference. First operand has 18 places, 17 transitions, 36 flow. Second operand 3 states and 279 transitions. [2023-11-12 02:11:17,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 25 transitions, 100 flow [2023-11-12 02:11:17,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 25 transitions, 100 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:11:17,005 INFO L231 Difference]: Finished difference. Result has 21 places, 18 transitions, 52 flow [2023-11-12 02:11:17,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=21, PETRI_TRANSITIONS=18} [2023-11-12 02:11:17,006 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2023-11-12 02:11:17,007 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 18 transitions, 52 flow [2023-11-12 02:11:17,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 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) [2023-11-12 02:11:17,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:17,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:17,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:11:17,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-12 02:11:17,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:17,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1903949820, now seen corresponding path program 1 times [2023-11-12 02:11:17,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:17,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372393193] [2023-11-12 02:11:17,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:17,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:17,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:17,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372393193] [2023-11-12 02:11:17,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372393193] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:17,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520419217] [2023-11-12 02:11:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:17,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:17,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:17,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:17,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:11:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:17,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:11:17,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:17,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:11:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:17,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520419217] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:11:17,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:11:17,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 02:11:17,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985556027] [2023-11-12 02:11:17,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:11:17,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:11:17,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:11:17,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:11:17,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 200 [2023-11-12 02:11:17,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 52 flow. Second operand has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:17,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:17,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 200 [2023-11-12 02:11:17,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:17,526 INFO L124 PetriNetUnfolderBase]: 79/184 cut-off events. [2023-11-12 02:11:17,526 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-12 02:11:17,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 184 events. 79/184 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 552 event pairs, 20 based on Foata normal form. 18/177 useless extension candidates. Maximal degree in co-relation 399. Up to 59 conditions per place. [2023-11-12 02:11:17,529 INFO L140 encePairwiseOnDemand]: 194/200 looper letters, 41 selfloop transitions, 6 changer transitions 0/48 dead transitions. [2023-11-12 02:11:17,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 48 transitions, 210 flow [2023-11-12 02:11:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:11:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:11:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 554 transitions. [2023-11-12 02:11:17,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46166666666666667 [2023-11-12 02:11:17,537 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 554 transitions. [2023-11-12 02:11:17,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 554 transitions. [2023-11-12 02:11:17,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:17,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 554 transitions. [2023-11-12 02:11:17,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:17,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 200.0) internal successors, (1400), 7 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:17,549 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 200.0) internal successors, (1400), 7 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:17,550 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 52 flow. Second operand 6 states and 554 transitions. [2023-11-12 02:11:17,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 48 transitions, 210 flow [2023-11-12 02:11:17,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 48 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:17,552 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 102 flow [2023-11-12 02:11:17,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-11-12 02:11:17,554 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2023-11-12 02:11:17,554 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 102 flow [2023-11-12 02:11:17,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:17,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:17,555 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1] [2023-11-12 02:11:17,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:11:17,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:17,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-12 02:11:17,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:17,762 INFO L85 PathProgramCache]: Analyzing trace with hash -215994733, now seen corresponding path program 2 times [2023-11-12 02:11:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:17,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985739876] [2023-11-12 02:11:17,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:17,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:17,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:17,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985739876] [2023-11-12 02:11:17,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985739876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:17,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360926580] [2023-11-12 02:11:17,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:11:17,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:17,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:17,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:17,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:11:18,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:11:18,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:11:18,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:11:18,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:18,096 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:11:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-12 02:11:18,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:11:18,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360926580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:18,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:11:18,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-11-12 02:11:18,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384019806] [2023-11-12 02:11:18,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:18,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:18,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:18,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:18,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:11:18,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 200 [2023-11-12 02:11:18,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:18,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 200 [2023-11-12 02:11:18,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:18,319 INFO L124 PetriNetUnfolderBase]: 73/164 cut-off events. [2023-11-12 02:11:18,320 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2023-11-12 02:11:18,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 164 events. 73/164 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 462 event pairs, 55 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 481. Up to 148 conditions per place. [2023-11-12 02:11:18,326 INFO L140 encePairwiseOnDemand]: 198/200 looper letters, 18 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-11-12 02:11:18,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 130 flow [2023-11-12 02:11:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:18,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-11-12 02:11:18,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2023-11-12 02:11:18,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-11-12 02:11:18,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-11-12 02:11:18,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:18,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-11-12 02:11:18,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,335 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 102 flow. Second operand 3 states and 268 transitions. [2023-11-12 02:11:18,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 130 flow [2023-11-12 02:11:18,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 122 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:18,344 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 86 flow [2023-11-12 02:11:18,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-11-12 02:11:18,347 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2023-11-12 02:11:18,347 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 86 flow [2023-11-12 02:11:18,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:18,349 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1] [2023-11-12 02:11:18,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:18,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:18,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-12 02:11:18,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:18,555 INFO L85 PathProgramCache]: Analyzing trace with hash -215994734, now seen corresponding path program 1 times [2023-11-12 02:11:18,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:18,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636241901] [2023-11-12 02:11:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:18,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-12 02:11:18,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:18,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636241901] [2023-11-12 02:11:18,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636241901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:18,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:18,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:11:18,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763384476] [2023-11-12 02:11:18,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:18,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:18,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:18,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:18,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:11:18,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 200 [2023-11-12 02:11:18,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:18,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 200 [2023-11-12 02:11:18,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:18,736 INFO L124 PetriNetUnfolderBase]: 67/152 cut-off events. [2023-11-12 02:11:18,736 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-12 02:11:18,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 152 events. 67/152 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 423 event pairs, 50 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 410. Up to 136 conditions per place. [2023-11-12 02:11:18,738 INFO L140 encePairwiseOnDemand]: 198/200 looper letters, 17 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-11-12 02:11:18,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 112 flow [2023-11-12 02:11:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-11-12 02:11:18,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2023-11-12 02:11:18,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-11-12 02:11:18,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-11-12 02:11:18,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:18,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-11-12 02:11:18,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,745 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 86 flow. Second operand 3 states and 258 transitions. [2023-11-12 02:11:18,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 112 flow [2023-11-12 02:11:18,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 19 transitions, 111 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:18,748 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 77 flow [2023-11-12 02:11:18,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2023-11-12 02:11:18,749 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2023-11-12 02:11:18,749 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 77 flow [2023-11-12 02:11:18,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:18,750 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:18,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:11:18,751 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)] === [2023-11-12 02:11:18,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:18,751 INFO L85 PathProgramCache]: Analyzing trace with hash 317824133, now seen corresponding path program 1 times [2023-11-12 02:11:18,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:18,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525176740] [2023-11-12 02:11:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:18,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-12 02:11:18,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:18,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525176740] [2023-11-12 02:11:18,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525176740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:18,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:18,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:11:18,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481241678] [2023-11-12 02:11:18,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:18,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:18,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:18,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:18,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:11:18,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 200 [2023-11-12 02:11:18,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:18,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 200 [2023-11-12 02:11:18,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:18,887 INFO L124 PetriNetUnfolderBase]: 111/232 cut-off events. [2023-11-12 02:11:18,888 INFO L125 PetriNetUnfolderBase]: For 290/290 co-relation queries the response was YES. [2023-11-12 02:11:18,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 232 events. 111/232 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 846 event pairs, 50 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 659. Up to 137 conditions per place. [2023-11-12 02:11:18,891 INFO L140 encePairwiseOnDemand]: 197/200 looper letters, 28 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-12 02:11:18,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 195 flow [2023-11-12 02:11:18,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:18,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:18,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-11-12 02:11:18,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683333333333333 [2023-11-12 02:11:18,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-11-12 02:11:18,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-11-12 02:11:18,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:18,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-11-12 02:11:18,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,898 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 77 flow. Second operand 3 states and 281 transitions. [2023-11-12 02:11:18,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 195 flow [2023-11-12 02:11:18,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:18,901 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 88 flow [2023-11-12 02:11:18,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-11-12 02:11:18,903 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 9 predicate places. [2023-11-12 02:11:18,903 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 88 flow [2023-11-12 02:11:18,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:18,904 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:18,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:11:18,904 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)] === [2023-11-12 02:11:18,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:18,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1968047379, now seen corresponding path program 1 times [2023-11-12 02:11:18,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:18,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061476737] [2023-11-12 02:11:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:18,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-12 02:11:19,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:19,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061476737] [2023-11-12 02:11:19,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061476737] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:19,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356452031] [2023-11-12 02:11:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:19,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:19,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:19,003 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:19,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:11:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:19,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:11:19,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-12 02:11:19,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:11:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-12 02:11:19,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356452031] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:11:19,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:11:19,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-12 02:11:19,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823010082] [2023-11-12 02:11:19,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:11:19,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:11:19,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:19,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:11:19,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:11:19,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 200 [2023-11-12 02:11:19,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:19,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:19,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 200 [2023-11-12 02:11:19,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:19,403 INFO L124 PetriNetUnfolderBase]: 210/430 cut-off events. [2023-11-12 02:11:19,403 INFO L125 PetriNetUnfolderBase]: For 572/572 co-relation queries the response was YES. [2023-11-12 02:11:19,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 430 events. 210/430 cut-off events. For 572/572 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1600 event pairs, 26 based on Foata normal form. 33/463 useless extension candidates. Maximal degree in co-relation 1312. Up to 114 conditions per place. [2023-11-12 02:11:19,409 INFO L140 encePairwiseOnDemand]: 196/200 looper letters, 57 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2023-11-12 02:11:19,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 64 transitions, 442 flow [2023-11-12 02:11:19,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:11:19,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:11:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 556 transitions. [2023-11-12 02:11:19,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4633333333333333 [2023-11-12 02:11:19,412 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 556 transitions. [2023-11-12 02:11:19,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 556 transitions. [2023-11-12 02:11:19,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:19,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 556 transitions. [2023-11-12 02:11:19,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:19,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 200.0) internal successors, (1400), 7 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:19,418 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 200.0) internal successors, (1400), 7 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:19,418 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 88 flow. Second operand 6 states and 556 transitions. [2023-11-12 02:11:19,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 64 transitions, 442 flow [2023-11-12 02:11:19,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 64 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:19,422 INFO L231 Difference]: Finished difference. Result has 39 places, 23 transitions, 126 flow [2023-11-12 02:11:19,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=39, PETRI_TRANSITIONS=23} [2023-11-12 02:11:19,423 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 17 predicate places. [2023-11-12 02:11:19,423 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 126 flow [2023-11-12 02:11:19,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:19,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:19,424 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:19,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:19,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:11:19,635 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)] === [2023-11-12 02:11:19,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash -375569429, now seen corresponding path program 2 times [2023-11-12 02:11:19,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:19,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861668444] [2023-11-12 02:11:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:19,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:19,808 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-12 02:11:19,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:19,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861668444] [2023-11-12 02:11:19,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861668444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:19,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:19,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:11:19,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647632249] [2023-11-12 02:11:19,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:19,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:19,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:19,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:11:19,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 200 [2023-11-12 02:11:19,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 23 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:19,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:19,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 200 [2023-11-12 02:11:19,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:19,899 INFO L124 PetriNetUnfolderBase]: 82/274 cut-off events. [2023-11-12 02:11:19,899 INFO L125 PetriNetUnfolderBase]: For 645/645 co-relation queries the response was YES. [2023-11-12 02:11:19,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 274 events. 82/274 cut-off events. For 645/645 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 958 event pairs, 36 based on Foata normal form. 80/354 useless extension candidates. Maximal degree in co-relation 931. Up to 158 conditions per place. [2023-11-12 02:11:19,902 INFO L140 encePairwiseOnDemand]: 196/200 looper letters, 14 selfloop transitions, 12 changer transitions 0/27 dead transitions. [2023-11-12 02:11:19,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 27 transitions, 211 flow [2023-11-12 02:11:19,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:19,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-11-12 02:11:19,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-11-12 02:11:19,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-11-12 02:11:19,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-11-12 02:11:19,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:19,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-11-12 02:11:19,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:19,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:19,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:19,908 INFO L175 Difference]: Start difference. First operand has 39 places, 23 transitions, 126 flow. Second operand 3 states and 275 transitions. [2023-11-12 02:11:19,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 27 transitions, 211 flow [2023-11-12 02:11:19,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 27 transitions, 202 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:19,911 INFO L231 Difference]: Finished difference. Result has 40 places, 23 transitions, 142 flow [2023-11-12 02:11:19,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2023-11-12 02:11:19,912 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 18 predicate places. [2023-11-12 02:11:19,912 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 142 flow [2023-11-12 02:11:19,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:19,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:19,912 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:19,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:11:19,913 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)] === [2023-11-12 02:11:19,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:19,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1055662705, now seen corresponding path program 3 times [2023-11-12 02:11:19,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:19,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729529242] [2023-11-12 02:11:19,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:19,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:20,060 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-12 02:11:20,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:20,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729529242] [2023-11-12 02:11:20,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729529242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:20,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946309821] [2023-11-12 02:11:20,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:11:20,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:20,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:20,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:20,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:11:20,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-12 02:11:20,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:11:20,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:11:20,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-12 02:11:20,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:11:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-12 02:11:20,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946309821] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:11:20,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:11:20,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-12 02:11:20,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131866308] [2023-11-12 02:11:20,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:11:20,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-12 02:11:20,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:20,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-12 02:11:20,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:11:20,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 200 [2023-11-12 02:11:20,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 142 flow. Second operand has 17 states, 17 states have (on average 82.70588235294117) internal successors, (1406), 17 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:20,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:20,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 200 [2023-11-12 02:11:20,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:21,912 INFO L124 PetriNetUnfolderBase]: 177/677 cut-off events. [2023-11-12 02:11:21,912 INFO L125 PetriNetUnfolderBase]: For 2466/2466 co-relation queries the response was YES. [2023-11-12 02:11:21,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 677 events. 177/677 cut-off events. For 2466/2466 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2960 event pairs, 5 based on Foata normal form. 127/804 useless extension candidates. Maximal degree in co-relation 2512. Up to 166 conditions per place. [2023-11-12 02:11:21,920 INFO L140 encePairwiseOnDemand]: 193/200 looper letters, 278 selfloop transitions, 138 changer transitions 0/417 dead transitions. [2023-11-12 02:11:21,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 417 transitions, 3286 flow [2023-11-12 02:11:21,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-12 02:11:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-11-12 02:11:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 5756 transitions. [2023-11-12 02:11:21,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42955223880597015 [2023-11-12 02:11:21,943 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 5756 transitions. [2023-11-12 02:11:21,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 5756 transitions. [2023-11-12 02:11:21,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:21,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 5756 transitions. [2023-11-12 02:11:21,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 85.91044776119404) internal successors, (5756), 67 states have internal predecessors, (5756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:22,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 200.0) internal successors, (13600), 68 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:22,026 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 200.0) internal successors, (13600), 68 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:22,027 INFO L175 Difference]: Start difference. First operand has 40 places, 23 transitions, 142 flow. Second operand 67 states and 5756 transitions. [2023-11-12 02:11:22,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 417 transitions, 3286 flow [2023-11-12 02:11:22,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 417 transitions, 3028 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:22,044 INFO L231 Difference]: Finished difference. Result has 151 places, 162 transitions, 1688 flow [2023-11-12 02:11:22,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=1688, PETRI_PLACES=151, PETRI_TRANSITIONS=162} [2023-11-12 02:11:22,047 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 129 predicate places. [2023-11-12 02:11:22,047 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 162 transitions, 1688 flow [2023-11-12 02:11:22,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 82.70588235294117) internal successors, (1406), 17 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:22,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:22,048 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:22,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:22,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-12 02:11:22,256 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)] === [2023-11-12 02:11:22,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:22,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1209029140, now seen corresponding path program 4 times [2023-11-12 02:11:22,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:22,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376513559] [2023-11-12 02:11:22,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:22,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:22,561 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-12 02:11:22,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:22,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376513559] [2023-11-12 02:11:22,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376513559] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:22,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483541447] [2023-11-12 02:11:22,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 02:11:22,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:22,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:22,563 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:22,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:11:22,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 02:11:22,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:11:22,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:11:22,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-12 02:11:22,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:11:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-12 02:11:23,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483541447] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:11:23,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:11:23,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-12 02:11:23,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224954791] [2023-11-12 02:11:23,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:11:23,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 02:11:23,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 02:11:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:11:23,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 200 [2023-11-12 02:11:23,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 162 transitions, 1688 flow. Second operand has 15 states, 15 states have (on average 85.8) internal successors, (1287), 15 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:23,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:23,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 200 [2023-11-12 02:11:23,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:23,744 INFO L124 PetriNetUnfolderBase]: 280/1240 cut-off events. [2023-11-12 02:11:23,744 INFO L125 PetriNetUnfolderBase]: For 64877/64877 co-relation queries the response was YES. [2023-11-12 02:11:23,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 1240 events. 280/1240 cut-off events. For 64877/64877 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6764 event pairs, 45 based on Foata normal form. 301/1541 useless extension candidates. Maximal degree in co-relation 6809. Up to 307 conditions per place. [2023-11-12 02:11:23,770 INFO L140 encePairwiseOnDemand]: 196/200 looper letters, 238 selfloop transitions, 144 changer transitions 0/383 dead transitions. [2023-11-12 02:11:23,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 383 transitions, 5298 flow [2023-11-12 02:11:23,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:11:23,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-12 02:11:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1278 transitions. [2023-11-12 02:11:23,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564285714285714 [2023-11-12 02:11:23,778 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1278 transitions. [2023-11-12 02:11:23,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1278 transitions. [2023-11-12 02:11:23,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:23,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1278 transitions. [2023-11-12 02:11:23,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 91.28571428571429) internal successors, (1278), 14 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:23,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 200.0) internal successors, (3000), 15 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:23,791 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 200.0) internal successors, (3000), 15 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:23,791 INFO L175 Difference]: Start difference. First operand has 151 places, 162 transitions, 1688 flow. Second operand 14 states and 1278 transitions. [2023-11-12 02:11:23,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 383 transitions, 5298 flow [2023-11-12 02:11:23,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 383 transitions, 5154 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-12 02:11:23,962 INFO L231 Difference]: Finished difference. Result has 166 places, 229 transitions, 2669 flow [2023-11-12 02:11:23,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2669, PETRI_PLACES=166, PETRI_TRANSITIONS=229} [2023-11-12 02:11:23,964 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 144 predicate places. [2023-11-12 02:11:23,964 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 229 transitions, 2669 flow [2023-11-12 02:11:23,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 85.8) internal successors, (1287), 15 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:23,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:23,965 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:23,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-12 02:11:24,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:11:24,172 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)] === [2023-11-12 02:11:24,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:24,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2067778755, now seen corresponding path program 5 times [2023-11-12 02:11:24,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:24,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725990891] [2023-11-12 02:11:24,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:24,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 19 proven. 210 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-12 02:11:24,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:24,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725990891] [2023-11-12 02:11:24,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725990891] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:24,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46021263] [2023-11-12 02:11:24,666 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-12 02:11:24,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:24,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:24,668 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:24,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:11:24,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-11-12 02:11:24,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:11:24,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 02:11:24,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 19 proven. 210 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-12 02:11:25,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:11:25,374 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 19 proven. 210 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-12 02:11:25,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46021263] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:11:25,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:11:25,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2023-11-12 02:11:25,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075267119] [2023-11-12 02:11:25,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:11:25,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-12 02:11:25,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:25,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-12 02:11:25,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-11-12 02:11:25,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 200 [2023-11-12 02:11:25,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 229 transitions, 2669 flow. Second operand has 23 states, 23 states have (on average 85.65217391304348) internal successors, (1970), 23 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:25,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:25,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 200 [2023-11-12 02:11:25,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:26,508 INFO L124 PetriNetUnfolderBase]: 400/1912 cut-off events. [2023-11-12 02:11:26,508 INFO L125 PetriNetUnfolderBase]: For 135245/135245 co-relation queries the response was YES. [2023-11-12 02:11:26,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11283 conditions, 1912 events. 400/1912 cut-off events. For 135245/135245 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 11463 event pairs, 45 based on Foata normal form. 344/2256 useless extension candidates. Maximal degree in co-relation 11215. Up to 491 conditions per place. [2023-11-12 02:11:26,538 INFO L140 encePairwiseOnDemand]: 196/200 looper letters, 382 selfloop transitions, 232 changer transitions 0/615 dead transitions. [2023-11-12 02:11:26,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 615 transitions, 9162 flow [2023-11-12 02:11:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-12 02:11:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-12 02:11:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2007 transitions. [2023-11-12 02:11:26,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4561363636363636 [2023-11-12 02:11:26,544 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2007 transitions. [2023-11-12 02:11:26,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2007 transitions. [2023-11-12 02:11:26,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:26,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2007 transitions. [2023-11-12 02:11:26,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 91.22727272727273) internal successors, (2007), 22 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:26,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 200.0) internal successors, (4600), 23 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:26,562 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 200.0) internal successors, (4600), 23 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:26,563 INFO L175 Difference]: Start difference. First operand has 166 places, 229 transitions, 2669 flow. Second operand 22 states and 2007 transitions. [2023-11-12 02:11:26,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 615 transitions, 9162 flow [2023-11-12 02:11:26,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 615 transitions, 9052 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:11:26,740 INFO L231 Difference]: Finished difference. Result has 191 places, 318 transitions, 4396 flow [2023-11-12 02:11:26,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4396, PETRI_PLACES=191, PETRI_TRANSITIONS=318} [2023-11-12 02:11:26,741 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 169 predicate places. [2023-11-12 02:11:26,742 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 318 transitions, 4396 flow [2023-11-12 02:11:26,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 85.65217391304348) internal successors, (1970), 23 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:26,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:26,743 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:26,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:26,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:11:26,954 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-12 02:11:26,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:26,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1645476757, now seen corresponding path program 6 times [2023-11-12 02:11:26,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:26,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952859687] [2023-11-12 02:11:26,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:26,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 20 proven. 190 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-11-12 02:11:27,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:27,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952859687] [2023-11-12 02:11:27,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952859687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:27,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941495660] [2023-11-12 02:11:27,528 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-12 02:11:27,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:27,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:27,529 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:27,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:11:28,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2023-11-12 02:11:28,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:11:28,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:11:28,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 20 proven. 190 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-11-12 02:11:28,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:11:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 20 proven. 190 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-11-12 02:11:28,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941495660] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:11:28,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:11:28,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2023-11-12 02:11:28,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041241348] [2023-11-12 02:11:28,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:11:28,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-12 02:11:28,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:28,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-12 02:11:28,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-11-12 02:11:28,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 200 [2023-11-12 02:11:28,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 318 transitions, 4396 flow. Second operand has 23 states, 23 states have (on average 89.04347826086956) internal successors, (2048), 23 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:28,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:28,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 200 [2023-11-12 02:11:28,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:30,424 INFO L124 PetriNetUnfolderBase]: 690/3486 cut-off events. [2023-11-12 02:11:30,425 INFO L125 PetriNetUnfolderBase]: For 418978/419010 co-relation queries the response was YES. [2023-11-12 02:11:30,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20775 conditions, 3486 events. 690/3486 cut-off events. For 418978/419010 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 23712 event pairs, 45 based on Foata normal form. 462/3948 useless extension candidates. Maximal degree in co-relation 20698. Up to 921 conditions per place. [2023-11-12 02:11:30,476 INFO L140 encePairwiseOnDemand]: 196/200 looper letters, 671 selfloop transitions, 132 changer transitions 0/804 dead transitions. [2023-11-12 02:11:30,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 804 transitions, 12908 flow [2023-11-12 02:11:30,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-12 02:11:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-12 02:11:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2051 transitions. [2023-11-12 02:11:30,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661363636363636 [2023-11-12 02:11:30,483 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2051 transitions. [2023-11-12 02:11:30,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2051 transitions. [2023-11-12 02:11:30,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:30,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2051 transitions. [2023-11-12 02:11:30,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.22727272727273) internal successors, (2051), 22 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:30,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 200.0) internal successors, (4600), 23 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:30,515 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 200.0) internal successors, (4600), 23 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:30,515 INFO L175 Difference]: Start difference. First operand has 191 places, 318 transitions, 4396 flow. Second operand 22 states and 2051 transitions. [2023-11-12 02:11:30,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 804 transitions, 12908 flow [2023-11-12 02:11:30,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 804 transitions, 12436 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-12 02:11:30,841 INFO L231 Difference]: Finished difference. Result has 212 places, 384 transitions, 5320 flow [2023-11-12 02:11:30,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5320, PETRI_PLACES=212, PETRI_TRANSITIONS=384} [2023-11-12 02:11:30,843 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 190 predicate places. [2023-11-12 02:11:30,843 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 384 transitions, 5320 flow [2023-11-12 02:11:30,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 89.04347826086956) internal successors, (2048), 23 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:30,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:30,844 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:30,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:31,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 02:11:31,053 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-12 02:11:31,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:31,053 INFO L85 PathProgramCache]: Analyzing trace with hash -615005977, now seen corresponding path program 7 times [2023-11-12 02:11:31,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:31,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771765023] [2023-11-12 02:11:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:31,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:37,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:37,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771765023] [2023-11-12 02:11:37,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771765023] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:37,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638533565] [2023-11-12 02:11:37,003 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-12 02:11:37,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:37,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:37,004 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:37,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68131fb6-562a-4ff1-819a-5bb765fbebce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:11:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:37,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 168 conjunts are in the unsatisfiable core [2023-11-12 02:11:37,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:37,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:11:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:37,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638533565] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:11:37,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:11:37,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2023-11-12 02:11:37,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013465867] [2023-11-12 02:11:37,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:11:37,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-11-12 02:11:37,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:37,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-11-12 02:11:37,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2023-11-12 02:11:39,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 200 [2023-11-12 02:11:39,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 384 transitions, 5320 flow. Second operand has 63 states, 63 states have (on average 85.34920634920636) internal successors, (5377), 63 states have internal predecessors, (5377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:39,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:39,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 200 [2023-11-12 02:11:39,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand