./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:52:54,631 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:52:54,707 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:52:54,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:52:54,716 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:52:54,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:52:54,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:52:54,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:52:54,765 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:52:54,766 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:52:54,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:52:54,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:52:54,768 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:52:54,768 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:52:54,769 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:52:54,769 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:52:54,770 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:52:54,771 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:52:54,771 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:52:54,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:52:54,783 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:52:54,788 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:52:54,789 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:52:54,789 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:52:54,790 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:52:54,790 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:52:54,791 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:52:54,791 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:52:54,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:52:54,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:52:54,793 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:52:54,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:52:54,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:54,794 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:52:54,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:52:54,795 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:52:54,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:52:54,795 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:52:54,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:52:54,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:52:54,796 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:52:54,797 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_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 [2023-11-26 11:52:55,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:52:55,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:52:55,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:52:55,053 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:52:55,053 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:52:55,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2023-11-26 11:52:58,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:52:58,573 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:52:58,574 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2023-11-26 11:52:58,585 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/data/1cafd9b0b/5fa200913de64d428e7d6cfa7e9d2ca8/FLAG3d317355b [2023-11-26 11:52:58,603 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/data/1cafd9b0b/5fa200913de64d428e7d6cfa7e9d2ca8 [2023-11-26 11:52:58,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:52:58,609 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:52:58,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:58,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:52:58,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:52:58,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:58,626 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aee8519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58, skipping insertion in model container [2023-11-26 11:52:58,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:58,652 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:52:58,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:58,912 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:52:58,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:58,980 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:52:58,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58 WrapperNode [2023-11-26 11:52:58,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:58,982 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:58,982 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:52:58,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:52:58,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:59,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:59,043 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 215 [2023-11-26 11:52:59,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:59,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:52:59,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:52:59,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:52:59,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:59,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:59,062 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:59,080 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-26 11:52:59,081 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:59,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:59,092 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:59,095 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:59,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:59,112 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:59,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:52:59,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:52:59,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:52:59,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:52:59,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58" (1/1) ... [2023-11-26 11:52:59,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:59,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:59,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:52:59,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:52:59,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:52:59,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:52:59,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:52:59,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:52:59,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:52:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 11:52:59,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 11:52:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:52:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:52:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:52:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:52:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:52:59,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:52:59,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:52:59,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:52:59,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:52:59,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:52:59,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:52:59,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:52:59,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:52:59,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:52:59,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:52:59,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:52:59,218 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:52:59,351 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:52:59,353 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:52:59,837 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:53:00,281 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:53:00,281 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:53:00,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:00 BoogieIcfgContainer [2023-11-26 11:53:00,282 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:53:00,285 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:53:00,285 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:53:00,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:53:00,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:52:58" (1/3) ... [2023-11-26 11:53:00,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d7696b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:00, skipping insertion in model container [2023-11-26 11:53:00,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:58" (2/3) ... [2023-11-26 11:53:00,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d7696b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:00, skipping insertion in model container [2023-11-26 11:53:00,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:00" (3/3) ... [2023-11-26 11:53:00,292 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2023-11-26 11:53:00,317 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:53:00,317 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-26 11:53:00,318 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:53:00,417 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 11:53:00,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 103 flow [2023-11-26 11:53:00,489 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2023-11-26 11:53:00,489 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:53:00,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 0/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 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. [2023-11-26 11:53:00,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 103 flow [2023-11-26 11:53:00,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 37 transitions, 92 flow [2023-11-26 11:53:00,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:00,513 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;@6fe51141, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:00,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-26 11:53:00,517 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:53:00,517 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 11:53:00,517 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:00,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:00,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:53:00,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 11:53:00,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:00,524 INFO L85 PathProgramCache]: Analyzing trace with hash 22315, now seen corresponding path program 1 times [2023-11-26 11:53:00,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:00,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500672817] [2023-11-26 11:53:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:00,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:00,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:00,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500672817] [2023-11-26 11:53:00,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500672817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:00,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:00,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:53:00,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872612156] [2023-11-26 11:53:00,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:00,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:00,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:01,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:01,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:01,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 41 [2023-11-26 11:53:01,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2023-11-26 11:53:01,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:01,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 41 [2023-11-26 11:53:01,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:01,129 INFO L124 PetriNetUnfolderBase]: 44/135 cut-off events. [2023-11-26 11:53:01,129 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-26 11:53:01,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 135 events. 44/135 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 393 event pairs, 44 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 196. Up to 90 conditions per place. [2023-11-26 11:53:01,134 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 15 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-26 11:53:01,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 116 flow [2023-11-26 11:53:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2023-11-26 11:53:01,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-26 11:53:01,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 82 transitions. [2023-11-26 11:53:01,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 82 transitions. [2023-11-26 11:53:01,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:01,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 82 transitions. [2023-11-26 11:53:01,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:01,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:01,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:01,162 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 92 flow. Second operand 3 states and 82 transitions. [2023-11-26 11:53:01,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 116 flow [2023-11-26 11:53:01,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 104 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 11:53:01,169 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 74 flow [2023-11-26 11:53:01,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-11-26 11:53:01,175 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -8 predicate places. [2023-11-26 11:53:01,175 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 74 flow [2023-11-26 11:53:01,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2023-11-26 11:53:01,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:01,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:53:01,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:53:01,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 11:53:01,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:01,178 INFO L85 PathProgramCache]: Analyzing trace with hash 22316, now seen corresponding path program 1 times [2023-11-26 11:53:01,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:01,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071406031] [2023-11-26 11:53:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:01,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:01,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:01,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071406031] [2023-11-26 11:53:01,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071406031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:01,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:01,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:53:01,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046428856] [2023-11-26 11:53:01,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:01,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:01,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:01,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:01,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:01,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-26 11:53:01,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:01,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:01,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-26 11:53:01,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:01,565 INFO L124 PetriNetUnfolderBase]: 32/102 cut-off events. [2023-11-26 11:53:01,565 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2023-11-26 11:53:01,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 102 events. 32/102 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 267 event pairs, 32 based on Foata normal form. 9/91 useless extension candidates. Maximal degree in co-relation 176. Up to 69 conditions per place. [2023-11-26 11:53:01,568 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 13 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-11-26 11:53:01,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 98 flow [2023-11-26 11:53:01,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2023-11-26 11:53:01,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6910569105691057 [2023-11-26 11:53:01,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 85 transitions. [2023-11-26 11:53:01,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 85 transitions. [2023-11-26 11:53:01,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:01,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 85 transitions. [2023-11-26 11:53:01,576 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) [2023-11-26 11:53:01,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:01,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:01,582 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 74 flow. Second operand 3 states and 85 transitions. [2023-11-26 11:53:01,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 98 flow [2023-11-26 11:53:01,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:01,587 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 71 flow [2023-11-26 11:53:01,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-26 11:53:01,588 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -9 predicate places. [2023-11-26 11:53:01,589 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 71 flow [2023-11-26 11:53:01,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:01,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:01,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:53:01,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:53:01,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 11:53:01,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:01,594 INFO L85 PathProgramCache]: Analyzing trace with hash 665427780, now seen corresponding path program 1 times [2023-11-26 11:53:01,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:01,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579756090] [2023-11-26 11:53:01,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:01,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:01,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:01,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579756090] [2023-11-26 11:53:01,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579756090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:01,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:01,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:53:01,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524397134] [2023-11-26 11:53:01,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:01,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:01,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:01,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:01,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:01,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 41 [2023-11-26 11:53:01,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:01,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:01,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 41 [2023-11-26 11:53:01,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:01,831 INFO L124 PetriNetUnfolderBase]: 37/119 cut-off events. [2023-11-26 11:53:01,831 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-26 11:53:01,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 119 events. 37/119 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 314 event pairs, 37 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 204. Up to 80 conditions per place. [2023-11-26 11:53:01,833 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 15 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-26 11:53:01,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 99 flow [2023-11-26 11:53:01,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:01,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:01,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2023-11-26 11:53:01,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2023-11-26 11:53:01,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2023-11-26 11:53:01,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2023-11-26 11:53:01,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:01,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2023-11-26 11:53:01,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-26 11:53:01,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:01,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:01,840 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 71 flow. Second operand 3 states and 81 transitions. [2023-11-26 11:53:01,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 99 flow [2023-11-26 11:53:01,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:01,844 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 68 flow [2023-11-26 11:53:01,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-11-26 11:53:01,845 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -10 predicate places. [2023-11-26 11:53:01,846 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 68 flow [2023-11-26 11:53:01,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:01,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:01,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:53:01,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:53:01,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 11:53:01,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash 665427781, now seen corresponding path program 1 times [2023-11-26 11:53:01,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:01,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391498230] [2023-11-26 11:53:01,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:01,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:01,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:01,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391498230] [2023-11-26 11:53:01,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391498230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:01,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:01,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:53:01,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815966621] [2023-11-26 11:53:01,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:01,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:01,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:01,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:01,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:01,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-26 11:53:01,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:01,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:01,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-26 11:53:01,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:02,027 INFO L124 PetriNetUnfolderBase]: 32/108 cut-off events. [2023-11-26 11:53:02,028 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 11:53:02,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 108 events. 32/108 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 282 event pairs, 32 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 182. Up to 69 conditions per place. [2023-11-26 11:53:02,029 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 13 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-11-26 11:53:02,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 92 flow [2023-11-26 11:53:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2023-11-26 11:53:02,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6910569105691057 [2023-11-26 11:53:02,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 85 transitions. [2023-11-26 11:53:02,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 85 transitions. [2023-11-26 11:53:02,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:02,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 85 transitions. [2023-11-26 11:53:02,035 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) [2023-11-26 11:53:02,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:02,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:02,037 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 68 flow. Second operand 3 states and 85 transitions. [2023-11-26 11:53:02,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 92 flow [2023-11-26 11:53:02,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:02,038 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 65 flow [2023-11-26 11:53:02,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-11-26 11:53:02,041 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -11 predicate places. [2023-11-26 11:53:02,041 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 65 flow [2023-11-26 11:53:02,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:02,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:02,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:02,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:53:02,043 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 11:53:02,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:02,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1809405061, now seen corresponding path program 1 times [2023-11-26 11:53:02,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:02,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10460444] [2023-11-26 11:53:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:02,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:02,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:02,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10460444] [2023-11-26 11:53:02,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10460444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:02,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:02,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:53:02,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027277590] [2023-11-26 11:53:02,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:02,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:02,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:02,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:02,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:02,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-26 11:53:02,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:02,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:02,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-26 11:53:02,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:02,242 INFO L124 PetriNetUnfolderBase]: 32/102 cut-off events. [2023-11-26 11:53:02,243 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 11:53:02,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 102 events. 32/102 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 250 event pairs, 32 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 176. Up to 69 conditions per place. [2023-11-26 11:53:02,247 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 13 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-11-26 11:53:02,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 25 transitions, 89 flow [2023-11-26 11:53:02,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:02,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:02,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2023-11-26 11:53:02,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6910569105691057 [2023-11-26 11:53:02,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 85 transitions. [2023-11-26 11:53:02,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 85 transitions. [2023-11-26 11:53:02,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:02,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 85 transitions. [2023-11-26 11:53:02,250 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) [2023-11-26 11:53:02,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:02,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:02,252 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 65 flow. Second operand 3 states and 85 transitions. [2023-11-26 11:53:02,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 25 transitions, 89 flow [2023-11-26 11:53:02,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:02,254 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 62 flow [2023-11-26 11:53:02,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-11-26 11:53:02,255 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -12 predicate places. [2023-11-26 11:53:02,255 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 62 flow [2023-11-26 11:53:02,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:02,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:02,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:02,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:53:02,256 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 11:53:02,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:02,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1809405062, now seen corresponding path program 1 times [2023-11-26 11:53:02,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:02,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200523392] [2023-11-26 11:53:02,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:02,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:02,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:02,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200523392] [2023-11-26 11:53:02,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200523392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:02,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:02,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:53:02,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889433463] [2023-11-26 11:53:02,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:02,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:02,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:02,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:02,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:02,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 41 [2023-11-26 11:53:02,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:02,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:02,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 41 [2023-11-26 11:53:02,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:02,407 INFO L124 PetriNetUnfolderBase]: 37/101 cut-off events. [2023-11-26 11:53:02,407 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:53:02,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 101 events. 37/101 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 218 event pairs, 37 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 186. Up to 80 conditions per place. [2023-11-26 11:53:02,410 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 15 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-11-26 11:53:02,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 90 flow [2023-11-26 11:53:02,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:02,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2023-11-26 11:53:02,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2023-11-26 11:53:02,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2023-11-26 11:53:02,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2023-11-26 11:53:02,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:02,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2023-11-26 11:53:02,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-26 11:53:02,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:02,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:02,414 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 62 flow. Second operand 3 states and 81 transitions. [2023-11-26 11:53:02,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 90 flow [2023-11-26 11:53:02,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 89 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:02,416 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 59 flow [2023-11-26 11:53:02,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-11-26 11:53:02,417 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -13 predicate places. [2023-11-26 11:53:02,418 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 59 flow [2023-11-26 11:53:02,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:02,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:02,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:02,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:53:02,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 11:53:02,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:02,419 INFO L85 PathProgramCache]: Analyzing trace with hash -108838514, now seen corresponding path program 1 times [2023-11-26 11:53:02,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:02,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876289917] [2023-11-26 11:53:02,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:02,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:03,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:03,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876289917] [2023-11-26 11:53:03,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876289917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:03,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:03,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:53:03,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704225846] [2023-11-26 11:53:03,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:03,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:53:03,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:03,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:53:03,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:03,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-26 11:53:03,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:03,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:03,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-26 11:53:03,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:03,295 INFO L124 PetriNetUnfolderBase]: 33/118 cut-off events. [2023-11-26 11:53:03,295 INFO L125 PetriNetUnfolderBase]: For 15/17 co-relation queries the response was YES. [2023-11-26 11:53:03,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 118 events. 33/118 cut-off events. For 15/17 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 365 event pairs, 6 based on Foata normal form. 3/121 useless extension candidates. Maximal degree in co-relation 211. Up to 39 conditions per place. [2023-11-26 11:53:03,297 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 26 selfloop transitions, 6 changer transitions 7/48 dead transitions. [2023-11-26 11:53:03,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 197 flow [2023-11-26 11:53:03,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:53:03,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:53:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2023-11-26 11:53:03,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7723577235772358 [2023-11-26 11:53:03,298 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 190 transitions. [2023-11-26 11:53:03,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 190 transitions. [2023-11-26 11:53:03,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:03,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 190 transitions. [2023-11-26 11:53:03,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:03,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:03,302 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:03,302 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 59 flow. Second operand 6 states and 190 transitions. [2023-11-26 11:53:03,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 197 flow [2023-11-26 11:53:03,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 48 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:03,304 INFO L231 Difference]: Finished difference. Result has 41 places, 27 transitions, 91 flow [2023-11-26 11:53:03,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2023-11-26 11:53:03,305 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -6 predicate places. [2023-11-26 11:53:03,305 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 91 flow [2023-11-26 11:53:03,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:03,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:03,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:03,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:53:03,306 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 11:53:03,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:03,307 INFO L85 PathProgramCache]: Analyzing trace with hash 315741656, now seen corresponding path program 2 times [2023-11-26 11:53:03,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:03,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780838453] [2023-11-26 11:53:03,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:03,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:03,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:03,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780838453] [2023-11-26 11:53:03,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780838453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:03,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:03,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:53:03,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666844430] [2023-11-26 11:53:03,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:03,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:53:03,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:03,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:53:03,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:03,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-26 11:53:03,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:03,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:03,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-26 11:53:03,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:04,174 INFO L124 PetriNetUnfolderBase]: 30/129 cut-off events. [2023-11-26 11:53:04,175 INFO L125 PetriNetUnfolderBase]: For 75/78 co-relation queries the response was YES. [2023-11-26 11:53:04,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 129 events. 30/129 cut-off events. For 75/78 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 456 event pairs, 6 based on Foata normal form. 4/132 useless extension candidates. Maximal degree in co-relation 294. Up to 50 conditions per place. [2023-11-26 11:53:04,177 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 24 selfloop transitions, 5 changer transitions 8/46 dead transitions. [2023-11-26 11:53:04,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 221 flow [2023-11-26 11:53:04,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:53:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:53:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2023-11-26 11:53:04,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7642276422764228 [2023-11-26 11:53:04,179 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2023-11-26 11:53:04,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2023-11-26 11:53:04,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:04,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2023-11-26 11:53:04,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:04,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:04,183 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:04,183 INFO L175 Difference]: Start difference. First operand has 41 places, 27 transitions, 91 flow. Second operand 6 states and 188 transitions. [2023-11-26 11:53:04,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 221 flow [2023-11-26 11:53:04,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 217 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:04,188 INFO L231 Difference]: Finished difference. Result has 47 places, 27 transitions, 109 flow [2023-11-26 11:53:04,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=47, PETRI_TRANSITIONS=27} [2023-11-26 11:53:04,191 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2023-11-26 11:53:04,192 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 27 transitions, 109 flow [2023-11-26 11:53:04,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:04,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:04,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:04,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:53:04,193 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 11:53:04,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:04,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2113963968, now seen corresponding path program 3 times [2023-11-26 11:53:04,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:04,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368534095] [2023-11-26 11:53:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:04,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:04,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:04,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368534095] [2023-11-26 11:53:04,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368534095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:04,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:04,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:53:04,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712834910] [2023-11-26 11:53:04,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:04,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:53:04,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:04,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:53:04,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:04,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-26 11:53:04,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 27 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:04,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:04,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-26 11:53:04,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:04,909 INFO L124 PetriNetUnfolderBase]: 17/82 cut-off events. [2023-11-26 11:53:04,910 INFO L125 PetriNetUnfolderBase]: For 99/102 co-relation queries the response was YES. [2023-11-26 11:53:04,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 82 events. 17/82 cut-off events. For 99/102 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 207 event pairs, 2 based on Foata normal form. 3/85 useless extension candidates. Maximal degree in co-relation 211. Up to 20 conditions per place. [2023-11-26 11:53:04,911 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 20 selfloop transitions, 6 changer transitions 6/41 dead transitions. [2023-11-26 11:53:04,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 216 flow [2023-11-26 11:53:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:53:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:53:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2023-11-26 11:53:04,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7658536585365854 [2023-11-26 11:53:04,913 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 157 transitions. [2023-11-26 11:53:04,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 157 transitions. [2023-11-26 11:53:04,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:04,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 157 transitions. [2023-11-26 11:53:04,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:04,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:04,915 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:04,916 INFO L175 Difference]: Start difference. First operand has 47 places, 27 transitions, 109 flow. Second operand 5 states and 157 transitions. [2023-11-26 11:53:04,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 216 flow [2023-11-26 11:53:04,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 194 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-26 11:53:04,919 INFO L231 Difference]: Finished difference. Result has 46 places, 27 transitions, 109 flow [2023-11-26 11:53:04,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2023-11-26 11:53:04,920 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-11-26 11:53:04,920 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 109 flow [2023-11-26 11:53:04,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:04,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:04,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:04,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:53:04,921 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 11:53:04,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:04,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1855971568, now seen corresponding path program 4 times [2023-11-26 11:53:04,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:04,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106235208] [2023-11-26 11:53:04,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:04,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:05,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:05,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106235208] [2023-11-26 11:53:05,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106235208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:05,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:05,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:53:05,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433484795] [2023-11-26 11:53:05,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:05,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:53:05,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:05,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:53:05,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:05,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-26 11:53:05,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:05,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:05,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-26 11:53:05,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:05,552 INFO L124 PetriNetUnfolderBase]: 14/83 cut-off events. [2023-11-26 11:53:05,552 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-26 11:53:05,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 83 events. 14/83 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 232 event pairs, 2 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 213. Up to 34 conditions per place. [2023-11-26 11:53:05,553 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 14 selfloop transitions, 5 changer transitions 7/35 dead transitions. [2023-11-26 11:53:05,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 35 transitions, 187 flow [2023-11-26 11:53:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:53:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:53:05,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2023-11-26 11:53:05,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7317073170731707 [2023-11-26 11:53:05,555 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 150 transitions. [2023-11-26 11:53:05,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 150 transitions. [2023-11-26 11:53:05,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:05,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 150 transitions. [2023-11-26 11:53:05,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:05,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:05,558 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:05,558 INFO L175 Difference]: Start difference. First operand has 46 places, 27 transitions, 109 flow. Second operand 5 states and 150 transitions. [2023-11-26 11:53:05,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 35 transitions, 187 flow [2023-11-26 11:53:05,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 35 transitions, 176 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-26 11:53:05,561 INFO L231 Difference]: Finished difference. Result has 48 places, 25 transitions, 107 flow [2023-11-26 11:53:05,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=48, PETRI_TRANSITIONS=25} [2023-11-26 11:53:05,566 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2023-11-26 11:53:05,566 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 25 transitions, 107 flow [2023-11-26 11:53:05,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:05,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:05,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:05,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:53:05,567 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 11:53:05,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:05,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1279826510, now seen corresponding path program 5 times [2023-11-26 11:53:05,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:05,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264529101] [2023-11-26 11:53:05,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:05,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:06,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:06,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264529101] [2023-11-26 11:53:06,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264529101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:06,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:06,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:53:06,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111627025] [2023-11-26 11:53:06,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:06,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:53:06,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:06,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:53:06,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:06,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-26 11:53:06,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 25 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:06,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:06,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-26 11:53:06,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:06,288 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2023-11-26 11:53:06,288 INFO L125 PetriNetUnfolderBase]: For 27/28 co-relation queries the response was YES. [2023-11-26 11:53:06,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 44 events. 6/44 cut-off events. For 27/28 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 2/46 useless extension candidates. Maximal degree in co-relation 119. Up to 11 conditions per place. [2023-11-26 11:53:06,289 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 14 selfloop transitions, 3 changer transitions 6/32 dead transitions. [2023-11-26 11:53:06,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 32 transitions, 171 flow [2023-11-26 11:53:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:53:06,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:53:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2023-11-26 11:53:06,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7032520325203252 [2023-11-26 11:53:06,292 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 173 transitions. [2023-11-26 11:53:06,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 173 transitions. [2023-11-26 11:53:06,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:06,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 173 transitions. [2023-11-26 11:53:06,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:06,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:06,295 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:06,295 INFO L175 Difference]: Start difference. First operand has 48 places, 25 transitions, 107 flow. Second operand 6 states and 173 transitions. [2023-11-26 11:53:06,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 32 transitions, 171 flow [2023-11-26 11:53:06,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 32 transitions, 145 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-26 11:53:06,298 INFO L231 Difference]: Finished difference. Result has 46 places, 23 transitions, 79 flow [2023-11-26 11:53:06,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=46, PETRI_TRANSITIONS=23} [2023-11-26 11:53:06,299 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-11-26 11:53:06,300 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 23 transitions, 79 flow [2023-11-26 11:53:06,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:06,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:06,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:06,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:53:06,301 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 11:53:06,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:06,302 INFO L85 PathProgramCache]: Analyzing trace with hash 341189050, now seen corresponding path program 6 times [2023-11-26 11:53:06,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:06,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703467286] [2023-11-26 11:53:06,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:06,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:06,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:06,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703467286] [2023-11-26 11:53:06,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703467286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:06,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:06,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:53:06,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525628355] [2023-11-26 11:53:06,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:06,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:53:06,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:06,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:53:06,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:06,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-26 11:53:06,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 23 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:06,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:06,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-26 11:53:06,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:06,838 INFO L124 PetriNetUnfolderBase]: 4/29 cut-off events. [2023-11-26 11:53:06,838 INFO L125 PetriNetUnfolderBase]: For 14/15 co-relation queries the response was YES. [2023-11-26 11:53:06,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 29 events. 4/29 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 83. Up to 7 conditions per place. [2023-11-26 11:53:06,839 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-11-26 11:53:06,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 25 transitions, 116 flow [2023-11-26 11:53:06,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:53:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:53:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2023-11-26 11:53:06,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2023-11-26 11:53:06,841 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 168 transitions. [2023-11-26 11:53:06,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 168 transitions. [2023-11-26 11:53:06,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:06,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 168 transitions. [2023-11-26 11:53:06,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:06,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:06,846 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:06,846 INFO L175 Difference]: Start difference. First operand has 46 places, 23 transitions, 79 flow. Second operand 6 states and 168 transitions. [2023-11-26 11:53:06,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 25 transitions, 116 flow [2023-11-26 11:53:06,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 25 transitions, 100 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-26 11:53:06,848 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-11-26 11:53:06,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-11-26 11:53:06,850 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -6 predicate places. [2023-11-26 11:53:06,851 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-11-26 11:53:06,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:06,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-26 11:53:06,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-26 11:53:06,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-26 11:53:06,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-26 11:53:06,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-26 11:53:06,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-26 11:53:06,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-26 11:53:06,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-26 11:53:06,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-26 11:53:06,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-26 11:53:06,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-26 11:53:06,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-26 11:53:06,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-11-26 11:53:06,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-11-26 11:53:06,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-11-26 11:53:06,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-11-26 11:53:06,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-11-26 11:53:06,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:53:06,859 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:06,863 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:53:06,863 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:53:06,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:53:06 BasicIcfg [2023-11-26 11:53:06,871 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:53:06,872 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:53:06,872 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:53:06,872 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:53:06,873 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:00" (3/4) ... [2023-11-26 11:53:06,875 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:53:06,878 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-26 11:53:06,879 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-26 11:53:06,879 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-26 11:53:06,889 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 95 nodes and edges [2023-11-26 11:53:06,889 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-26 11:53:06,890 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-26 11:53:06,890 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 11:53:07,015 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:53:07,016 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:53:07,016 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:53:07,017 INFO L158 Benchmark]: Toolchain (without parser) took 8407.90ms. Allocated memory was 155.2MB in the beginning and 352.3MB in the end (delta: 197.1MB). Free memory was 110.7MB in the beginning and 133.7MB in the end (delta: -23.0MB). Peak memory consumption was 175.4MB. Max. memory is 16.1GB. [2023-11-26 11:53:07,017 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 113.2MB. Free memory is still 66.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:53:07,017 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.05ms. Allocated memory is still 155.2MB. Free memory was 110.7MB in the beginning and 98.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 11:53:07,018 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.39ms. Allocated memory is still 155.2MB. Free memory was 98.6MB in the beginning and 96.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:53:07,018 INFO L158 Benchmark]: Boogie Preprocessor took 83.67ms. Allocated memory is still 155.2MB. Free memory was 96.1MB in the beginning and 93.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:53:07,019 INFO L158 Benchmark]: RCFGBuilder took 1153.56ms. Allocated memory is still 155.2MB. Free memory was 93.0MB in the beginning and 62.5MB in the end (delta: 30.5MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2023-11-26 11:53:07,019 INFO L158 Benchmark]: TraceAbstraction took 6586.66ms. Allocated memory was 155.2MB in the beginning and 352.3MB in the end (delta: 197.1MB). Free memory was 61.8MB in the beginning and 138.9MB in the end (delta: -77.1MB). Peak memory consumption was 120.4MB. Max. memory is 16.1GB. [2023-11-26 11:53:07,020 INFO L158 Benchmark]: Witness Printer took 144.11ms. Allocated memory is still 352.3MB. Free memory was 138.9MB in the beginning and 133.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:53:07,022 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 113.2MB. Free memory is still 66.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 371.05ms. Allocated memory is still 155.2MB. Free memory was 110.7MB in the beginning and 98.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.39ms. Allocated memory is still 155.2MB. Free memory was 98.6MB in the beginning and 96.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.67ms. Allocated memory is still 155.2MB. Free memory was 96.1MB in the beginning and 93.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1153.56ms. Allocated memory is still 155.2MB. Free memory was 93.0MB in the beginning and 62.5MB in the end (delta: 30.5MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6586.66ms. Allocated memory was 155.2MB in the beginning and 352.3MB in the end (delta: 197.1MB). Free memory was 61.8MB in the beginning and 138.9MB in the end (delta: -77.1MB). Peak memory consumption was 120.4MB. Max. memory is 16.1GB. * Witness Printer took 144.11ms. Allocated memory is still 352.3MB. Free memory was 138.9MB in the beginning and 133.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 51 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 455 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 298 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 550 IncrementalHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 44 mSDtfsCounter, 550 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=8, InterpolantAutomatonStates: 52, 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, 0.3s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 1499 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:53:07,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bedc991-019b-4dfb-94ec-aace084e5cb2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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