./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:05:50,111 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:05:50,195 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2024-10-31 22:05:50,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:05:50,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:05:50,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:05:50,229 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:05:50,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:05:50,230 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:05:50,231 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:05:50,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:05:50,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:05:50,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:05:50,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:05:50,234 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:05:50,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:05:50,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:05:50,235 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:05:50,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:05:50,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:05:50,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:05:50,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:05:50,240 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:05:50,241 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:05:50,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:05:50,241 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:05:50,242 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:05:50,242 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:05:50,243 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:05:50,243 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:05:50,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:05:50,247 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:05:50,248 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:05:50,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:05:50,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:05:50,249 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:05:50,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:50,250 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:05:50,250 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:05:50,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:05:50,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:05:50,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:05:50,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:05:50,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:05:50,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:05:50,257 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_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2024-10-31 22:05:50,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:05:50,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:05:50,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:05:50,636 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:05:50,637 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:05:50,640 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i Unable to find full path for "g++" [2024-10-31 22:05:53,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:05:53,538 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:05:53,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2024-10-31 22:05:53,563 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/data/adc3f505b/3765b0a6edd84b55934b243dc95884ac/FLAG3fb25f908 [2024-10-31 22:05:53,719 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/data/adc3f505b/3765b0a6edd84b55934b243dc95884ac [2024-10-31 22:05:53,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:05:53,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:05:53,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:53,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:05:53,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:05:53,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:53" (1/1) ... [2024-10-31 22:05:53,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7755f4b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:53, skipping insertion in model container [2024-10-31 22:05:53,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:53" (1/1) ... [2024-10-31 22:05:53,803 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:05:54,391 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:05:54,451 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:05:54,458 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:05:54,463 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:05:54,469 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:05:54,484 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:05:54,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:54,501 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:05:54,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:54,645 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:05:54,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54 WrapperNode [2024-10-31 22:05:54,646 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:54,647 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:54,647 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:05:54,647 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:05:54,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,741 INFO L138 Inliner]: procedures = 176, calls = 180, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 843 [2024-10-31 22:05:54,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:54,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:05:54,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:05:54,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:05:54,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,772 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,832 INFO L175 MemorySlicer]: Split 158 memory accesses to 2 slices as follows [2, 156]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 42 writes are split as follows [0, 42]. [2024-10-31 22:05:54,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,894 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:05:54,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:05:54,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:05:54,943 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:05:54,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:54,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:55,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:05:55,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:05:55,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:05:55,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:05:55,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-31 22:05:55,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-31 22:05:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:05:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:05:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-31 22:05:55,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-31 22:05:55,077 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-31 22:05:55,077 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-31 22:05:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:05:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:05:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 22:05:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 22:05:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 22:05:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 22:05:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:05:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:05:55,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:05:55,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:05:55,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:05:55,317 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:05:55,322 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:05:56,732 INFO L? ?]: Removed 210 outVars from TransFormulas that were not future-live. [2024-10-31 22:05:56,733 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:05:56,751 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:05:56,751 INFO L316 CfgBuilder]: Removed 31 assume(true) statements. [2024-10-31 22:05:56,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:56 BoogieIcfgContainer [2024-10-31 22:05:56,752 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:05:56,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:05:56,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:05:56,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:05:56,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:05:53" (1/3) ... [2024-10-31 22:05:56,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e44fab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:56, skipping insertion in model container [2024-10-31 22:05:56,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (2/3) ... [2024-10-31 22:05:56,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e44fab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:56, skipping insertion in model container [2024-10-31 22:05:56,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:56" (3/3) ... [2024-10-31 22:05:56,763 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-1.i [2024-10-31 22:05:56,783 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:05:56,784 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:05:56,862 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:05:56,870 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@594f5305, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:05:56,871 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:05:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 220 states have (on average 1.6181818181818182) internal successors, (356), 232 states have internal predecessors, (356), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-31 22:05:56,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:05:56,887 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:56,887 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:56,889 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-31 22:05:56,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:56,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2779362, now seen corresponding path program 1 times [2024-10-31 22:05:56,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:56,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491013863] [2024-10-31 22:05:56,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:56,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:57,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:57,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491013863] [2024-10-31 22:05:57,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491013863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:57,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:57,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:57,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812456950] [2024-10-31 22:05:57,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:57,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:05:57,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:57,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:05:57,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:05:57,114 INFO L87 Difference]: Start difference. First operand has 238 states, 220 states have (on average 1.6181818181818182) internal successors, (356), 232 states have internal predecessors, (356), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:57,168 INFO L93 Difference]: Finished difference Result 237 states and 344 transitions. [2024-10-31 22:05:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:05:57,174 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-31 22:05:57,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:57,189 INFO L225 Difference]: With dead ends: 237 [2024-10-31 22:05:57,189 INFO L226 Difference]: Without dead ends: 235 [2024-10-31 22:05:57,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:05:57,198 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:57,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:05:57,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-10-31 22:05:57,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2024-10-31 22:05:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 218 states have (on average 1.4495412844036697) internal successors, (316), 229 states have internal predecessors, (316), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-31 22:05:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 342 transitions. [2024-10-31 22:05:57,283 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 342 transitions. Word has length 7 [2024-10-31 22:05:57,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:57,287 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 342 transitions. [2024-10-31 22:05:57,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:57,288 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 342 transitions. [2024-10-31 22:05:57,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:05:57,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:57,288 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:57,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:05:57,289 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-31 22:05:57,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:57,290 INFO L85 PathProgramCache]: Analyzing trace with hash -676075843, now seen corresponding path program 1 times [2024-10-31 22:05:57,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:57,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015352410] [2024-10-31 22:05:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:57,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:57,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:57,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015352410] [2024-10-31 22:05:57,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015352410] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:57,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:57,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:57,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636136464] [2024-10-31 22:05:57,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:57,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:57,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:57,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:57,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:57,421 INFO L87 Difference]: Start difference. First operand 235 states and 342 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:57,565 INFO L93 Difference]: Finished difference Result 429 states and 623 transitions. [2024-10-31 22:05:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:57,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-31 22:05:57,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:57,574 INFO L225 Difference]: With dead ends: 429 [2024-10-31 22:05:57,574 INFO L226 Difference]: Without dead ends: 429 [2024-10-31 22:05:57,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:57,576 INFO L432 NwaCegarLoop]: 339 mSDtfsCounter, 274 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:57,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 676 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:05:57,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-10-31 22:05:57,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 236. [2024-10-31 22:05:57,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 219 states have (on average 1.447488584474886) internal successors, (317), 230 states have internal predecessors, (317), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-31 22:05:57,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 343 transitions. [2024-10-31 22:05:57,614 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 343 transitions. Word has length 7 [2024-10-31 22:05:57,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:57,615 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 343 transitions. [2024-10-31 22:05:57,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:57,615 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 343 transitions. [2024-10-31 22:05:57,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-31 22:05:57,619 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:57,620 INFO L215 NwaCegarLoop]: 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:57,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:05:57,620 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-31 22:05:57,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:57,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1093924237, now seen corresponding path program 1 times [2024-10-31 22:05:57,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:57,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899228154] [2024-10-31 22:05:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:57,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:58,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:58,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899228154] [2024-10-31 22:05:58,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899228154] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:58,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:58,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:58,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665353898] [2024-10-31 22:05:58,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:58,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:58,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:58,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:58,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:58,297 INFO L87 Difference]: Start difference. First operand 236 states and 343 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) [2024-10-31 22:05:58,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:58,442 INFO L93 Difference]: Finished difference Result 239 states and 339 transitions. [2024-10-31 22:05:58,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:05:58,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) Word has length 82 [2024-10-31 22:05:58,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:58,444 INFO L225 Difference]: With dead ends: 239 [2024-10-31 22:05:58,444 INFO L226 Difference]: Without dead ends: 239 [2024-10-31 22:05:58,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:05:58,446 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 105 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:58,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 849 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:05:58,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-31 22:05:58,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2024-10-31 22:05:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 219 states have (on average 1.4155251141552512) internal successors, (310), 230 states have internal predecessors, (310), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-31 22:05:58,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 336 transitions. [2024-10-31 22:05:58,472 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 336 transitions. Word has length 82 [2024-10-31 22:05:58,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:58,472 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 336 transitions. [2024-10-31 22:05:58,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) [2024-10-31 22:05:58,473 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 336 transitions. [2024-10-31 22:05:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-31 22:05:58,475 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:58,477 INFO L215 NwaCegarLoop]: 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:58,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:05:58,477 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-31 22:05:58,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:58,478 INFO L85 PathProgramCache]: Analyzing trace with hash -846280703, now seen corresponding path program 1 times [2024-10-31 22:05:58,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:58,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362133591] [2024-10-31 22:05:58,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:58,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:58,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:58,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362133591] [2024-10-31 22:05:58,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362133591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:58,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:58,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:58,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209209718] [2024-10-31 22:05:58,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:58,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:58,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:58,795 INFO L87 Difference]: Start difference. First operand 236 states and 336 transitions. 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) [2024-10-31 22:05:58,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:05:58,918 INFO L93 Difference]: Finished difference Result 365 states and 524 transitions. [2024-10-31 22:05:58,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:58,925 INFO L78 Accepts]: Start accepts. 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) Word has length 82 [2024-10-31 22:05:58,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:05:58,932 INFO L225 Difference]: With dead ends: 365 [2024-10-31 22:05:58,932 INFO L226 Difference]: Without dead ends: 365 [2024-10-31 22:05:58,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:58,934 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 134 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:05:58,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 660 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:05:58,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-10-31 22:05:58,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2024-10-31 22:05:58,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 348 states have (on average 1.4310344827586208) internal successors, (498), 359 states have internal predecessors, (498), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-31 22:05:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 524 transitions. [2024-10-31 22:05:58,978 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 524 transitions. Word has length 82 [2024-10-31 22:05:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:05:58,979 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 524 transitions. [2024-10-31 22:05:58,979 INFO L472 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) [2024-10-31 22:05:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 524 transitions. [2024-10-31 22:05:58,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-31 22:05:58,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:05:58,982 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 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, 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] [2024-10-31 22:05:58,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:05:58,983 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-31 22:05:58,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:58,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1711214000, now seen corresponding path program 1 times [2024-10-31 22:05:58,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:58,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456572682] [2024-10-31 22:05:58,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:58,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:59,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:05:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:59,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 22:05:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:05:59,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:59,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456572682] [2024-10-31 22:05:59,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456572682] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:59,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45615789] [2024-10-31 22:05:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:59,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:59,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:59,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:59,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:05:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:59,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:05:59,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:06:00,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:06:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:06:00,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45615789] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:06:00,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:06:00,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-10-31 22:06:00,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435178252] [2024-10-31 22:06:00,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:06:00,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:06:00,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:00,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:06:00,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:06:00,307 INFO L87 Difference]: Start difference. First operand 365 states and 524 transitions. Second operand has 8 states, 8 states have (on average 31.75) internal successors, (254), 7 states have internal predecessors, (254), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-31 22:06:01,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:06:01,318 INFO L93 Difference]: Finished difference Result 819 states and 1170 transitions. [2024-10-31 22:06:01,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:06:01,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.75) internal successors, (254), 7 states have internal predecessors, (254), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 97 [2024-10-31 22:06:01,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:06:01,324 INFO L225 Difference]: With dead ends: 819 [2024-10-31 22:06:01,324 INFO L226 Difference]: Without dead ends: 819 [2024-10-31 22:06:01,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:06:01,325 INFO L432 NwaCegarLoop]: 454 mSDtfsCounter, 1682 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:06:01,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1698 Valid, 1715 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-31 22:06:01,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-10-31 22:06:01,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 816. [2024-10-31 22:06:01,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 790 states have (on average 1.4063291139240506) internal successors, (1111), 801 states have internal predecessors, (1111), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-31 22:06:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1155 transitions. [2024-10-31 22:06:01,351 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1155 transitions. Word has length 97 [2024-10-31 22:06:01,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:06:01,352 INFO L471 AbstractCegarLoop]: Abstraction has 816 states and 1155 transitions. [2024-10-31 22:06:01,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.75) internal successors, (254), 7 states have internal predecessors, (254), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-31 22:06:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1155 transitions. [2024-10-31 22:06:01,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-10-31 22:06:01,365 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:06:01,365 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:01,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:06:01,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:01,571 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-31 22:06:01,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2014651726, now seen corresponding path program 1 times [2024-10-31 22:06:01,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:01,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681277612] [2024-10-31 22:06:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:01,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:02,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:06:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:02,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 22:06:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 4 proven. 162 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-10-31 22:06:02,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:02,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681277612] [2024-10-31 22:06:02,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681277612] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:02,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266689517] [2024-10-31 22:06:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:02,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:02,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:02,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:06:02,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:06:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:03,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:06:03,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:06:04,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:06:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:06:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266689517] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:06:04,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:06:04,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-10-31 22:06:04,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541402097] [2024-10-31 22:06:04,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:06:04,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:06:04,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:04,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:06:04,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:06:04,985 INFO L87 Difference]: Start difference. First operand 816 states and 1155 transitions. Second operand has 15 states, 15 states have (on average 50.93333333333333) internal successors, (764), 14 states have internal predecessors, (764), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-31 22:06:07,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:06:07,266 INFO L93 Difference]: Finished difference Result 1926 states and 2750 transitions. [2024-10-31 22:06:07,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 22:06:07,267 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 50.93333333333333) internal successors, (764), 14 states have internal predecessors, (764), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 322 [2024-10-31 22:06:07,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:06:07,278 INFO L225 Difference]: With dead ends: 1926 [2024-10-31 22:06:07,279 INFO L226 Difference]: Without dead ends: 1926 [2024-10-31 22:06:07,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2024-10-31 22:06:07,280 INFO L432 NwaCegarLoop]: 603 mSDtfsCounter, 6179 mSDsluCounter, 3238 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6189 SdHoareTripleChecker+Valid, 3841 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:06:07,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6189 Valid, 3841 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-31 22:06:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2024-10-31 22:06:07,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1900. [2024-10-31 22:06:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1874 states have (on average 1.4130202774813234) internal successors, (2648), 1885 states have internal predecessors, (2648), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-31 22:06:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2692 transitions. [2024-10-31 22:06:07,323 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2692 transitions. Word has length 322 [2024-10-31 22:06:07,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:06:07,324 INFO L471 AbstractCegarLoop]: Abstraction has 1900 states and 2692 transitions. [2024-10-31 22:06:07,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.93333333333333) internal successors, (764), 14 states have internal predecessors, (764), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-31 22:06:07,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2692 transitions. [2024-10-31 22:06:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2024-10-31 22:06:07,348 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:06:07,349 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:07,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:06:07,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f243795-9a1d-4f71-b28b-079fcda09a8e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:07,550 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-31 22:06:07,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:07,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1263969745, now seen corresponding path program 1 times [2024-10-31 22:06:07,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:07,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019147850] [2024-10-31 22:06:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:07,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms