./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/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_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/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_e2671c5a-3635-47fb-8d73-7eddf0673b57/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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:57:18,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:57:18,128 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:57:18,134 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:57:18,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:57:18,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:57:18,168 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:57:18,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:57:18,170 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:57:18,171 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:57:18,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:57:18,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:57:18,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:57:18,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:57:18,175 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:57:18,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:57:18,177 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:57:18,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:57:18,178 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:57:18,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:57:18,180 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:57:18,181 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:57:18,182 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:57:18,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:57:18,183 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:57:18,184 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:57:18,184 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:57:18,185 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:57:18,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:57:18,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:57:18,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:57:18,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:57:18,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:18,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:57:18,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:57:18,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:57:18,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:57:18,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:57:18,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:57:18,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:57:18,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:57:18,193 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_e2671c5a-3635-47fb-8d73-7eddf0673b57/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2023-11-26 11:57:18,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:57:18,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:57:18,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:57:18,522 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:57:18,523 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:57:18,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2023-11-26 11:57:22,109 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:57:22,546 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:57:22,546 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2023-11-26 11:57:22,570 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/data/a7290b42e/e7d3b29eae7642998518ae9e8e9a322e/FLAGb331668ae [2023-11-26 11:57:22,590 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/data/a7290b42e/e7d3b29eae7642998518ae9e8e9a322e [2023-11-26 11:57:22,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:57:22,596 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:57:22,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:22,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:57:22,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:57:22,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:22" (1/1) ... [2023-11-26 11:57:22,613 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46997a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:22, skipping insertion in model container [2023-11-26 11:57:22,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:22" (1/1) ... [2023-11-26 11:57:22,684 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:57:23,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:23,446 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:57:23,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:23,649 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:57:23,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23 WrapperNode [2023-11-26 11:57:23,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:23,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:23,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:57:23,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:57:23,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23" (1/1) ... [2023-11-26 11:57:23,698 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23" (1/1) ... [2023-11-26 11:57:23,751 INFO L138 Inliner]: procedures = 244, calls = 55, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-11-26 11:57:23,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:23,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:57:23,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:57:23,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:57:23,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23" (1/1) ... [2023-11-26 11:57:23,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23" (1/1) ... [2023-11-26 11:57:23,782 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23" (1/1) ... [2023-11-26 11:57:23,815 INFO L175 MemorySlicer]: Split 31 memory accesses to 7 slices as follows [2, 1, 2, 8, 8, 2, 8]. 26 percent of accesses are in the largest equivalence class. The 27 initializations are split as follows [2, 1, 0, 8, 8, 0, 8]. The 2 writes are split as follows [0, 0, 1, 0, 0, 1, 0]. [2023-11-26 11:57:23,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23" (1/1) ... [2023-11-26 11:57:23,816 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23" (1/1) ... [2023-11-26 11:57:23,833 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23" (1/1) ... [2023-11-26 11:57:23,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23" (1/1) ... [2023-11-26 11:57:23,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23" (1/1) ... [2023-11-26 11:57:23,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23" (1/1) ... [2023-11-26 11:57:23,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:57:23,883 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:57:23,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:57:23,884 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:57:23,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23" (1/1) ... [2023-11-26 11:57:23,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:23,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:23,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:57:23,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:57:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:57:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:57:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 11:57:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 11:57:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 11:57:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 11:57:23,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 11:57:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 11:57:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 11:57:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:57:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:57:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:57:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:57:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:57:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:57:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:57:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:57:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:57:23,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:57:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:57:23,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:57:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:57:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:57:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:57:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:57:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:57:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:57:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:57:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:57:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:57:23,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:57:23,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:57:23,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:57:23,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:57:23,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:57:23,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:57:23,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:57:23,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:57:23,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:57:23,994 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 11:57:24,190 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:57:24,192 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:57:24,619 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:57:24,905 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:57:24,905 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-26 11:57:24,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:24 BoogieIcfgContainer [2023-11-26 11:57:24,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:57:24,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:57:24,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:57:24,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:57:24,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:57:22" (1/3) ... [2023-11-26 11:57:24,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b8624e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:24, skipping insertion in model container [2023-11-26 11:57:24,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:23" (2/3) ... [2023-11-26 11:57:24,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b8624e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:24, skipping insertion in model container [2023-11-26 11:57:24,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:24" (3/3) ... [2023-11-26 11:57:24,916 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-11-26 11:57:24,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:57:24,937 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-26 11:57:24,937 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:57:24,988 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:57:25,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 59 transitions, 132 flow [2023-11-26 11:57:25,069 INFO L124 PetriNetUnfolderBase]: 7/57 cut-off events. [2023-11-26 11:57:25,069 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:57:25,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 57 events. 7/57 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 115 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 35. Up to 3 conditions per place. [2023-11-26 11:57:25,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 59 transitions, 132 flow [2023-11-26 11:57:25,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 56 transitions, 124 flow [2023-11-26 11:57:25,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:57:25,095 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;@b60163a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:57:25,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-26 11:57:25,101 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:57:25,101 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 11:57:25,101 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:57:25,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:25,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:57:25,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:25,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:25,109 INFO L85 PathProgramCache]: Analyzing trace with hash 12217, now seen corresponding path program 1 times [2023-11-26 11:57:25,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:25,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143865714] [2023-11-26 11:57:25,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:25,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:25,527 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 11:57:25,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:25,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143865714] [2023-11-26 11:57:25,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143865714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:25,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:25,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:57:25,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798325270] [2023-11-26 11:57:25,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:25,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:25,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:25,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:25,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:25,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2023-11-26 11:57:25,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:25,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:25,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2023-11-26 11:57:25,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:25,944 INFO L124 PetriNetUnfolderBase]: 503/881 cut-off events. [2023-11-26 11:57:25,944 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-26 11:57:25,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 881 events. 503/881 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4146 event pairs, 346 based on Foata normal form. 2/833 useless extension candidates. Maximal degree in co-relation 1574. Up to 761 conditions per place. [2023-11-26 11:57:25,963 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 27 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-26 11:57:25,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 172 flow [2023-11-26 11:57:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:25,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:57:25,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2023-11-26 11:57:25,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2023-11-26 11:57:25,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 105 transitions. [2023-11-26 11:57:25,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 105 transitions. [2023-11-26 11:57:25,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:25,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 105 transitions. [2023-11-26 11:57:25,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 11:57:25,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:25,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:26,000 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 124 flow. Second operand 3 states and 105 transitions. [2023-11-26 11:57:26,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 172 flow [2023-11-26 11:57:26,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 164 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:57:26,011 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 110 flow [2023-11-26 11:57:26,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2023-11-26 11:57:26,018 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-11-26 11:57:26,018 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 110 flow [2023-11-26 11:57:26,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:26,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:26,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:57:26,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:57:26,019 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:26,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:26,021 INFO L85 PathProgramCache]: Analyzing trace with hash 12218, now seen corresponding path program 1 times [2023-11-26 11:57:26,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:26,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764014670] [2023-11-26 11:57:26,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:26,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:26,241 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 11:57:26,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764014670] [2023-11-26 11:57:26,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764014670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:26,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:26,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:57:26,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982984358] [2023-11-26 11:57:26,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:26,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:26,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:26,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:26,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:26,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2023-11-26 11:57:26,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 11:57:26,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:26,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2023-11-26 11:57:26,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:26,442 INFO L124 PetriNetUnfolderBase]: 309/571 cut-off events. [2023-11-26 11:57:26,443 INFO L125 PetriNetUnfolderBase]: For 10/12 co-relation queries the response was YES. [2023-11-26 11:57:26,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 571 events. 309/571 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2495 event pairs, 207 based on Foata normal form. 76/628 useless extension candidates. Maximal degree in co-relation 1060. Up to 484 conditions per place. [2023-11-26 11:57:26,449 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 25 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-11-26 11:57:26,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 160 flow [2023-11-26 11:57:26,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:57:26,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2023-11-26 11:57:26,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6045197740112994 [2023-11-26 11:57:26,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2023-11-26 11:57:26,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2023-11-26 11:57:26,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:26,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2023-11-26 11:57:26,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 11:57:26,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:26,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:26,460 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 110 flow. Second operand 3 states and 107 transitions. [2023-11-26 11:57:26,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 160 flow [2023-11-26 11:57:26,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:57:26,464 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 106 flow [2023-11-26 11:57:26,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-11-26 11:57:26,465 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-11-26 11:57:26,466 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 106 flow [2023-11-26 11:57:26,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 11:57:26,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:26,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:57:26,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:57:26,467 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:26,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:26,479 INFO L85 PathProgramCache]: Analyzing trace with hash 364332473, now seen corresponding path program 1 times [2023-11-26 11:57:26,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:26,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037536001] [2023-11-26 11:57:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:26,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:26,554 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 11:57:26,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:26,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037536001] [2023-11-26 11:57:26,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037536001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:26,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:26,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:57:26,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726480853] [2023-11-26 11:57:26,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:26,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:26,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:26,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:26,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:26,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2023-11-26 11:57:26,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 11:57:26,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:26,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2023-11-26 11:57:26,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:26,717 INFO L124 PetriNetUnfolderBase]: 332/610 cut-off events. [2023-11-26 11:57:26,717 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-26 11:57:26,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 610 events. 332/610 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2742 event pairs, 224 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 1141. Up to 525 conditions per place. [2023-11-26 11:57:26,724 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 27 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-26 11:57:26,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 160 flow [2023-11-26 11:57:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:26,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:57:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2023-11-26 11:57:26,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819209039548022 [2023-11-26 11:57:26,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 103 transitions. [2023-11-26 11:57:26,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 103 transitions. [2023-11-26 11:57:26,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:26,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 103 transitions. [2023-11-26 11:57:26,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 11:57:26,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:26,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:26,730 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 106 flow. Second operand 3 states and 103 transitions. [2023-11-26 11:57:26,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 160 flow [2023-11-26 11:57:26,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:57:26,733 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 102 flow [2023-11-26 11:57:26,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-11-26 11:57:26,735 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -9 predicate places. [2023-11-26 11:57:26,735 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 102 flow [2023-11-26 11:57:26,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 11:57:26,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:26,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:57:26,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:57:26,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:26,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:26,738 INFO L85 PathProgramCache]: Analyzing trace with hash 364332474, now seen corresponding path program 1 times [2023-11-26 11:57:26,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:26,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641651519] [2023-11-26 11:57:26,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:26,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:26,900 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 11:57:26,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:26,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641651519] [2023-11-26 11:57:26,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641651519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:26,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:26,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:57:26,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90139692] [2023-11-26 11:57:26,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:26,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:26,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:26,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:26,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:26,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2023-11-26 11:57:26,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 102 flow. Second operand has 3 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 11:57:26,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:26,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2023-11-26 11:57:26,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:27,065 INFO L124 PetriNetUnfolderBase]: 309/567 cut-off events. [2023-11-26 11:57:27,065 INFO L125 PetriNetUnfolderBase]: For 10/12 co-relation queries the response was YES. [2023-11-26 11:57:27,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 567 events. 309/567 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2470 event pairs, 207 based on Foata normal form. 15/567 useless extension candidates. Maximal degree in co-relation 1056. Up to 484 conditions per place. [2023-11-26 11:57:27,072 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 25 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-26 11:57:27,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 152 flow [2023-11-26 11:57:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:57:27,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2023-11-26 11:57:27,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6045197740112994 [2023-11-26 11:57:27,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2023-11-26 11:57:27,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2023-11-26 11:57:27,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:27,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2023-11-26 11:57:27,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 11:57:27,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:27,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:27,086 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 102 flow. Second operand 3 states and 107 transitions. [2023-11-26 11:57:27,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 152 flow [2023-11-26 11:57:27,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:57:27,089 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 98 flow [2023-11-26 11:57:27,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-11-26 11:57:27,092 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-11-26 11:57:27,094 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 98 flow [2023-11-26 11:57:27,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 11:57:27,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:27,098 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] [2023-11-26 11:57:27,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:57:27,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:27,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:27,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1814561706, now seen corresponding path program 1 times [2023-11-26 11:57:27,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:27,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173812142] [2023-11-26 11:57:27,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:27,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:27,218 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 11:57:27,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:27,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173812142] [2023-11-26 11:57:27,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173812142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:27,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:27,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:27,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36318830] [2023-11-26 11:57:27,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:27,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:27,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:27,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:27,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:27,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 59 [2023-11-26 11:57:27,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 11:57:27,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:27,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 59 [2023-11-26 11:57:27,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:27,473 INFO L124 PetriNetUnfolderBase]: 539/1002 cut-off events. [2023-11-26 11:57:27,473 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-26 11:57:27,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1862 conditions, 1002 events. 539/1002 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4973 event pairs, 219 based on Foata normal form. 20/1007 useless extension candidates. Maximal degree in co-relation 1852. Up to 496 conditions per place. [2023-11-26 11:57:27,485 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 44 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-26 11:57:27,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 229 flow [2023-11-26 11:57:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:57:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2023-11-26 11:57:27,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7401129943502824 [2023-11-26 11:57:27,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 131 transitions. [2023-11-26 11:57:27,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 131 transitions. [2023-11-26 11:57:27,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:27,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 131 transitions. [2023-11-26 11:57:27,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 11:57:27,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:27,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:27,491 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 98 flow. Second operand 3 states and 131 transitions. [2023-11-26 11:57:27,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 229 flow [2023-11-26 11:57:27,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 64 transitions, 225 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:57:27,495 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 106 flow [2023-11-26 11:57:27,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-11-26 11:57:27,496 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2023-11-26 11:57:27,497 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 106 flow [2023-11-26 11:57:27,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 11:57:27,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:27,498 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, 1, 1, 1] [2023-11-26 11:57:27,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:57:27,498 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:27,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:27,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1715936002, now seen corresponding path program 1 times [2023-11-26 11:57:27,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:27,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073760530] [2023-11-26 11:57:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:27,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:27,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:27,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073760530] [2023-11-26 11:57:27,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073760530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:27,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:27,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:27,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741619102] [2023-11-26 11:57:27,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:27,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:27,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:27,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:27,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:27,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 59 [2023-11-26 11:57:27,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 11:57:27,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:27,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 59 [2023-11-26 11:57:27,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:27,961 INFO L124 PetriNetUnfolderBase]: 940/1698 cut-off events. [2023-11-26 11:57:27,961 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2023-11-26 11:57:27,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3323 conditions, 1698 events. 940/1698 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8969 event pairs, 394 based on Foata normal form. 33/1709 useless extension candidates. Maximal degree in co-relation 1301. Up to 865 conditions per place. [2023-11-26 11:57:27,980 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 45 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-26 11:57:27,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 249 flow [2023-11-26 11:57:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:57:27,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2023-11-26 11:57:27,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7344632768361582 [2023-11-26 11:57:27,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 130 transitions. [2023-11-26 11:57:27,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 130 transitions. [2023-11-26 11:57:27,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:27,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 130 transitions. [2023-11-26 11:57:27,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 11:57:27,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:27,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:27,987 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 106 flow. Second operand 3 states and 130 transitions. [2023-11-26 11:57:27,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 249 flow [2023-11-26 11:57:27,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 65 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:57:27,994 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 116 flow [2023-11-26 11:57:27,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2023-11-26 11:57:27,998 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-11-26 11:57:27,999 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 116 flow [2023-11-26 11:57:27,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 11:57:28,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:28,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:28,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:57:28,001 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:28,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:28,001 INFO L85 PathProgramCache]: Analyzing trace with hash -217206900, now seen corresponding path program 1 times [2023-11-26 11:57:28,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:28,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791571128] [2023-11-26 11:57:28,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:28,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:28,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:28,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791571128] [2023-11-26 11:57:28,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791571128] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:28,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464416136] [2023-11-26 11:57:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:28,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:28,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:28,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:28,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:57:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:28,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:57:28,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:57:28,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:28,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464416136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:28,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:28,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-26 11:57:28,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933143094] [2023-11-26 11:57:28,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:28,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:28,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:28,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:28,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:57:28,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 59 [2023-11-26 11:57:28,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 11:57:28,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:28,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 59 [2023-11-26 11:57:28,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:28,771 INFO L124 PetriNetUnfolderBase]: 942/1712 cut-off events. [2023-11-26 11:57:28,771 INFO L125 PetriNetUnfolderBase]: For 194/195 co-relation queries the response was YES. [2023-11-26 11:57:28,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3475 conditions, 1712 events. 942/1712 cut-off events. For 194/195 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9217 event pairs, 622 based on Foata normal form. 2/1682 useless extension candidates. Maximal degree in co-relation 1341. Up to 1362 conditions per place. [2023-11-26 11:57:28,791 INFO L140 encePairwiseOnDemand]: 57/59 looper letters, 40 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-11-26 11:57:28,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 229 flow [2023-11-26 11:57:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:57:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-26 11:57:28,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6779661016949152 [2023-11-26 11:57:28,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-26 11:57:28,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-26 11:57:28,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:28,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-26 11:57:28,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 11:57:28,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:28,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:28,797 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 116 flow. Second operand 3 states and 120 transitions. [2023-11-26 11:57:28,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 229 flow [2023-11-26 11:57:28,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:57:28,802 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 114 flow [2023-11-26 11:57:28,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-11-26 11:57:28,803 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-11-26 11:57:28,803 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 114 flow [2023-11-26 11:57:28,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 11:57:28,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:28,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:28,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:29,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:57:29,013 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:29,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:29,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1310214923, now seen corresponding path program 1 times [2023-11-26 11:57:29,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:29,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566080842] [2023-11-26 11:57:29,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:29,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:29,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566080842] [2023-11-26 11:57:29,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566080842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:29,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:29,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:29,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106205087] [2023-11-26 11:57:29,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:29,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:29,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:29,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:29,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 59 [2023-11-26 11:57:29,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 11:57:29,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:29,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 59 [2023-11-26 11:57:29,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:29,436 INFO L124 PetriNetUnfolderBase]: 497/1076 cut-off events. [2023-11-26 11:57:29,436 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2023-11-26 11:57:29,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 1076 events. 497/1076 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5549 event pairs, 182 based on Foata normal form. 96/1167 useless extension candidates. Maximal degree in co-relation 1979. Up to 490 conditions per place. [2023-11-26 11:57:29,446 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 33 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2023-11-26 11:57:29,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 240 flow [2023-11-26 11:57:29,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:29,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:57:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2023-11-26 11:57:29,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7062146892655368 [2023-11-26 11:57:29,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2023-11-26 11:57:29,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2023-11-26 11:57:29,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:29,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2023-11-26 11:57:29,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 11:57:29,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:29,451 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 11:57:29,451 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 114 flow. Second operand 3 states and 125 transitions. [2023-11-26 11:57:29,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 240 flow [2023-11-26 11:57:29,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:57:29,455 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 129 flow [2023-11-26 11:57:29,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-26 11:57:29,457 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-11-26 11:57:29,457 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 129 flow [2023-11-26 11:57:29,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 11:57:29,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:29,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:29,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:57:29,458 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:29,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:29,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1985312175, now seen corresponding path program 2 times [2023-11-26 11:57:29,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:29,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448847155] [2023-11-26 11:57:29,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:29,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:29,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:29,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448847155] [2023-11-26 11:57:29,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448847155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:29,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199570831] [2023-11-26 11:57:29,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:57:29,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:29,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:29,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:29,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:57:29,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:57:29,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:57:29,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:57:29,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:57:31,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:31,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199570831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:31,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:31,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-26 11:57:31,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122102586] [2023-11-26 11:57:31,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:31,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:31,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:31,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:31,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2023-11-26 11:57:31,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2023-11-26 11:57:31,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 11:57:31,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:31,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2023-11-26 11:57:31,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:32,133 INFO L124 PetriNetUnfolderBase]: 555/1179 cut-off events. [2023-11-26 11:57:32,134 INFO L125 PetriNetUnfolderBase]: For 361/361 co-relation queries the response was YES. [2023-11-26 11:57:32,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2751 conditions, 1179 events. 555/1179 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6294 event pairs, 400 based on Foata normal form. 1/1158 useless extension candidates. Maximal degree in co-relation 962. Up to 957 conditions per place. [2023-11-26 11:57:32,146 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 28 selfloop transitions, 1 changer transitions 2/45 dead transitions. [2023-11-26 11:57:32,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 187 flow [2023-11-26 11:57:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:57:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:57:32,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2023-11-26 11:57:32,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4957627118644068 [2023-11-26 11:57:32,149 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 117 transitions. [2023-11-26 11:57:32,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 117 transitions. [2023-11-26 11:57:32,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:32,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 117 transitions. [2023-11-26 11:57:32,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 11:57:32,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:32,152 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:32,152 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 129 flow. Second operand 4 states and 117 transitions. [2023-11-26 11:57:32,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 187 flow [2023-11-26 11:57:32,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:57:32,161 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 117 flow [2023-11-26 11:57:32,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-11-26 11:57:32,163 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-11-26 11:57:32,164 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 117 flow [2023-11-26 11:57:32,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 11:57:32,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:32,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:32,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:32,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-26 11:57:32,373 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:32,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:32,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1675228281, now seen corresponding path program 1 times [2023-11-26 11:57:32,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:32,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886067260] [2023-11-26 11:57:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:32,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:32,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:32,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886067260] [2023-11-26 11:57:32,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886067260] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:32,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520817219] [2023-11-26 11:57:32,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:32,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:32,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:32,522 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:32,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:57:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:32,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:57:32,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:32,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:32,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520817219] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:32,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:57:32,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-26 11:57:32,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140858253] [2023-11-26 11:57:32,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:32,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:57:32,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:32,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:57:32,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:32,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 59 [2023-11-26 11:57:32,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 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 11:57:32,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:32,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 59 [2023-11-26 11:57:32,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:33,347 INFO L124 PetriNetUnfolderBase]: 1200/2352 cut-off events. [2023-11-26 11:57:33,348 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2023-11-26 11:57:33,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5271 conditions, 2352 events. 1200/2352 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12630 event pairs, 118 based on Foata normal form. 102/2440 useless extension candidates. Maximal degree in co-relation 5262. Up to 469 conditions per place. [2023-11-26 11:57:33,370 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 99 selfloop transitions, 6 changer transitions 0/119 dead transitions. [2023-11-26 11:57:33,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 119 transitions, 551 flow [2023-11-26 11:57:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:33,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:57:33,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2023-11-26 11:57:33,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.748587570621469 [2023-11-26 11:57:33,373 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 265 transitions. [2023-11-26 11:57:33,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 265 transitions. [2023-11-26 11:57:33,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:33,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 265 transitions. [2023-11-26 11:57:33,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 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 11:57:33,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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 11:57:33,377 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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 11:57:33,377 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 117 flow. Second operand 6 states and 265 transitions. [2023-11-26 11:57:33,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 119 transitions, 551 flow [2023-11-26 11:57:33,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 119 transitions, 550 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:57:33,381 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 156 flow [2023-11-26 11:57:33,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-11-26 11:57:33,382 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-11-26 11:57:33,382 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 156 flow [2023-11-26 11:57:33,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 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 11:57:33,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:33,383 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 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 11:57:33,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:33,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:33,590 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:33,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1387627369, now seen corresponding path program 2 times [2023-11-26 11:57:33,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:33,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844591941] [2023-11-26 11:57:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:33,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-26 11:57:33,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:33,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844591941] [2023-11-26 11:57:33,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844591941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:33,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981157025] [2023-11-26 11:57:33,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:57:33,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:33,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:33,690 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:33,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:57:33,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:57:33,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:57:33,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:57:33,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-26 11:57:33,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:33,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981157025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:33,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:33,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-26 11:57:33,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282770490] [2023-11-26 11:57:33,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:33,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:33,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:33,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:33,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:57:33,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2023-11-26 11:57:33,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 11:57:33,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:33,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2023-11-26 11:57:33,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:34,255 INFO L124 PetriNetUnfolderBase]: 1054/2143 cut-off events. [2023-11-26 11:57:34,255 INFO L125 PetriNetUnfolderBase]: For 1314/1314 co-relation queries the response was YES. [2023-11-26 11:57:34,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5290 conditions, 2143 events. 1054/2143 cut-off events. For 1314/1314 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10314 event pairs, 302 based on Foata normal form. 0/2040 useless extension candidates. Maximal degree in co-relation 5278. Up to 1011 conditions per place. [2023-11-26 11:57:34,275 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 51 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-11-26 11:57:34,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 359 flow [2023-11-26 11:57:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:57:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:57:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2023-11-26 11:57:34,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6483050847457628 [2023-11-26 11:57:34,278 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 153 transitions. [2023-11-26 11:57:34,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 153 transitions. [2023-11-26 11:57:34,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:34,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 153 transitions. [2023-11-26 11:57:34,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 11:57:34,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:34,281 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:34,281 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 156 flow. Second operand 4 states and 153 transitions. [2023-11-26 11:57:34,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 359 flow [2023-11-26 11:57:34,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 344 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-26 11:57:34,290 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 173 flow [2023-11-26 11:57:34,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2023-11-26 11:57:34,291 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-11-26 11:57:34,292 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 173 flow [2023-11-26 11:57:34,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 11:57:34,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:34,292 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:34,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:34,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:34,502 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:34,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:34,502 INFO L85 PathProgramCache]: Analyzing trace with hash -128449629, now seen corresponding path program 3 times [2023-11-26 11:57:34,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:34,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773420393] [2023-11-26 11:57:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:34,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:34,713 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:34,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:34,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773420393] [2023-11-26 11:57:34,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773420393] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:34,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156952388] [2023-11-26 11:57:34,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:57:34,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:34,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:34,716 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:34,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:57:35,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-26 11:57:35,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:57:35,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:57:35,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:35,147 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:35,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:35,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156952388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:35,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:57:35,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2023-11-26 11:57:35,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441689513] [2023-11-26 11:57:35,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:35,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:57:35,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:35,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:57:35,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:35,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 59 [2023-11-26 11:57:35,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 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 11:57:35,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:35,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 59 [2023-11-26 11:57:35,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:36,273 INFO L124 PetriNetUnfolderBase]: 2223/4490 cut-off events. [2023-11-26 11:57:36,273 INFO L125 PetriNetUnfolderBase]: For 2526/2526 co-relation queries the response was YES. [2023-11-26 11:57:36,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11128 conditions, 4490 events. 2223/4490 cut-off events. For 2526/2526 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 26743 event pairs, 271 based on Foata normal form. 247/4730 useless extension candidates. Maximal degree in co-relation 11112. Up to 1327 conditions per place. [2023-11-26 11:57:36,324 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 102 selfloop transitions, 6 changer transitions 0/124 dead transitions. [2023-11-26 11:57:36,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 124 transitions, 693 flow [2023-11-26 11:57:36,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:57:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 257 transitions. [2023-11-26 11:57:36,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7259887005649718 [2023-11-26 11:57:36,327 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 257 transitions. [2023-11-26 11:57:36,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 257 transitions. [2023-11-26 11:57:36,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:36,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 257 transitions. [2023-11-26 11:57:36,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 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 11:57:36,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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 11:57:36,331 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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 11:57:36,332 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 173 flow. Second operand 6 states and 257 transitions. [2023-11-26 11:57:36,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 124 transitions, 693 flow [2023-11-26 11:57:36,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 124 transitions, 692 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:57:36,344 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 212 flow [2023-11-26 11:57:36,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2023-11-26 11:57:36,345 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2023-11-26 11:57:36,346 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 212 flow [2023-11-26 11:57:36,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 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 11:57:36,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:36,347 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:36,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:36,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:36,556 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:36,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:36,557 INFO L85 PathProgramCache]: Analyzing trace with hash -720532945, now seen corresponding path program 4 times [2023-11-26 11:57:36,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:36,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203034043] [2023-11-26 11:57:36,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:36,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 46 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:57:36,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:36,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203034043] [2023-11-26 11:57:36,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203034043] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:36,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086382433] [2023-11-26 11:57:36,990 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 11:57:36,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:36,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:36,992 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:37,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:57:37,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 11:57:37,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:57:37,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 11:57:37,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-26 11:57:37,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-26 11:57:37,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086382433] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:37,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:57:37,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2023-11-26 11:57:37,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679912041] [2023-11-26 11:57:37,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:37,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:37,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:37,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:37,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:37,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2023-11-26 11:57:37,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 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 11:57:37,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:37,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2023-11-26 11:57:37,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:37,880 INFO L124 PetriNetUnfolderBase]: 648/1461 cut-off events. [2023-11-26 11:57:37,881 INFO L125 PetriNetUnfolderBase]: For 1716/1716 co-relation queries the response was YES. [2023-11-26 11:57:37,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 1461 events. 648/1461 cut-off events. For 1716/1716 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6441 event pairs, 198 based on Foata normal form. 0/1455 useless extension candidates. Maximal degree in co-relation 4054. Up to 640 conditions per place. [2023-11-26 11:57:37,893 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 54 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2023-11-26 11:57:37,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 430 flow [2023-11-26 11:57:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:57:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:57:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2023-11-26 11:57:37,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6398305084745762 [2023-11-26 11:57:37,895 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 151 transitions. [2023-11-26 11:57:37,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 151 transitions. [2023-11-26 11:57:37,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:37,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 151 transitions. [2023-11-26 11:57:37,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 11:57:37,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:37,898 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:37,898 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 212 flow. Second operand 4 states and 151 transitions. [2023-11-26 11:57:37,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 430 flow [2023-11-26 11:57:37,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 414 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-26 11:57:37,904 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 200 flow [2023-11-26 11:57:37,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2023-11-26 11:57:37,905 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-11-26 11:57:37,905 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 200 flow [2023-11-26 11:57:37,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 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 11:57:37,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:37,906 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:37,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-26 11:57:38,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:38,119 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-26 11:57:38,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:38,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1005118969, now seen corresponding path program 5 times [2023-11-26 11:57:38,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:38,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185991051] [2023-11-26 11:57:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:38,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:38,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:38,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185991051] [2023-11-26 11:57:38,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185991051] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:38,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145939475] [2023-11-26 11:57:38,995 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-26 11:57:38,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:38,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:38,997 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:39,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:57:39,259 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-26 11:57:39,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:57:39,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-26 11:57:39,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:39,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:40,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145939475] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:40,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:57:40,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 30 [2023-11-26 11:57:40,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939493308] [2023-11-26 11:57:40,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:40,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-26 11:57:40,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-26 11:57:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2023-11-26 11:57:40,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2023-11-26 11:57:40,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 200 flow. Second operand has 31 states, 31 states have (on average 30.129032258064516) internal successors, (934), 31 states have internal predecessors, (934), 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 11:57:40,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:40,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2023-11-26 11:57:40,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:42,002 INFO L124 PetriNetUnfolderBase]: 704/1514 cut-off events. [2023-11-26 11:57:42,003 INFO L125 PetriNetUnfolderBase]: For 1531/1531 co-relation queries the response was YES. [2023-11-26 11:57:42,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4191 conditions, 1514 events. 704/1514 cut-off events. For 1531/1531 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6605 event pairs, 51 based on Foata normal form. 34/1546 useless extension candidates. Maximal degree in co-relation 4170. Up to 290 conditions per place. [2023-11-26 11:57:42,012 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 0 selfloop transitions, 0 changer transitions 150/150 dead transitions. [2023-11-26 11:57:42,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 150 transitions, 886 flow [2023-11-26 11:57:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:57:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 11:57:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 445 transitions. [2023-11-26 11:57:42,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285310734463276 [2023-11-26 11:57:42,015 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 445 transitions. [2023-11-26 11:57:42,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 445 transitions. [2023-11-26 11:57:42,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:42,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 445 transitions. [2023-11-26 11:57:42,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 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 11:57:42,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 59.0) internal successors, (767), 13 states have internal predecessors, (767), 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 11:57:42,020 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 59.0) internal successors, (767), 13 states have internal predecessors, (767), 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 11:57:42,020 INFO L175 Difference]: Start difference. First operand has 70 places, 49 transitions, 200 flow. Second operand 12 states and 445 transitions. [2023-11-26 11:57:42,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 150 transitions, 886 flow [2023-11-26 11:57:42,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 150 transitions, 854 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:57:42,028 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2023-11-26 11:57:42,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2023-11-26 11:57:42,029 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-11-26 11:57:42,029 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2023-11-26 11:57:42,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 30.129032258064516) internal successors, (934), 31 states have internal predecessors, (934), 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 11:57:42,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-26 11:57:42,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-26 11:57:42,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-26 11:57:42,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-26 11:57:42,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-26 11:57:42,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-26 11:57:42,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-26 11:57:42,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-26 11:57:42,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-26 11:57:42,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-26 11:57:42,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-26 11:57:42,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-26 11:57:42,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:42,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 11:57:42,248 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:42,255 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:57:42,256 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:57:42,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:57:42 BasicIcfg [2023-11-26 11:57:42,265 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:57:42,266 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:57:42,266 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:57:42,267 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:57:42,267 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:24" (3/4) ... [2023-11-26 11:57:42,270 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:57:42,274 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-26 11:57:42,274 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-26 11:57:42,285 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 69 nodes and edges [2023-11-26 11:57:42,286 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-26 11:57:42,286 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-26 11:57:42,287 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 11:57:42,423 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:57:42,424 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:57:42,424 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:57:42,425 INFO L158 Benchmark]: Toolchain (without parser) took 19829.31ms. Allocated memory was 174.1MB in the beginning and 339.7MB in the end (delta: 165.7MB). Free memory was 125.9MB in the beginning and 230.9MB in the end (delta: -105.0MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2023-11-26 11:57:42,425 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 174.1MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:57:42,426 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1052.84ms. Allocated memory is still 174.1MB. Free memory was 125.7MB in the beginning and 98.7MB in the end (delta: 26.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-26 11:57:42,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.66ms. Allocated memory is still 174.1MB. Free memory was 98.7MB in the beginning and 96.3MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:57:42,427 INFO L158 Benchmark]: Boogie Preprocessor took 129.52ms. Allocated memory is still 174.1MB. Free memory was 96.3MB in the beginning and 93.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:57:42,427 INFO L158 Benchmark]: RCFGBuilder took 1022.85ms. Allocated memory was 174.1MB in the beginning and 234.9MB in the end (delta: 60.8MB). Free memory was 92.8MB in the beginning and 165.8MB in the end (delta: -73.0MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2023-11-26 11:57:42,428 INFO L158 Benchmark]: TraceAbstraction took 17356.72ms. Allocated memory was 234.9MB in the beginning and 339.7MB in the end (delta: 104.9MB). Free memory was 165.8MB in the beginning and 235.9MB in the end (delta: -70.1MB). Peak memory consumption was 170.8MB. Max. memory is 16.1GB. [2023-11-26 11:57:42,429 INFO L158 Benchmark]: Witness Printer took 158.15ms. Allocated memory is still 339.7MB. Free memory was 235.9MB in the beginning and 230.9MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:57:42,436 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 174.1MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1052.84ms. Allocated memory is still 174.1MB. Free memory was 125.7MB in the beginning and 98.7MB in the end (delta: 26.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.66ms. Allocated memory is still 174.1MB. Free memory was 98.7MB in the beginning and 96.3MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 129.52ms. Allocated memory is still 174.1MB. Free memory was 96.3MB in the beginning and 93.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1022.85ms. Allocated memory was 174.1MB in the beginning and 234.9MB in the end (delta: 60.8MB). Free memory was 92.8MB in the beginning and 165.8MB in the end (delta: -73.0MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. * TraceAbstraction took 17356.72ms. Allocated memory was 234.9MB in the beginning and 339.7MB in the end (delta: 104.9MB). Free memory was 165.8MB in the beginning and 235.9MB in the end (delta: -70.1MB). Peak memory consumption was 170.8MB. Max. memory is 16.1GB. * Witness Printer took 158.15ms. Allocated memory is still 339.7MB. Free memory was 235.9MB in the beginning and 230.9MB in the end (delta: 4.9MB). 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: 906]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: 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 5 procedures, 77 locations, 12 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: 17.2s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 24 mSolverCounterUnknown, 707 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 597 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3630 IncrementalHoareTripleChecker+Invalid, 3680 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 35 mSDtfsCounter, 3630 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 627 GetRequests, 562 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred in iteration=12, InterpolantAutomatonStates: 60, 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: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 793 NumberOfCodeBlocks, 780 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1002 ConstructedInterpolants, 32 QuantifiedInterpolants, 5031 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2381 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 25 InterpolantComputations, 10 PerfectInterpolantSequences, 352/762 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:57:42,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2671c5a-3635-47fb-8d73-7eddf0673b57/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