./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/10-synch_01-thread_unique.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_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/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_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/10-synch_01-thread_unique.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/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_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/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 1f1f1c8f9ab1c230a124cee5d642a3f2063dd1bf51b20bdb3c19b17194d93f67 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:07:50,599 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:07:50,707 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:07:50,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:07:50,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:07:50,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:07:50,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:07:50,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:07:50,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:07:50,768 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:07:50,769 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:07:50,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:07:50,770 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:07:50,772 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:07:50,773 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:07:50,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:07:50,773 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:07:50,774 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:07:50,774 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:07:50,775 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:07:50,775 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:07:50,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:07:50,776 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:07:50,777 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:07:50,777 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:07:50,778 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:07:50,778 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:07:50,779 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:07:50,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:07:50,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:50,781 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:07:50,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:07:50,782 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:07:50,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:07:50,782 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:07:50,783 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:07:50,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:07:50,783 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:07:50,783 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_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f1f1c8f9ab1c230a124cee5d642a3f2063dd1bf51b20bdb3c19b17194d93f67 [2023-11-12 02:07:51,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:07:51,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:07:51,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:07:51,097 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:07:51,098 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:07:51,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/10-synch_01-thread_unique.i [2023-11-12 02:07:54,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:07:54,595 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:07:54,595 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/sv-benchmarks/c/goblint-regression/10-synch_01-thread_unique.i [2023-11-12 02:07:54,612 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl/data/21f8cc1d6/69f272eec1d641a7bb1bba20aa51ac23/FLAG033679f73 [2023-11-12 02:07:54,628 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl/data/21f8cc1d6/69f272eec1d641a7bb1bba20aa51ac23 [2023-11-12 02:07:54,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:07:54,633 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:07:54,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:54,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:07:54,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:07:54,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:54" (1/1) ... [2023-11-12 02:07:54,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5108fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:54, skipping insertion in model container [2023-11-12 02:07:54,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:54" (1/1) ... [2023-11-12 02:07:54,724 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:07:55,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:55,430 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:07:55,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:55,579 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:07:55,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:55 WrapperNode [2023-11-12 02:07:55,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:55,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:55,582 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:07:55,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:07:55,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:55" (1/1) ... [2023-11-12 02:07:55,621 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:55" (1/1) ... [2023-11-12 02:07:55,655 INFO L138 Inliner]: procedures = 259, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-11-12 02:07:55,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:55,656 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:07:55,656 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:07:55,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:07:55,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:55" (1/1) ... [2023-11-12 02:07:55,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:55" (1/1) ... [2023-11-12 02:07:55,673 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:55" (1/1) ... [2023-11-12 02:07:55,673 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:55" (1/1) ... [2023-11-12 02:07:55,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:55" (1/1) ... [2023-11-12 02:07:55,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:55" (1/1) ... [2023-11-12 02:07:55,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:55" (1/1) ... [2023-11-12 02:07:55,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:55" (1/1) ... [2023-11-12 02:07:55,712 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:07:55,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:07:55,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:07:55,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:07:55,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:55" (1/1) ... [2023-11-12 02:07:55,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:55,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:55,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:07:55,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:07:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:07:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:07:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:07:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:07:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 02:07:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 02:07:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:07:55,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:07:55,810 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 02:07:55,981 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:07:55,983 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:07:56,106 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:07:56,113 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:07:56,113 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:07:56,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:56 BoogieIcfgContainer [2023-11-12 02:07:56,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:07:56,119 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:07:56,119 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:07:56,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:07:56,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:07:54" (1/3) ... [2023-11-12 02:07:56,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c2d8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:56, skipping insertion in model container [2023-11-12 02:07:56,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:55" (2/3) ... [2023-11-12 02:07:56,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c2d8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:56, skipping insertion in model container [2023-11-12 02:07:56,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:56" (3/3) ... [2023-11-12 02:07:56,134 INFO L112 eAbstractionObserver]: Analyzing ICFG 10-synch_01-thread_unique.i [2023-11-12 02:07:56,157 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:07:56,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-12 02:07:56,158 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:07:56,229 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:07:56,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 34 transitions, 75 flow [2023-11-12 02:07:56,299 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-11-12 02:07:56,300 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:07:56,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 33 events. 0/33 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 18 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-12 02:07:56,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 34 transitions, 75 flow [2023-11-12 02:07:56,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 28 transitions, 62 flow [2023-11-12 02:07:56,311 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:07:56,322 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 28 transitions, 62 flow [2023-11-12 02:07:56,327 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 28 transitions, 62 flow [2023-11-12 02:07:56,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 28 transitions, 62 flow [2023-11-12 02:07:56,337 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2023-11-12 02:07:56,338 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:07:56,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 0/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-12 02:07:56,339 INFO L119 LiptonReduction]: Number of co-enabled transitions 40 [2023-11-12 02:07:57,521 INFO L134 LiptonReduction]: Checked pairs total: 57 [2023-11-12 02:07:57,521 INFO L136 LiptonReduction]: Total number of compositions: 26 [2023-11-12 02:07:57,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:07:57,557 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;@53b49e0d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:07:57,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-12 02:07:57,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:07:57,561 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:07:57,562 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:07:57,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:57,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:07:57,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-12 02:07:57,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:57,569 INFO L85 PathProgramCache]: Analyzing trace with hash 129, now seen corresponding path program 1 times [2023-11-12 02:07:57,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:57,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373219087] [2023-11-12 02:07:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:57,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:57,732 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 02:07:57,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:57,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373219087] [2023-11-12 02:07:57,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373219087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:57,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:57,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:07:57,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267919558] [2023-11-12 02:07:57,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:57,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:07:57,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:57,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:07:57,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:07:57,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 60 [2023-11-12 02:07:57,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 26 flow. Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 02:07:57,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:57,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 60 [2023-11-12 02:07:57,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:57,815 INFO L124 PetriNetUnfolderBase]: 3/14 cut-off events. [2023-11-12 02:07:57,815 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:07:57,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 14 events. 3/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 21 event pairs, 3 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 20. Up to 15 conditions per place. [2023-11-12 02:07:57,818 INFO L140 encePairwiseOnDemand]: 58/60 looper letters, 8 selfloop transitions, 0 changer transitions 0/8 dead transitions. [2023-11-12 02:07:57,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 8 transitions, 38 flow [2023-11-12 02:07:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:07:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:07:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 74 transitions. [2023-11-12 02:07:57,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2023-11-12 02:07:57,837 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 74 transitions. [2023-11-12 02:07:57,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 74 transitions. [2023-11-12 02:07:57,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:57,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 74 transitions. [2023-11-12 02:07:57,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 02:07:57,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 02:07:57,852 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 02:07:57,855 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 26 flow. Second operand 2 states and 74 transitions. [2023-11-12 02:07:57,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 8 transitions, 38 flow [2023-11-12 02:07:57,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:57,861 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 18 flow [2023-11-12 02:07:57,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=18, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2023-11-12 02:07:57,868 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -3 predicate places. [2023-11-12 02:07:57,868 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 18 flow [2023-11-12 02:07:57,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 02:07:57,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:57,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:07:57,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:07:57,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-12 02:07:57,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash 127282, now seen corresponding path program 1 times [2023-11-12 02:07:57,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:57,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206976164] [2023-11-12 02:07:57,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:57,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:58,091 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 02:07:58,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:58,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206976164] [2023-11-12 02:07:58,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206976164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:58,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:58,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:07:58,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321791651] [2023-11-12 02:07:58,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:58,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:58,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:58,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:58,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:58,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 60 [2023-11-12 02:07:58,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 18 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 02:07:58,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:58,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 60 [2023-11-12 02:07:58,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:58,161 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-11-12 02:07:58,161 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:07:58,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 11 event pairs, 2 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 23. Up to 10 conditions per place. [2023-11-12 02:07:58,162 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 5 selfloop transitions, 2 changer transitions 0/7 dead transitions. [2023-11-12 02:07:58,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 30 flow [2023-11-12 02:07:58,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2023-11-12 02:07:58,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2023-11-12 02:07:58,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 77 transitions. [2023-11-12 02:07:58,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 77 transitions. [2023-11-12 02:07:58,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:58,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 77 transitions. [2023-11-12 02:07:58,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 02:07:58,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 02:07:58,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 02:07:58,173 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 18 flow. Second operand 3 states and 77 transitions. [2023-11-12 02:07:58,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 30 flow [2023-11-12 02:07:58,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:07:58,176 INFO L231 Difference]: Finished difference. Result has 12 places, 7 transitions, 20 flow [2023-11-12 02:07:58,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20, PETRI_PLACES=12, PETRI_TRANSITIONS=7} [2023-11-12 02:07:58,178 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -2 predicate places. [2023-11-12 02:07:58,178 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 7 transitions, 20 flow [2023-11-12 02:07:58,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 02:07:58,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:58,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:07:58,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:07:58,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-12 02:07:58,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash 127283, now seen corresponding path program 1 times [2023-11-12 02:07:58,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:58,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285242675] [2023-11-12 02:07:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:58,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:58,278 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 02:07:58,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:58,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285242675] [2023-11-12 02:07:58,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285242675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:58,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:58,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:07:58,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838580016] [2023-11-12 02:07:58,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:58,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:58,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:58,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:58,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:58,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2023-11-12 02:07:58,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 7 transitions, 20 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 02:07:58,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:58,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2023-11-12 02:07:58,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:58,321 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-12 02:07:58,321 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:07:58,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 8 events. 1/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 1 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 19. Up to 7 conditions per place. [2023-11-12 02:07:58,321 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 4 selfloop transitions, 2 changer transitions 0/6 dead transitions. [2023-11-12 02:07:58,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 6 transitions, 30 flow [2023-11-12 02:07:58,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:58,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2023-11-12 02:07:58,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-11-12 02:07:58,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 85 transitions. [2023-11-12 02:07:58,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 85 transitions. [2023-11-12 02:07:58,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:58,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 85 transitions. [2023-11-12 02:07:58,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 02:07:58,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 02:07:58,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 02:07:58,327 INFO L175 Difference]: Start difference. First operand has 12 places, 7 transitions, 20 flow. Second operand 3 states and 85 transitions. [2023-11-12 02:07:58,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 6 transitions, 30 flow [2023-11-12 02:07:58,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:58,328 INFO L231 Difference]: Finished difference. Result has 11 places, 6 transitions, 18 flow [2023-11-12 02:07:58,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=18, PETRI_PLACES=11, PETRI_TRANSITIONS=6} [2023-11-12 02:07:58,329 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -3 predicate places. [2023-11-12 02:07:58,329 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 6 transitions, 18 flow [2023-11-12 02:07:58,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 02:07:58,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:58,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:07:58,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:07:58,330 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-12 02:07:58,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:58,331 INFO L85 PathProgramCache]: Analyzing trace with hash -502873321, now seen corresponding path program 1 times [2023-11-12 02:07:58,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:58,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79116107] [2023-11-12 02:07:58,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:58,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:58,530 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 02:07:58,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:58,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79116107] [2023-11-12 02:07:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79116107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:58,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:58,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:07:58,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111242190] [2023-11-12 02:07:58,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:58,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:58,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:58,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:58,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:58,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 60 [2023-11-12 02:07:58,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 6 transitions, 18 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 02:07:58,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:58,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 60 [2023-11-12 02:07:58,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:58,594 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-11-12 02:07:58,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:07:58,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 7 events. 1/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 1 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 16. Up to 7 conditions per place. [2023-11-12 02:07:58,595 INFO L140 encePairwiseOnDemand]: 58/60 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2023-11-12 02:07:58,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 5 transitions, 24 flow [2023-11-12 02:07:58,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:58,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-12 02:07:58,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2023-11-12 02:07:58,600 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-12 02:07:58,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-12 02:07:58,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:58,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-12 02:07:58,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 02:07:58,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 02:07:58,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 02:07:58,604 INFO L175 Difference]: Start difference. First operand has 11 places, 6 transitions, 18 flow. Second operand 3 states and 87 transitions. [2023-11-12 02:07:58,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 5 transitions, 24 flow [2023-11-12 02:07:58,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 5 transitions, 23 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:58,605 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2023-11-12 02:07:58,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=13, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2023-11-12 02:07:58,607 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -3 predicate places. [2023-11-12 02:07:58,607 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2023-11-12 02:07:58,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 02:07:58,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-11-12 02:07:58,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-11-12 02:07:58,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-11-12 02:07:58,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-11-12 02:07:58,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-11-12 02:07:58,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-11-12 02:07:58,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:07:58,613 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-12 02:07:58,619 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:07:58,619 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:07:58,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:07:58 BasicIcfg [2023-11-12 02:07:58,629 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:07:58,630 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:07:58,630 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:07:58,631 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:07:58,631 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:56" (3/4) ... [2023-11-12 02:07:58,634 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:07:58,639 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-12 02:07:58,645 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-12 02:07:58,645 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:07:58,645 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:07:58,736 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:07:58,737 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:07:58,737 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:07:58,739 INFO L158 Benchmark]: Toolchain (without parser) took 4104.86ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 86.1MB in the beginning and 83.3MB in the end (delta: 2.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-12 02:07:58,744 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 130.0MB. Free memory is still 101.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:07:58,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 945.92ms. Allocated memory is still 130.0MB. Free memory was 86.1MB in the beginning and 59.6MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-12 02:07:58,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.16ms. Allocated memory is still 130.0MB. Free memory was 59.6MB in the beginning and 57.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:07:58,746 INFO L158 Benchmark]: Boogie Preprocessor took 56.41ms. Allocated memory is still 130.0MB. Free memory was 57.6MB in the beginning and 56.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:07:58,746 INFO L158 Benchmark]: RCFGBuilder took 402.27ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 56.2MB in the beginning and 132.9MB in the end (delta: -76.7MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2023-11-12 02:07:58,747 INFO L158 Benchmark]: TraceAbstraction took 2510.56ms. Allocated memory is still 165.7MB. Free memory was 132.9MB in the beginning and 86.4MB in the end (delta: 46.5MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2023-11-12 02:07:58,747 INFO L158 Benchmark]: Witness Printer took 106.81ms. Allocated memory is still 165.7MB. Free memory was 86.4MB in the beginning and 83.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:07:58,752 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 130.0MB. Free memory is still 101.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 945.92ms. Allocated memory is still 130.0MB. Free memory was 86.1MB in the beginning and 59.6MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.16ms. Allocated memory is still 130.0MB. Free memory was 59.6MB in the beginning and 57.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.41ms. Allocated memory is still 130.0MB. Free memory was 57.6MB in the beginning and 56.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 402.27ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 56.2MB in the beginning and 132.9MB in the end (delta: -76.7MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2510.56ms. Allocated memory is still 165.7MB. Free memory was 132.9MB in the beginning and 86.4MB in the end (delta: 46.5MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. * Witness Printer took 106.81ms. Allocated memory is still 165.7MB. Free memory was 86.4MB in the beginning and 83.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 32 PlacesBefore, 14 PlacesAfterwards, 28 TransitionsBefore, 10 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 26 TotalNumberOfCompositions, 57 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 57, independent: 57, independent conditional: 0, independent unconditional: 57, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 26, independent: 26, independent conditional: 0, independent unconditional: 26, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 57, independent: 31, independent conditional: 0, independent unconditional: 31, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 26, unknown conditional: 0, unknown unconditional: 26] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 922]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 41 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 105 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 98 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 16 mSDtfsCounter, 98 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 58 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:07:58,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47610bc-1375-4591-9a1a-8b6b9eac2dd6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE